./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 10c341169e851beaa907d6b4c856b8c9335bdf02c819f534595f4ceb4010e354 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:14:07,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:14:07,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 18:14:07,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:14:07,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:14:07,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:14:07,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:14:07,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:14:07,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:14:07,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:14:07,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:14:07,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:14:07,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:14:07,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:14:07,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:14:07,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:14:07,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:14:07,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:14:07,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:14:07,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:14:07,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:14:07,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:14:07,093 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:14:07,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:14:07,094 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:14:07,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:14:07,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:14:07,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:14:07,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:14:07,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:14:07,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:14:07,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:14:07,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:14:07,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c341169e851beaa907d6b4c856b8c9335bdf02c819f534595f4ceb4010e354 [2024-11-18 18:14:07,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:14:07,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:14:07,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:14:07,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:14:07,358 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:14:07,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2024-11-18 18:14:08,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:14:08,720 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:14:08,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2024-11-18 18:14:08,731 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f124c2f78/35fa7f73b2aa4c04a1decf11ca090da0/FLAG0a8f37f20 [2024-11-18 18:14:09,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f124c2f78/35fa7f73b2aa4c04a1decf11ca090da0 [2024-11-18 18:14:09,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:14:09,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:14:09,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:14:09,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:14:09,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:14:09,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a44364b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09, skipping insertion in model container [2024-11-18 18:14:09,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:14:09,296 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1266,1279] [2024-11-18 18:14:09,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:14:09,415 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:14:09,424 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1266,1279] [2024-11-18 18:14:09,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:14:09,510 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:14:09,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09 WrapperNode [2024-11-18 18:14:09,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:14:09,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:14:09,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:14:09,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:14:09,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,604 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 748 [2024-11-18 18:14:09,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:14:09,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:14:09,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:14:09,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:14:09,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,657 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 18:14:09,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:14:09,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:14:09,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:14:09,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:14:09,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (1/1) ... [2024-11-18 18:14:09,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:14:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:09,746 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 18:14:09,749 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 18:14:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:14:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:14:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:14:09,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:14:09,932 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:14:09,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:14:10,520 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-11-18 18:14:10,520 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:14:10,533 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:14:10,535 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:14:10,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:14:10 BoogieIcfgContainer [2024-11-18 18:14:10,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:14:10,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:14:10,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:14:10,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:14:10,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:14:09" (1/3) ... [2024-11-18 18:14:10,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49113d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:14:10, skipping insertion in model container [2024-11-18 18:14:10,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:14:09" (2/3) ... [2024-11-18 18:14:10,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49113d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:14:10, skipping insertion in model container [2024-11-18 18:14:10,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:14:10" (3/3) ... [2024-11-18 18:14:10,543 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2024-11-18 18:14:10,557 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:14:10,558 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:14:10,608 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:14:10,613 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;@4305671e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:14:10,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:14:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 18:14:10,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:10,625 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] [2024-11-18 18:14:10,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:10,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash 387884158, now seen corresponding path program 1 times [2024-11-18 18:14:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609275573] [2024-11-18 18:14:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:10,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:11,261 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 18:14:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609275573] [2024-11-18 18:14:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609275573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:14:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590863661] [2024-11-18 18:14:11,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:11,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:14:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:14:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:14:11,292 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:11,338 INFO L93 Difference]: Finished difference Result 229 states and 339 transitions. [2024-11-18 18:14:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:14:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-18 18:14:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:11,346 INFO L225 Difference]: With dead ends: 229 [2024-11-18 18:14:11,346 INFO L226 Difference]: Without dead ends: 141 [2024-11-18 18:14:11,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:14:11,350 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:11,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:14:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-18 18:14:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-18 18:14:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2024-11-18 18:14:11,382 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 41 [2024-11-18 18:14:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:11,382 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2024-11-18 18:14:11,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2024-11-18 18:14:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 18:14:11,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:11,384 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] [2024-11-18 18:14:11,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:14:11,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:11,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:11,385 INFO L85 PathProgramCache]: Analyzing trace with hash -858797603, now seen corresponding path program 1 times [2024-11-18 18:14:11,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:11,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31280991] [2024-11-18 18:14:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:11,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:11,533 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 18:14:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31280991] [2024-11-18 18:14:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31280991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:11,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:11,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:14:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223832100] [2024-11-18 18:14:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:11,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:14:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:14:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:14:11,539 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:11,572 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-18 18:14:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:14:11,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 18:14:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:11,576 INFO L225 Difference]: With dead ends: 230 [2024-11-18 18:14:11,576 INFO L226 Difference]: Without dead ends: 143 [2024-11-18 18:14:11,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:14:11,577 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:11,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:14:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-18 18:14:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-18 18:14:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.471830985915493) internal successors, (209), 142 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2024-11-18 18:14:11,593 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 42 [2024-11-18 18:14:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:11,594 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2024-11-18 18:14:11,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2024-11-18 