./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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.vis_QF_BV_s1269b_p2.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 895ff1e019ffafaf8b2f8e3efbd16ea4845b2e4eac0a4db8b4c86c462883ae8c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 11:55:53,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 11:55:53,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 11:55:53,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 11:55:53,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 11:55:53,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 11:55:53,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 11:55:53,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 11:55:53,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 11:55:53,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 11:55:53,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 11:55:53,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 11:55:53,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 11:55:53,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 11:55:53,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 11:55:53,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 11:55:53,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 11:55:53,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 11:55:53,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 11:55:53,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 11:55:53,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 11:55:53,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 11:55:53,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 11:55:53,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 11:55:53,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 11:55:53,662 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 11:55:53,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 11:55:53,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 11:55:53,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 11:55:53,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:55:53,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 11:55:53,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 11:55:53,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 11:55:53,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 11:55:53,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 11:55:53,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 11:55:53,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 11:55:53,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 11:55:53,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 11:55:53,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 895ff1e019ffafaf8b2f8e3efbd16ea4845b2e4eac0a4db8b4c86c462883ae8c [2024-11-16 11:55:53,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 11:55:53,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 11:55:53,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 11:55:53,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 11:55:53,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 11:55:53,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p2.c [2024-11-16 11:55:55,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 11:55:55,710 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 11:55:55,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p2.c [2024-11-16 11:55:55,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd596e00/a5198d33415b4ad59eacd51e7d95e5cf/FLAGa58361afd [2024-11-16 11:55:56,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd596e00/a5198d33415b4ad59eacd51e7d95e5cf [2024-11-16 11:55:56,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 11:55:56,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 11:55:56,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 11:55:56,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 11:55:56,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 11:55:56,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb3bba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56, skipping insertion in model container [2024-11-16 11:55:56,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 11:55:56,256 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.vis_QF_BV_s1269b_p2.c[1259,1272] [2024-11-16 11:55:56,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:55:56,337 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 11:55:56,347 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.vis_QF_BV_s1269b_p2.c[1259,1272] [2024-11-16 11:55:56,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:55:56,427 INFO L204 MainTranslator]: Completed translation [2024-11-16 11:55:56,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56 WrapperNode [2024-11-16 11:55:56,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 11:55:56,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 11:55:56,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 11:55:56,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 11:55:56,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,526 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 483 [2024-11-16 11:55:56,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 11:55:56,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 11:55:56,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 11:55:56,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 11:55:56,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,582 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]. [2024-11-16 11:55:56,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,601 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 11:55:56,620 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 11:55:56,620 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 11:55:56,620 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 11:55:56,621 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (1/1) ... [2024-11-16 11:55:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:55:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:55:56,717 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) [2024-11-16 11:55:56,723 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 [2024-11-16 11:55:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 11:55:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 11:55:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 11:55:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 11:55:56,867 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 11:55:56,869 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 11:55:57,431 INFO L? ?]: Removed 251 outVars from TransFormulas that were not future-live. [2024-11-16 11:55:57,431 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 11:55:57,477 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 11:55:57,478 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 11:55:57,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:55:57 BoogieIcfgContainer [2024-11-16 11:55:57,479 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 11:55:57,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 11:55:57,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 11:55:57,485 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 11:55:57,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:55:56" (1/3) ... [2024-11-16 11:55:57,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4455f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:57, skipping insertion in model container [2024-11-16 11:55:57,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:56" (2/3) ... [2024-11-16 11:55:57,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4455f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:57, skipping insertion in model container [2024-11-16 11:55:57,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:55:57" (3/3) ... [2024-11-16 11:55:57,490 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p2.c [2024-11-16 11:55:57,510 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 11:55:57,511 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 11:55:57,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 11:55:57,588 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;@39b08b3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 11:55:57,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 11:55:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 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) [2024-11-16 11:55:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 11:55:57,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:57,602 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] [2024-11-16 11:55:57,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:57,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:57,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1365915867, now seen corresponding path program 1 times [2024-11-16 11:55:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:57,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142496094] [2024-11-16 11:55:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142496094] [2024-11-16 11:55:58,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142496094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:58,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:58,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:55:58,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625907359] [2024-11-16 