18:14:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 18:14:11,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:11,595 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] [2024-11-18 18:14:11,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:14:11,596 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:11,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1950887625, now seen corresponding path program 1 times [2024-11-18 18:14:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317224399] [2024-11-18 18:14:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:11,916 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 18:14:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317224399] [2024-11-18 18:14:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317224399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:11,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:11,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:14:11,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578537491] [2024-11-18 18:14:11,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:11,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:14:11,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:14:11,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:14:11,918 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:11,951 INFO L93 Difference]: Finished difference Result 232 states and 338 transitions. [2024-11-18 18:14:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:14:11,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-18 18:14:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:11,953 INFO L225 Difference]: With dead ends: 232 [2024-11-18 18:14:11,953 INFO L226 Difference]: Without dead ends: 143 [2024-11-18 18:14:11,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:14:11,954 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 6 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:11,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 587 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:14:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-18 18:14:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-18 18:14:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4647887323943662) internal successors, (208), 142 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 208 transitions. [2024-11-18 18:14:11,962 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 208 transitions. Word has length 43 [2024-11-18 18:14:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:11,962 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 208 transitions. [2024-11-18 18:14:11,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 208 transitions. [2024-11-18 18:14:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 18:14:11,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:11,963 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] [2024-11-18 18:14:11,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:14:11,967 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:11,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:11,968 INFO L85 PathProgramCache]: Analyzing trace with hash 560912804, now seen corresponding path program 1 times [2024-11-18 18:14:11,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213888865] [2024-11-18 18:14:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:11,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:12,265 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 18:14:12,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:12,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213888865] [2024-11-18 18:14:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213888865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:12,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:14:12,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152973888] [2024-11-18 18:14:12,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:12,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:14:12,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:14:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:14:12,267 INFO L87 Difference]: Start difference. First operand 143 states and 208 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:12,354 INFO L93 Difference]: Finished difference Result 242 states and 350 transitions. [2024-11-18 18:14:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:14:12,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-18 18:14:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:12,356 INFO L225 Difference]: With dead ends: 242 [2024-11-18 18:14:12,356 INFO L226 Difference]: Without dead ends: 153 [2024-11-18 18:14:12,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:14:12,359 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 192 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:12,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1162 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:14:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-18 18:14:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2024-11-18 18:14:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 151 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 220 transitions. [2024-11-18 18:14:12,366 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 220 transitions. Word has length 44 [2024-11-18 18:14:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:12,366 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 220 transitions. [2024-11-18 18:14:12,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 220 transitions. [2024-11-18 18:14:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 18:14:12,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:12,367 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] [2024-11-18 18:14:12,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:14:12,368 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:12,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:12,368 INFO L85 PathProgramCache]: Analyzing trace with hash 527774260, now seen corresponding path program 1 times [2024-11-18 18:14:12,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:12,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924517887] [2024-11-18 18:14:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:12,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:12,765 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 18:14:12,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:12,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924517887] [2024-11-18 18:14:12,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924517887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:12,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:12,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:14:12,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434061445] [2024-11-18 18:14:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:12,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:14:12,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:14:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:14:12,769 INFO L87 Difference]: Start difference. First operand 152 states and 220 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:12,953 INFO L93 Difference]: Finished difference Result 255 states and 367 transitions. [2024-11-18 18:14:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:14:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-18 18:14:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:12,955 INFO L225 Difference]: With dead ends: 255 [2024-11-18 18:14:12,955 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 18:14:12,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:14:12,958 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 195 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:12,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1253 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:14:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 18:14:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-18 18:14:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4516129032258065) internal successors, (225), 155 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2024-11-18 18:14:12,966 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 45 [2024-11-18 18:14:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:12,967 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2024-11-18 18:14:12,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2024-11-18 18:14:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 18:14:12,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:12,968 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] [2024-11-18 18:14:12,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:14:12,968 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:12,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1053569225, now seen corresponding path program 1 times [2024-11-18 18:14:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:12,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358976176] [2024-11-18 18:14:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:13,131 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 18:14:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358976176] [2024-11-18 18:14:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358976176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:13,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:13,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:14:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051744058] [2024-11-18 18:14:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:13,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:14:13,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:14:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:14:13,132 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:13,319 INFO L93 Difference]: Finished difference Result 299 states and 424 transitions. [2024-11-18 18:14:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:14:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-18 18:14:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:13,320 INFO L225 Difference]: With dead ends: 299 [2024-11-18 18:14:13,320 INFO L226 Difference]: Without dead ends: 197 [2024-11-18 18:14:13,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:14:13,321 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 270 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:13,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 634 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:14:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-18 18:14:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 158. [2024-11-18 18:14:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4458598726114649) internal successors, (227), 157 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 227 transitions. [2024-11-18 18:14:13,329 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 227 transitions. Word has length 45 [2024-11-18 18:14:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:13,329 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 227 transitions. [2024-11-18 18:14:13,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 227 transitions. [2024-11-18 18:14:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 18:14:13,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:13,334 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] [2024-11-18 18:14:13,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:14:13,334 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:13,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash 745678211, now seen corresponding path program 1 times [2024-11-18 18:14:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104023112] [2024-11-18 18:14:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:13,534 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 18:14:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104023112] [2024-11-18 18:14:13,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104023112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:13,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:13,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:14:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705269864] [2024-11-18 18:14:13,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:13,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:14:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:14:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:14:13,537 INFO L87 Difference]: Start difference. First operand 158 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:13,567 INFO L93 Difference]: Finished difference Result 266 states and 380 transitions. [2024-11-18 18:14:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:14:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 18:14:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:13,569 INFO L225 Difference]: With dead ends: 266 [2024-11-18 18:14:13,569 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 18:14:13,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:14:13,571 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 175 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:13,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 589 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:14:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 18:14:13,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-18 18:14:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4294478527607362) internal successors, (233), 163 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 233 transitions. [2024-11-18 18:14:13,596 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 233 transitions. Word has length 46 [2024-11-18 18:14:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:13,596 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 233 transitions. [2024-11-18 18:14:13,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 233 transitions. [2024-11-18 18:14:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 18:14:13,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:13,597 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] [2024-11-18 18:14:13,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:14:13,597 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:13,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1691991601, now seen corresponding path program 1 times [2024-11-18 18:14:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232468142] [2024-11-18 18:14:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:13,771 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 18:14:13,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:13,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232468142] [2024-11-18 18:14:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232468142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:13,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:14:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480048375] [2024-11-18 18:14:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:13,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:14:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:14:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:14:13,776 INFO L87 Difference]: Start difference. First operand 164 states and 233 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:13,957 INFO L93 Difference]: Finished difference Result 284 states and 397 transitions. [2024-11-18 18:14:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:14:13,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-18 18:14:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:13,959 INFO L225 Difference]: With dead ends: 284 [2024-11-18 18:14:13,959 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 18:14:13,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:14:13,960 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 202 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:13,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 630 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:14:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 18:14:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2024-11-18 18:14:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.4242424242424243) internal successors, (235), 165 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2024-11-18 18:14:13,965 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 47 [2024-11-18 18:14:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:13,965 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2024-11-18 18:14:13,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2024-11-18 18:14:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 18:14:13,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:13,966 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:13,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 18:14:13,966 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:13,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash -19459059, now seen corresponding path program 1 times [2024-11-18 18:14:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187111252] [2024-11-18 18:14:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:14,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:14,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187111252] [2024-11-18 18:14:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187111252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415158211] [2024-11-18 18:14:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:14,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:14,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:14,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:14,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 18:14:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:15,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-18 18:14:15,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:15,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:14:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415158211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:14:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-18 18:14:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748971087] [2024-11-18 18:14:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:15,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:14:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:14:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:14:15,369 INFO L87 Difference]: Start difference. First operand 166 states and 235 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:15,675 INFO L93 Difference]: Finished difference Result 287 states and 401 transitions. [2024-11-18 18:14:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:14:15,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-18 18:14:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:15,680 INFO L225 Difference]: With dead ends: 287 [2024-11-18 18:14:15,680 INFO L226 Difference]: Without dead ends: 179 [2024-11-18 18:14:15,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:14:15,681 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 196 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:15,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 162 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:14:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-18 18:14:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2024-11-18 18:14:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.3954802259887005) internal successors, (247), 177 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 247 transitions. [2024-11-18 18:14:15,686 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 247 transitions. Word has length 89 [2024-11-18 18:14:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:15,686 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 247 transitions. [2024-11-18 18:14:15,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 247 transitions. [2024-11-18 18:14:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 18:14:15,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:15,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:15,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 18:14:15,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:15,888 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:15,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1705407056, now seen corresponding path program 1 times [2024-11-18 18:14:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644606057] [2024-11-18 18:14:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644606057] [2024-11-18 18:14:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644606057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:14:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650094945] [2024-11-18 18:14:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:16,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:14:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:14:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:14:16,611 INFO L87 Difference]: Start difference. First operand 178 states and 247 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:16,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:16,910 INFO L93 Difference]: Finished difference Result 324 states and 454 transitions. [2024-11-18 18:14:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:14:16,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-18 18:14:16,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:16,912 INFO L225 Difference]: With dead ends: 324 [2024-11-18 18:14:16,912 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 18:14:16,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:14:16,912 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 300 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:16,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 446 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:14:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 18:14:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 189. [2024-11-18 18:14:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.3936170212765957) internal successors, (262), 188 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 262 transitions. [2024-11-18 18:14:16,916 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 262 transitions. Word has length 91 [2024-11-18 18:14:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:16,916 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 262 transitions. [2024-11-18 18:14:16,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 262 transitions. [2024-11-18 18:14:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-18 18:14:16,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:16,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:16,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:14:16,917 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:16,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1779479355, now seen corresponding path program 1 times [2024-11-18 18:14:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810537540] [2024-11-18 18:14:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810537540] [2024-11-18 18:14:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810537540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:14:17,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983856685] [2024-11-18 18:14:17,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:17,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:14:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:14:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:14:17,523 INFO L87 Difference]: Start difference. First operand 189 states and 262 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:17,757 INFO L93 Difference]: Finished difference Result 340 states and 477 transitions. [2024-11-18 18:14:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:14:17,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-18 18:14:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:17,758 INFO L225 Difference]: With dead ends: 340 [2024-11-18 18:14:17,758 INFO L226 Difference]: Without dead ends: 232 [2024-11-18 18:14:17,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:14:17,759 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 396 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:17,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 391 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:14:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-18 