11:55:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:58,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:55:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:55:58,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:55:58,242 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 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 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-16 11:55:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:58,349 INFO L93 Difference]: Finished difference Result 237 states and 349 transitions. [2024-11-16 11:55:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:55:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2024-11-16 11:55:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:58,360 INFO L225 Difference]: With dead ends: 237 [2024-11-16 11:55:58,360 INFO L226 Difference]: Without dead ends: 126 [2024-11-16 11:55:58,362 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 [2024-11-16 11:55:58,366 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:58,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:55:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-16 11:55:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-16 11:55:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.472) internal successors, (184), 125 states have internal predecessors, (184), 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) [2024-11-16 11:55:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2024-11-16 11:55:58,401 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 24 [2024-11-16 11:55:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:58,402 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2024-11-16 11:55:58,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-16 11:55:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2024-11-16 11:55:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 11:55:58,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:58,403 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] [2024-11-16 11:55:58,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 11:55:58,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:58,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash -461227566, now seen corresponding path program 1 times [2024-11-16 11:55:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515344172] [2024-11-16 11:55:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:58,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:58,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515344172] [2024-11-16 11:55:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515344172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:58,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:58,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:55:58,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673246884] [2024-11-16 11:55:58,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:58,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:55:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:55:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:55:58,529 INFO L87 Difference]: Start difference. First operand 126 states and 184 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-16 11:55:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:58,629 INFO L93 Difference]: Finished difference Result 236 states and 345 transitions. [2024-11-16 11:55:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:55:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2024-11-16 11:55:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:58,631 INFO L225 Difference]: With dead ends: 236 [2024-11-16 11:55:58,631 INFO L226 Difference]: Without dead ends: 128 [2024-11-16 11:55:58,632 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 [2024-11-16 11:55:58,632 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:58,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:55:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-16 11:55:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-16 11:55:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.4645669291338583) internal successors, (186), 127 states have internal predecessors, (186), 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) [2024-11-16 11:55:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 186 transitions. [2024-11-16 11:55:58,646 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 186 transitions. Word has length 25 [2024-11-16 11:55:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:58,646 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 186 transitions. [2024-11-16 11:55:58,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-16 11:55:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 186 transitions. [2024-11-16 11:55:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 11:55:58,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:58,647 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] [2024-11-16 11:55:58,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 11:55:58,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:58,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1665908960, now seen corresponding path program 1 times [2024-11-16 11:55:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:58,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090407086] [2024-11-16 11:55:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:58,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090407086] [2024-11-16 11:55:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090407086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:58,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:58,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:55:58,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062103928] [2024-11-16 11:55:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:58,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:55:58,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:55:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:55:58,869 INFO L87 Difference]: Start difference. First operand 128 states and 186 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2024-11-16 11:55:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:58,996 INFO L93 Difference]: Finished difference Result 252 states and 367 transitions. [2024-11-16 11:55:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:55:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 26 [2024-11-16 11:55:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:58,999 INFO L225 Difference]: With dead ends: 252 [2024-11-16 11:55:58,999 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 11:55:59,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:55:59,000 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 26 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:59,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 844 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:55:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 11:55:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-16 11:55:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.457142857142857) internal successors, (204), 140 states have internal predecessors, (204), 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) [2024-11-16 11:55:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 204 transitions. [2024-11-16 11:55:59,010 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 204 transitions. Word has length 26 [2024-11-16 11:55:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:59,010 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 204 transitions. [2024-11-16 11:55:59,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2024-11-16 11:55:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 204 transitions. [2024-11-16 11:55:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 11:55:59,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:59,011 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] [2024-11-16 11:55:59,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 11:55:59,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:59,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash -151375731, now seen corresponding path program 1 times [2024-11-16 11:55:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203677715] [2024-11-16 11:55:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203677715] [2024-11-16 11:55:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203677715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:59,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:59,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 11:55:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999174535] [2024-11-16 11:55:59,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:59,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 11:55:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:59,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 11:55:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:55:59,390 INFO L87 Difference]: Start difference. First operand 141 states and 204 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-16 11:55:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:55:59,573 INFO L93 Difference]: Finished difference Result 256 states and 371 transitions. [2024-11-16 11:55:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:55:59,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2024-11-16 11:55:59,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:55:59,575 INFO L225 Difference]: With dead ends: 256 [2024-11-16 11:55:59,576 INFO L226 Difference]: Without dead ends: 146 [2024-11-16 11:55:59,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:55:59,577 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 25 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:55:59,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 982 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:55:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-16 11:55:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2024-11-16 11:55:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4513888888888888) internal successors, (209), 144 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) [2024-11-16 11:55:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 209 transitions. [2024-11-16 11:55:59,590 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 209 transitions. Word has length 28 [2024-11-16 11:55:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:55:59,591 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 209 transitions. [2024-11-16 11:55:59,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-16 11:55:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 209 transitions. [2024-11-16 11:55:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 11:55:59,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:55:59,592 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] [2024-11-16 11:55:59,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 11:55:59,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:55:59,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:55:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2145012836, now seen corresponding path program 1 times [2024-11-16 11:55:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:55:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751012780] [2024-11-16 11:55:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:55:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:55:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:55:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:55:59,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:55:59,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751012780] [2024-11-16 11:55:59,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751012780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:55:59,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:55:59,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:55:59,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921368812] [2024-11-16 11:55:59,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:55:59,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:55:59,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:55:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:55:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:55:59,882 INFO L87 Difference]: Start difference. First operand 145 states and 209 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-16 11:56:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:00,037 INFO L93 Difference]: Finished difference Result 266 states and 383 transitions. [2024-11-16 11:56:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:00,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 29 [2024-11-16 11:56:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:00,038 INFO L225 Difference]: With dead ends: 266 [2024-11-16 11:56:00,039 INFO L226 Difference]: Without dead ends: 146 [2024-11-16 11:56:00,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:00,041 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 25 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:00,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 842 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-16 11:56:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-16 11:56:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4413793103448276) internal successors, (209), 145 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) [2024-11-16 11:56:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 209 transitions. [2024-11-16 11:56:00,052 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 209 transitions. Word has length 29 [2024-11-16 11:56:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:00,053 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 209 transitions. [2024-11-16 11:56:00,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-16 11:56:00,053 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 209 transitions. [2024-11-16 11:56:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 11:56:00,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:00,058 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] [2024-11-16 11:56:00,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 11:56:00,058 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:00,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1415650292, now seen corresponding path program 1 times [2024-11-16 11:56:00,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:00,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306329034] [2024-11-16 11:56:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:00,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:00,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306329034] [2024-11-16 11:56:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306329034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:00,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:00,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:00,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732913990] [2024-11-16 11:56:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:00,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:00,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:00,189 INFO L87 Difference]: Start difference. First operand 146 states and 209 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2024-11-16 11:56:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:00,337 INFO L93 Difference]: Finished difference Result 327 states and 466 transitions. [2024-11-16 11:56:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:00,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 30 [2024-11-16 11:56:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:00,338 INFO L225 Difference]: With dead ends: 327 [2024-11-16 11:56:00,338 INFO L226 Difference]: Without dead ends: 202 [2024-11-16 11:56:00,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:56:00,339 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 108 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:00,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 821 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:00,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-16 11:56:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 147. [2024-11-16 11:56:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4315068493150684) internal successors, (209), 146 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) [2024-11-16 11:56:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 209 transitions. [2024-11-16 11:56:00,351 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 209 transitions. Word has length 30 [2024-11-16 11:56:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:00,351 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 209 transitions. [2024-11-16 11:56:00,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2024-11-16 11:56:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 209 transitions. [2024-11-16 11:56:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 11:56:00,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:00,352 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] [2024-11-16 11:56:00,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 11:56:00,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:00,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1661422057, now seen corresponding path program 1 times [2024-11-16 11:56:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217654812] [2024-11-16 11:56:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:00,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217654812] [2024-11-16 11:56:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217654812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:00,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966094811] [2024-11-16 11:56:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:00,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:00,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:00,451 INFO L87 Difference]: Start difference. First operand 147 states and 209 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-16 11:56:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:00,577 INFO L93 Difference]: Finished difference Result 318 states and 456 transitions. [2024-11-16 11:56:00,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:00,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-16 11:56:00,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:00,581 INFO L225 Difference]: With dead ends: 318 [2024-11-16 11:56:00,581 INFO L226 Difference]: Without dead ends: 193 [2024-11-16 11:56:00,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:00,582 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 106 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:00,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 563 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-16 11:56:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 136. [2024-11-16 11:56:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4370370370370371) internal