18:14:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 209. [2024-11-18 18:14:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3990384615384615) internal successors, (291), 208 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2024-11-18 18:14:17,763 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 92 [2024-11-18 18:14:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:17,763 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2024-11-18 18:14:17,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2024-11-18 18:14:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 18:14:17,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:17,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:17,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:14:17,764 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:17,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2142078003, now seen corresponding path program 1 times [2024-11-18 18:14:17,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:17,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778836098] [2024-11-18 18:14:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778836098] [2024-11-18 18:14:18,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778836098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:18,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:18,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:14:18,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470712188] [2024-11-18 18:14:18,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:18,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:14:18,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:18,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:14:18,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:14:18,605 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:19,231 INFO L93 Difference]: Finished difference Result 438 states and 613 transitions. [2024-11-18 18:14:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:14:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-18 18:14:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:19,233 INFO L225 Difference]: With dead ends: 438 [2024-11-18 18:14:19,233 INFO L226 Difference]: Without dead ends: 330 [2024-11-18 18:14:19,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:14:19,233 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 280 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:19,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 540 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:14:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-18 18:14:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 292. [2024-11-18 18:14:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.4123711340206186) internal successors, (411), 291 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 411 transitions. [2024-11-18 18:14:19,241 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 411 transitions. Word has length 93 [2024-11-18 18:14:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:19,241 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 411 transitions. [2024-11-18 18:14:19,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 411 transitions. [2024-11-18 18:14:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 18:14:19,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:19,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:19,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 18:14:19,243 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:19,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1200865215, now seen corresponding path program 1 times [2024-11-18 18:14:19,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:19,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518718257] [2024-11-18 18:14:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:19,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518718257] [2024-11-18 18:14:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518718257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:19,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:19,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:14:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107500215] [2024-11-18 18:14:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:19,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:14:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:19,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:14:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:14:19,945 INFO L87 Difference]: Start difference. First operand 292 states and 411 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:20,601 INFO L93 Difference]: Finished difference Result 497 states and 697 transitions. [2024-11-18 18:14:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:14:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-18 18:14:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:20,603 INFO L225 Difference]: With dead ends: 497 [2024-11-18 18:14:20,603 INFO L226 Difference]: Without dead ends: 330 [2024-11-18 18:14:20,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:14:20,603 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 238 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:20,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 583 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:14:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-18 18:14:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 294. [2024-11-18 18:14:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.4095563139931742) internal successors, (413), 293 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 413 transitions. [2024-11-18 18:14:20,609 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 413 transitions. Word has length 94 [2024-11-18 18:14:20,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:20,609 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 413 transitions. [2024-11-18 18:14:20,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 413 transitions. [2024-11-18 18:14:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 18:14:20,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:20,610 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:20,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:14:20,611 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:20,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 930172023, now seen corresponding path program 1 times [2024-11-18 18:14:20,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:20,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268036341] [2024-11-18 18:14:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:20,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268036341] [2024-11-18 18:14:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268036341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737501937] [2024-11-18 18:14:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:21,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:21,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:21,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 18:14:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:21,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 18:14:21,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:22,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:14:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737501937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:14:23,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:14:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 27 [2024-11-18 18:14:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063797222] [2024-11-18 18:14:23,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:14:23,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 18:14:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 18:14:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-18 18:14:23,396 INFO L87 Difference]: Start difference. First operand 294 states and 413 transitions. Second operand has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:25,384 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2024-11-18 18:14:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 18:14:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-18 18:14:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:25,386 INFO L225 Difference]: With dead ends: 743 [2024-11-18 18:14:25,386 INFO L226 Difference]: Without dead ends: 574 [2024-11-18 18:14:25,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=476, Invalid=2716, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 18:14:25,388 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 1713 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:25,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 933 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 18:14:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-18 18:14:25,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 411. [2024-11-18 18:14:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.424390243902439) internal successors, (584), 410 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 584 transitions. [2024-11-18 18:14:25,394 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 584 transitions. Word has length 94 [2024-11-18 18:14:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:25,395 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 584 transitions. [2024-11-18 18:14:25,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 584 transitions. [2024-11-18 18:14:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:14:25,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:25,395 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:25,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 18:14:25,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 18:14:25,600 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:25,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1039264284, now seen corresponding path program 1 times [2024-11-18 18:14:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672287732] [2024-11-18 18:14:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:26,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672287732] [2024-11-18 18:14:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672287732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:26,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:14:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410829664] [2024-11-18 18:14:26,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:26,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:14:26,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:14:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:14:26,907 INFO L87 Difference]: Start difference. First operand 411 states and 584 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:27,358 INFO L93 Difference]: Finished difference Result 690 states and 982 transitions. [2024-11-18 18:14:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:14:27,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-18 18:14:27,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:27,360 INFO L225 Difference]: With dead ends: 690 [2024-11-18 18:14:27,360 INFO L226 Difference]: Without dead ends: 412 [2024-11-18 18:14:27,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-18 18:14:27,360 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 211 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:27,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 722 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:14:27,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-18 18:14:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2024-11-18 18:14:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.421951219512195) internal successors, (583), 410 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 583 transitions. [2024-11-18 18:14:27,367 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 583 transitions. Word has length 96 [2024-11-18 18:14:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:27,367 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 583 transitions. [2024-11-18 18:14:27,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 583 transitions. [2024-11-18 18:14:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 18:14:27,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:27,368 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:27,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 18:14:27,369 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:27,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash 643304280, now seen corresponding path program 1 times [2024-11-18 18:14:27,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543985259] [2024-11-18 18:14:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:27,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543985259] [2024-11-18 18:14:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543985259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577887245] [2024-11-18 18:14:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:28,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:28,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 18:14:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:28,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-18 18:14:28,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:29,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:14:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577887245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:14:31,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:14:31,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 20] total 45 [2024-11-18 18:14:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946315603] [2024-11-18 18:14:31,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:14:31,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-18 18:14:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-18 18:14:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1706, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 18:14:31,123 INFO L87 Difference]: Start difference. First operand 411 states and 583 transitions. Second operand has 45 states, 45 states have (on average 6.044444444444444) internal successors, (272), 45 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:33,000 INFO L93 Difference]: Finished difference Result 741 states and 1049 transitions. [2024-11-18 18:14:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 18:14:33,000 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.044444444444444) internal successors, (272), 45 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-18 18:14:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:33,002 INFO L225 Difference]: With dead ends: 741 [2024-11-18 18:14:33,002 INFO L226 Difference]: Without dead ends: 405 [2024-11-18 18:14:33,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=464, Invalid=2958, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 18:14:33,003 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 511 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 3757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:33,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1028 Invalid, 3757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 18:14:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-18 18:14:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 385. [2024-11-18 18:14:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.4140625) internal successors, (543), 384 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 543 transitions. [2024-11-18 18:14:33,011 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 543 transitions. Word has length 97 [2024-11-18 18:14:33,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:33,012 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 543 transitions. [2024-11-18 18:14:33,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.044444444444444) internal successors, (272), 45 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 543 transitions. [2024-11-18 18:14:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 18:14:33,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:33,014 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:33,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 18:14:33,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:33,215 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:33,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash -911423619, now seen corresponding path program 1 times [2024-11-18 18:14:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547921008] [2024-11-18 18:14:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547921008] [2024-11-18 18:14:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547921008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:14:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232143303] [2024-11-18 18:14:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:34,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:14:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:14:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:14:34,592 INFO L87 Difference]: Start difference. First operand 385 states and 543 transitions. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:35,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:35,116 INFO L93 Difference]: Finished difference Result 1073 states and 1533 transitions. [2024-11-18 18:14:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:14:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-11-18 18:14:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:35,119 INFO L225 Difference]: With dead ends: 1073 [2024-11-18 18:14:35,119 INFO L226 Difference]: Without dead ends: 846 [2024-11-18 18:14:35,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:14:35,120 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 344 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:35,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 494 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:14:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-18 18:14:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 625. [2024-11-18 18:14:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 1.4150641025641026) internal successors, (883), 624 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 883 transitions. [2024-11-18 18:14:35,129 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 883 transitions. Word has length 141 [2024-11-18 18:14:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:35,129 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 883 transitions. [2024-11-18 18:14:35,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 883 transitions. [2024-11-18 18:14:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 18:14:35,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:35,131 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:35,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 18:14:35,131 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:35,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -467199913, now seen corresponding path program 1 times [2024-11-18 18:14:35,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:35,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370886029] [2024-11-18 18:14:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:36,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370886029] [2024-11-18 18:14:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370886029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:36,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:36,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:14:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977651953] [2024-11-18 18:14:36,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:36,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:14:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:14:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:14:36,622 INFO L87 Difference]: Start difference. First operand 625 states and 883 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:37,082 INFO L93 Difference]: Finished difference Result 1473 states and 2071 transitions. [2024-11-18 18:14:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:14:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-18 18:14:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:37,086 INFO L225 Difference]: With dead ends: 1473 [2024-11-18 18:14:37,086 INFO L226 Difference]: Without dead ends: 1033 [2024-11-18 18:14:37,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:14:37,087 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 279 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:37,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 554 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:14:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2024-11-18 18:14:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 701. [2024-11-18 18:14:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.3957142857142857) internal successors, (977), 700 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 977 transitions. [2024-11-18 18:14:37,100 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 977 transitions. Word has length 142 [2024-11-18 18:14:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:37,100 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 977 transitions. [2024-11-18 18:14:37,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 977 transitions. [2024-11-18 18:14:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 18:14:37,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:37,101 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:37,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 18:14:37,102 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:37,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1924255733, now seen corresponding path program 1 times [2024-11-18 18:14:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:37,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478514858] [2024-11-18 18:14:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 39 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:38,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478514858] [2024-11-18 18:14:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478514858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700902805] [2024-11-18 18:14:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:38,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:38,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:38,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 18:14:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:39,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 18:14:39,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:40,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:14:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700902805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:14:40,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:14:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2024-11-18 18:14:40,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859364394] [2024-11-18 18:14:40,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:14:40,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 18:14:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:40,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 18:14:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2024-11-18 18:14:40,907 INFO L87 Difference]: Start difference. First operand 701 states and 977 transitions. Second operand has 31 states, 31 states have (on average 11.741935483870968) internal successors, (364), 31 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:43,395 INFO L93 Difference]: Finished difference Result 2968 states and 4133 transitions. [2024-11-18 18:14:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-18 18:14:43,396 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 11.741935483870968) internal successors, (364), 31 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-18 18:14:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:43,402 INFO L225 Difference]: With dead ends: 2968 [2024-11-18 18:14:43,402 INFO L226 Difference]: Without dead ends: 2462 [2024-11-18 18:14:43,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=842, Invalid=5320, Unknown=0, NotChecked=0, Total=6162 [2024-11-18 18:14:43,405 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 3480 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 