successors, (194), 135 states have internal predecessors, (194), 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) [2024-11-16 11:56:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2024-11-16 11:56:00,591 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 31 [2024-11-16 11:56:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:00,592 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2024-11-16 11:56:00,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-16 11:56:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2024-11-16 11:56:00,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 11:56:00,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:00,600 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] [2024-11-16 11:56:00,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 11:56:00,600 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:00,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash 891205634, now seen corresponding path program 1 times [2024-11-16 11:56:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971356411] [2024-11-16 11:56:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:00,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:01,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:01,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971356411] [2024-11-16 11:56:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971356411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:01,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:01,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:01,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695930063] [2024-11-16 11:56:01,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:01,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:01,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:01,026 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2024-11-16 11:56:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:01,324 INFO L93 Difference]: Finished difference Result 306 states and 442 transitions. [2024-11-16 11:56:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 79 [2024-11-16 11:56:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:01,326 INFO L225 Difference]: With dead ends: 306 [2024-11-16 11:56:01,326 INFO L226 Difference]: Without dead ends: 196 [2024-11-16 11:56:01,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:56:01,327 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 110 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:01,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 712 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-16 11:56:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 153. [2024-11-16 11:56:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4210526315789473) internal successors, (216), 152 states have internal predecessors, (216), 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) [2024-11-16 11:56:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 216 transitions. [2024-11-16 11:56:01,333 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 216 transitions. Word has length 79 [2024-11-16 11:56:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:01,333 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 216 transitions. [2024-11-16 11:56:01,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2024-11-16 11:56:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 216 transitions. [2024-11-16 11:56:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 11:56:01,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:01,335 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] [2024-11-16 11:56:01,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 11:56:01,335 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:01,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash -810385855, now seen corresponding path program 1 times [2024-11-16 11:56:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:01,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766738417] [2024-11-16 11:56:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:01,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766738417] [2024-11-16 11:56:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766738417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:01,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221141952] [2024-11-16 11:56:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:01,640 INFO L87 Difference]: Start difference. First operand 153 states and 216 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-11-16 11:56:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:01,759 INFO L93 Difference]: Finished difference Result 288 states and 413 transitions. [2024-11-16 11:56:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 80 [2024-11-16 11:56:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:01,761 INFO L225 Difference]: With dead ends: 288 [2024-11-16 11:56:01,761 INFO L226 Difference]: Without dead ends: 178 [2024-11-16 11:56:01,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:01,762 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 65 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:01,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 554 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-16 11:56:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 153. [2024-11-16 11:56:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4144736842105263) internal successors, (215), 152 states have internal predecessors, (215), 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) [2024-11-16 11:56:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 215 transitions. [2024-11-16 11:56:01,768 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 215 transitions. Word has length 80 [2024-11-16 11:56:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:01,768 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 215 transitions. [2024-11-16 11:56:01,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-11-16 11:56:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 215 transitions. [2024-11-16 11:56:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 11:56:01,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:01,769 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] [2024-11-16 11:56:01,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 11:56:01,769 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:01,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1610242652, now seen corresponding path program 1 times [2024-11-16 11:56:01,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:01,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534992150] [2024-11-16 11:56:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:01,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534992150] [2024-11-16 11:56:02,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534992150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:02,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:02,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 11:56:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869804046] [2024-11-16 11:56:02,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:02,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:56:02,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:56:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:02,140 INFO L87 Difference]: Start difference. First operand 153 states and 215 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 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) [2024-11-16 11:56:02,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:02,319 INFO L93 Difference]: Finished difference Result 281 states and 402 transitions. [2024-11-16 11:56:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 11:56:02,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 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 80 [2024-11-16 11:56:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:02,320 INFO L225 Difference]: With dead ends: 281 [2024-11-16 11:56:02,320 INFO L226 Difference]: Without dead ends: 171 [2024-11-16 11:56:02,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:02,321 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 11 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:02,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1173 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-16 11:56:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2024-11-16 11:56:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4082840236686391) internal successors, (238), 169 states have internal predecessors, (238), 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) [2024-11-16 11:56:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 238 transitions. [2024-11-16 11:56:02,324 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 238 transitions. Word has length 80 [2024-11-16 11:56:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:02,325 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 238 transitions. [2024-11-16 11:56:02,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 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) [2024-11-16 11:56:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 238 transitions. [2024-11-16 11:56:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 11:56:02,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:02,326 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] [2024-11-16 11:56:02,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 