4817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:43,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 1757 Invalid, 4817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 18:14:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2024-11-18 18:14:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1618. [2024-11-18 18:14:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 1.4044526901669758) internal successors, (2271), 1617 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2271 transitions. [2024-11-18 18:14:43,442 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2271 transitions. Word has length 143 [2024-11-18 18:14:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:43,442 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2271 transitions. [2024-11-18 18:14:43,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.741935483870968) internal successors, (364), 31 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2271 transitions. [2024-11-18 18:14:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 18:14:43,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:43,445 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:43,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 18:14:43,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:43,650 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:43,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:43,650 INFO L85 PathProgramCache]: Analyzing trace with hash 69313758, now seen corresponding path program 1 times [2024-11-18 18:14:43,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:43,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662141127] [2024-11-18 18:14:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:43,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662141127] [2024-11-18 18:14:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662141127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:46,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:46,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 18:14:46,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922605724] [2024-11-18 18:14:46,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:46,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 18:14:46,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:46,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 18:14:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:14:46,272 INFO L87 Difference]: Start difference. First operand 1618 states and 2271 transitions. Second operand has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:46,827 INFO L93 Difference]: Finished difference Result 3858 states and 5393 transitions. [2024-11-18 18:14:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 18:14:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-18 18:14:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:46,833 INFO L225 Difference]: With dead ends: 3858 [2024-11-18 18:14:46,833 INFO L226 Difference]: Without dead ends: 2492 [2024-11-18 18:14:46,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:14:46,836 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 322 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:46,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 668 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:14:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2024-11-18 18:14:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 1874. [2024-11-18 18:14:46,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1873 states have (on average 1.393486385477843) internal successors, (2610), 1873 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2610 transitions. [2024-11-18 18:14:46,873 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2610 transitions. Word has length 145 [2024-11-18 18:14:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:46,873 INFO L471 AbstractCegarLoop]: Abstraction has 1874 states and 2610 transitions. [2024-11-18 18:14:46,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2610 transitions. [2024-11-18 18:14:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 18:14:46,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:46,876 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:46,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 18:14:46,876 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:46,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1186554387, now seen corresponding path program 1 times [2024-11-18 18:14:46,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:46,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974250391] [2024-11-18 18:14:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 18:14:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974250391] [2024-11-18 18:14:48,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974250391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:14:48,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:14:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:14:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205386753] [2024-11-18 18:14:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:14:48,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:14:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:14:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:14:48,589 INFO L87 Difference]: Start difference. First operand 1874 states and 2610 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:49,251 INFO L93 Difference]: Finished difference Result 3533 states and 4919 transitions. [2024-11-18 18:14:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:14:49,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-18 18:14:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:49,255 INFO L225 Difference]: With dead ends: 3533 [2024-11-18 18:14:49,256 INFO L226 Difference]: Without dead ends: 1991 [2024-11-18 18:14:49,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:14:49,258 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 216 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:49,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 709 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:14:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2024-11-18 18:14:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1538. [2024-11-18 18:14:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.3819128171763175) internal successors, (2124), 1537 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2124 transitions. [2024-11-18 18:14:49,280 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2124 transitions. Word has length 145 [2024-11-18 18:14:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:49,280 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2124 transitions. [2024-11-18 18:14:49,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2124 transitions. [2024-11-18 18:14:49,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 18:14:49,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:49,282 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:49,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 18:14:49,283 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1554661925, now seen corresponding path program 1 times [2024-11-18 18:14:49,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:49,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750982342] [2024-11-18 18:14:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750982342] [2024-11-18 18:14:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750982342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687697472] [2024-11-18 18:14:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:50,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:50,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:50,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:50,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 18:14:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:51,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-18 18:14:51,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 62 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:51,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:14:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687697472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:14:51,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:14:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 24 [2024-11-18 18:14:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090088264] [2024-11-18 18:14:51,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:14:51,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 18:14:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 18:14:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-18 18:14:51,914 INFO L87 Difference]: Start difference. First operand 1538 states and 2124 transitions. Second operand has 24 states, 24 states have (on average 14.583333333333334) internal successors, (350), 24 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:14:54,268 INFO L93 Difference]: Finished difference Result 9804 states and 13824 transitions. [2024-11-18 18:14:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-18 18:14:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.583333333333334) internal successors, (350), 24 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-18 18:14:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:14:54,287 INFO L225 Difference]: With dead ends: 9804 [2024-11-18 18:14:54,287 INFO L226 Difference]: Without dead ends: 8598 [2024-11-18 18:14:54,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=860, Invalid=6972, Unknown=0, NotChecked=0, Total=7832 [2024-11-18 18:14:54,292 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 966 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 4252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:14:54,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1453 Invalid, 4252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 18:14:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8598 states. [2024-11-18 18:14:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8598 to 3636. [2024-11-18 18:14:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 1.3898211829436038) internal successors, (5052), 3635 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5052 transitions. [2024-11-18 18:14:54,373 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5052 transitions. Word has length 145 [2024-11-18 18:14:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:14:54,373 INFO L471 AbstractCegarLoop]: Abstraction has 3636 states and 5052 transitions. [2024-11-18 18:14:54,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.583333333333334) internal successors, (350), 24 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:14:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5052 transitions. [2024-11-18 18:14:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 18:14:54,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:14:54,379 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:14:54,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 18:14:54,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 18:14:54,580 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:14:54,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:14:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1096831804, now seen corresponding path program 1 times [2024-11-18 18:14:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:14:54,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994922034] [2024-11-18 18:14:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:14:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:57,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:14:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994922034] [2024-11-18 18:14:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994922034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:14:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539954628] [2024-11-18 18:14:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:14:57,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:14:57,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:14:57,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:14:57,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 18:14:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:14:58,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-18 18:14:58,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:14:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:58,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:14:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 61 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:14:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539954628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:14:59,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:14:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 15] total 33 [2024-11-18 18:14:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027643792] [2024-11-18 18:14:59,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:14:59,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 18:14:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:14:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 18:14:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 18:14:59,785 INFO L87 Difference]: Start difference. First operand 3636 states and 5052 transitions. Second operand has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:02,327 INFO L93 Difference]: Finished difference Result 12940 states and 18134 transitions. [2024-11-18 18:15:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-18 18:15:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-18 18:15:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:02,347 INFO L225 Difference]: With dead ends: 12940 [2024-11-18 18:15:02,347 INFO L226 Difference]: Without dead ends: 9886 [2024-11-18 18:15:02,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=505, Invalid=4051, Unknown=0, NotChecked=0, Total=4556 [2024-11-18 18:15:02,353 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 669 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 5549 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 5558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 5549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:02,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1675 Invalid, 5558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 5549 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 18:15:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9886 states. [2024-11-18 18:15:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9886 to 7416. [2024-11-18 18:15:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7416 states, 7415 states have (on average 1.3871881321645314) internal successors, (10286), 7415 states have internal predecessors, (10286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7416 states to 7416 states and 10286 transitions. [2024-11-18 18:15:02,487 INFO L78 Accepts]: Start accepts. Automaton has 7416 states and 10286 transitions. Word has length 145 [2024-11-18 18:15:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:02,487 INFO L471 AbstractCegarLoop]: Abstraction has 7416 states and 10286 transitions. [2024-11-18 18:15:02,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7416 states and 10286 transitions. [2024-11-18 18:15:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:15:02,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:02,498 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:02,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 18:15:02,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:02,700 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:02,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash 502432213, now seen corresponding path program 1 times [2024-11-18 18:15:02,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:02,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765797893] [2024-11-18 18:15:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765797893] [2024-11-18 18:15:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765797893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981849438] [2024-11-18 18:15:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:03,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:03,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:15:03,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 18:15:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:04,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 18:15:04,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:04,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 63 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981849438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:05,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:05,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 11] total 22 [2024-11-18 18:15:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714434086] [2024-11-18 18:15:05,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:05,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 18:15:05,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 18:15:05,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-18 18:15:05,038 INFO L87 Difference]: Start difference. First operand 7416 states and 10286 transitions. Second operand has 22 states, 22 states have (on average 18.40909090909091) internal successors, (405), 22 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:06,227 INFO L93 Difference]: Finished difference Result 21348 states and 29694 transitions. [2024-11-18 18:15:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 18:15:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 18.40909090909091) internal successors, (405), 22 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-18 18:15:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:06,247 INFO L225 Difference]: With dead ends: 21348 [2024-11-18 18:15:06,247 INFO L226 Difference]: Without dead ends: 14872 [2024-11-18 18:15:06,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2024-11-18 18:15:06,256 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 752 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:06,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1205 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 18:15:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14872 states. [2024-11-18 18:15:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14872 to 8741. [2024-11-18 18:15:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8741 states, 8740 states have (on average 1.3850114416475972) internal successors, (12105), 8740 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 12105 transitions. [2024-11-18 18:15:06,394 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 12105 transitions. Word has length 146 [2024-11-18 18:15:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:06,395 INFO L471 AbstractCegarLoop]: Abstraction has 8741 states and 12105 transitions. [2024-11-18 18:15:06,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.40909090909091) internal successors, (405), 22 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 12105 transitions. [2024-11-18 18:15:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:15:06,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:06,411 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:06,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 18:15:06,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:06,612 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:06,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1233971864, now seen corresponding path program 1 times [2024-11-18 18:15:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:06,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370873504] [2024-11-18 18:15:06,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:08,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370873504] [2024-11-18 18:15:08,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370873504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:08,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:08,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 18:15:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689087973] [2024-11-18 18:15:08,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:08,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 18:15:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:08,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 18:15:08,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-18 18:15:08,332 INFO L87 Difference]: Start difference. First operand 8741 states and 12105 transitions. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:09,055 INFO L93 Difference]: Finished difference Result 18079 states and 24941 transitions. [2024-11-18 18:15:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:15:09,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-18 18:15:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:09,069 INFO L225 Difference]: With dead ends: 18079 [2024-11-18 18:15:09,069 INFO L226 Difference]: Without dead ends: 10435 [2024-11-18 18:15:09,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-18 18:15:09,076 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 296 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:09,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 766 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:15:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2024-11-18 18:15:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10049. [2024-11-18 18:15:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 10048 states have (on average 1.3743033439490446) internal successors, (13809), 10048 states have internal predecessors, (13809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 13809 transitions. [2024-11-18 18:15:09,207 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 13809 transitions. Word has length 146 [2024-11-18 18:15:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:09,207 INFO L471 AbstractCegarLoop]: Abstraction has 10049 states and 13809 transitions. [2024-11-18 18:15:09,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 13809 transitions. [2024-11-18 18:15:09,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:15:09,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:09,227 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:09,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 18:15:09,227 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:09,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1744914604, now seen corresponding path program 1 times [2024-11-18 18:15:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803973485] [2024-11-18 18:15:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 46 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:11,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803973485] [2024-11-18 18:15:11,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803973485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716330713] [2024-11-18 18:15:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:11,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:11,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:11,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:15:11,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 18:15:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:12,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-18 18:15:12,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:13,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716330713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:13,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 15] total 47 [2024-11-18 18:15:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736489898] [2024-11-18 18:15:13,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:13,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-18 18:15:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-18 18:15:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1936, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 18:15:13,734 INFO L87 Difference]: Start difference. First operand 10049 states and 13809 transitions. Second operand has 47 states, 47 states have (on average 8.23404255319149) internal successors, (387), 47 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:16,899 INFO L93 Difference]: Finished difference Result 29840 states and 40897 transitions. [2024-11-18 18:15:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-18 18:15:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.23404255319149) internal successors, (387), 47 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-18 18:15:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:16,923 INFO L225 Difference]: With dead ends: 29840 [2024-11-18 18:15:16,923 INFO L226 Difference]: Without dead ends: 21026 [2024-11-18 18:15:16,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1307, Invalid=10035, Unknown=0, NotChecked=0, Total=11342 [2024-11-18 18:15:16,939 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 2373 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 4142 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 4175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:16,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2373 Valid, 1369 Invalid, 4175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4142 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 18:15:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21026 states. [2024-11-18 18:15:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21026 to 16751. [2024-11-18 18:15:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16751 states, 16750 states have (on average 1.3895522388059702) internal successors, (23275), 16750 states have internal predecessors, (23275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16751 states to 16751 states and 23275 transitions. [2024-11-18 18:15:17,184 INFO L78 Accepts]: Start accepts. Automaton has 16751 states and 23275 transitions. Word has length 146 [2024-11-18 18:15:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:17,184 INFO L471 AbstractCegarLoop]: Abstraction has 16751 states and 23275 transitions. [2024-11-18 18:15:17,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.23404255319149) internal successors, (387), 47 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 16751 states and 23275 transitions. [2024-11-18 18:15:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:15:17,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:17,201 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:17,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 18:15:17,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 18:15:17,402 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:17,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1312551786, now seen corresponding path program 1 times [2024-11-18 18:15:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107073390] [2024-11-18 18:15:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 18:15:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107073390] [2024-11-18 18:15:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107073390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:18,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435642517] [2024-11-18 18:15:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:18,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:18,323 INFO L87 Difference]: Start difference. First operand 16751 states and 23275 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:18,647 INFO L93 Difference]: Finished difference Result 30217 states and 42168 transitions. [2024-11-18 18:15:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:18,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-18 18:15:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:18,666 INFO L225 Difference]: With dead ends: 30217 [2024-11-18 18:15:18,666 INFO L226 Difference]: Without dead ends: 14345 [2024-11-18 18:15:18,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:18,681 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 265 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:18,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 179 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:15:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14345 states. [2024-11-18 18:15:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14345 to 13665. [2024-11-18 18:15:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13664 states have (on average 1.38605093676815) internal successors, (18939), 13664 states have internal predecessors, (18939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 18939 transitions. [2024-11-18 18:15:18,848 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 18939 transitions. Word has length 146 [2024-11-18 18:15:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:18,848 INFO L471 AbstractCegarLoop]: Abstraction has 13665 states and 18939 transitions. [2024-11-18 18:15:18,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 18939 transitions. [2024-11-18 18:15:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:15:18,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:18,859 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:18,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 18:15:18,859 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:18,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:18,860 INFO L85 PathProgramCache]: Analyzing trace with hash 174066864, now seen corresponding path program 1 times [2024-11-18 18:15:18,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:18,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869754366] [2024-11-18 18:15:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 18:15:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869754366] [2024-11-18 18:15:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869754366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:19,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:19,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551381177] [2024-11-18 18:15:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:19,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:19,956 INFO L87 Difference]: Start difference. First operand 13665 states and 18939 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,251 INFO L93 Difference]: Finished difference Result 27299 states and 37850 transitions. [2024-11-18 18:15:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:20,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-18 18:15:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,266 INFO L225 Difference]: With dead ends: 27299 [2024-11-18 18:15:20,267 INFO L226 Difference]: Without dead ends: 13833 [2024-11-18 18:15:20,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:15:20,280 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 264 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 177 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:15:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13833 states. [2024-11-18 18:15:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13833 to 13727. [2024-11-18 18:15:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13727 states, 13726 states have (on average 1.3854728252950606) internal successors, (19017), 13726 states have internal predecessors, (19017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 19017 transitions. [2024-11-18 18:15:20,445 INFO L78 Accepts]: Start accepts. Automaton has 13727 states and 19017 transitions. Word has length 146 [2024-11-18 18:15:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:20,445 INFO L471 AbstractCegarLoop]: Abstraction has 13727 states and 19017 transitions. [2024-11-18 18:15:20,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13727 states and 19017 transitions. [2024-11-18 18:15:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:15:20,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:20,454 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:20,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 18:15:20,455 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:20,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash -400108738, now seen corresponding path program 1 times [2024-11-18 18:15:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:20,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712447049] [2024-11-18 18:15:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 18:15:22,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:22,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712447049] [2024-11-18 18:15:22,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712447049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:22,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:22,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:22,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182538301] [2024-11-18 18:15:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:22,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:22,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:22,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:22,963 INFO L87 Difference]: Start difference. First operand 13727 states and 19017 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:23,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:23,247 INFO L93 Difference]: Finished difference Result 27193 states and 37686 transitions. [2024-11-18 18:15:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-18 18:15:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:23,259 INFO L225 Difference]: With dead ends: 27193 [2024-11-18 18:15:23,259 INFO L226 Difference]: Without dead ends: 13622 [2024-11-18 18:15:23,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:23,271 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 190 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:23,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 175 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:15:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13622 states. [2024-11-18 18:15:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13622 to 13618. [2024-11-18 18:15:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13618 states, 13617 states have (on average 1.3858412278769185) internal successors, (18871), 13617 states have internal predecessors, (18871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13618 states to 13618 states and 18871 transitions. [2024-11-18 18:15:23,415 INFO L78 Accepts]: Start accepts. Automaton has 13618 states and 18871 transitions. Word has length 146 [2024-11-18 18:15:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:23,416 INFO L471 AbstractCegarLoop]: Abstraction has 13618 states and 18871 transitions. [2024-11-18 18:15:23,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 13618 states and 18871 transitions. [2024-11-18 18:15:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 18:15:23,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:23,424 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:23,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 18:15:23,424 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:23,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash -857880979, now seen corresponding path program 1 times [2024-11-18 18:15:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396462528] [2024-11-18 18:15:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 18:15:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396462528] [2024-11-18 18:15:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396462528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690121293] [2024-11-18 18:15:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:24,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:24,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:15:24,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 18:15:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:25,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-18 18:15:25,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 18:15:26,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:15:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690121293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:26,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:15:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-11-18 18:15:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815204588] [2024-11-18 18:15:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:26,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:15:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:15:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:15:26,098 INFO L87 Difference]: Start difference. First operand 13618 states and 18871 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)