11:56:02,326 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:02,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -597888297, now seen corresponding path program 1 times [2024-11-16 11:56:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911691828] [2024-11-16 11:56:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:03,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:03,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911691828] [2024-11-16 11:56:03,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911691828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:03,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588172277] [2024-11-16 11:56:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:03,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:03,544 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) [2024-11-16 11:56:03,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 11:56:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:03,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 11:56:03,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:04,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:56:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588172277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:04,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:56:04,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 25 [2024-11-16 11:56:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468440272] [2024-11-16 11:56:04,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:04,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:56:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:56:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2024-11-16 11:56:04,028 INFO L87 Difference]: Start difference. First operand 170 states and 238 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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) [2024-11-16 11:56:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:04,315 INFO L93 Difference]: Finished difference Result 323 states and 460 transitions. [2024-11-16 11:56:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 11:56:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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 81 [2024-11-16 11:56:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:04,317 INFO L225 Difference]: With dead ends: 323 [2024-11-16 11:56:04,317 INFO L226 Difference]: Without dead ends: 196 [2024-11-16 11:56:04,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2024-11-16 11:56:04,319 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 62 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:04,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1091 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-16 11:56:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 181. [2024-11-16 11:56:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4) internal successors, (252), 180 states have internal predecessors, (252), 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) [2024-11-16 11:56:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 252 transitions. [2024-11-16 11:56:04,324 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 252 transitions. Word has length 81 [2024-11-16 11:56:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:04,324 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 252 transitions. [2024-11-16 11:56:04,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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) [2024-11-16 11:56:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 252 transitions. [2024-11-16 11:56:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 11:56:04,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:04,326 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] [2024-11-16 11:56:04,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 11:56:04,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 11:56:04,531 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:04,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1175196672, now seen corresponding path program 1 times [2024-11-16 11:56:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:04,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161812708] [2024-11-16 11:56:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:04,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:04,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161812708] [2024-11-16 11:56:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161812708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:04,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523225414] [2024-11-16 11:56:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:04,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:04,774 INFO L87 Difference]: Start difference. First operand 181 states and 252 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-16 11:56:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:04,875 INFO L93 Difference]: Finished difference Result 317 states and 448 transitions. [2024-11-16 11:56:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:04,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2024-11-16 11:56:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:04,877 INFO L225 Difference]: With dead ends: 317 [2024-11-16 11:56:04,877 INFO L226 Difference]: Without dead ends: 190 [2024-11-16 11:56:04,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:04,878 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 45 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:04,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 554 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-16 11:56:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 181. [2024-11-16 11:56:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.3944444444444444) internal successors, (251), 180 states have internal predecessors, (251), 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) [2024-11-16 11:56:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 251 transitions. [2024-11-16 11:56:04,882 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 251 transitions. Word has length 82 [2024-11-16 11:56:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:04,883 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 251 transitions. [2024-11-16 11:56:04,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-16 11:56:04,883 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 251 transitions. [2024-11-16 11:56:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 11:56:04,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:04,884 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] [2024-11-16 11:56:04,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 11:56:04,884 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:04,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 129083461, now seen corresponding path program 1 times [2024-11-16 11:56:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036848760] [2024-11-16 11:56:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036848760] [2024-11-16 11:56:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036848760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:06,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:06,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-16 11:56:06,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301935342] [2024-11-16 11:56:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:06,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 11:56:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 11:56:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-16 11:56:06,566 INFO L87 Difference]: Start difference. First operand 181 states and 251 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 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) [2024-11-16 11:56:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:07,237 INFO L93 Difference]: Finished difference Result 377 states and 537 transitions. [2024-11-16 11:56:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 11:56:07,237 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 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 82 [2024-11-16 11:56:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:07,238 INFO L225 Difference]: With dead ends: 377 [2024-11-16 11:56:07,239 INFO L226 Difference]: Without dead ends: 250 [2024-11-16 11:56:07,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-16 11:56:07,239 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 438 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:07,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 2027 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-16 11:56:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 220. [2024-11-16 11:56:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4109589041095891) internal successors, (309), 219 states have internal predecessors, (309), 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) [2024-11-16 11:56:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 309 transitions. [2024-11-16 11:56:07,245 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 309 transitions. Word has length 82 [2024-11-16 11:56:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:07,245 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 309 transitions. [2024-11-16 11:56:07,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 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) [2024-11-16 11:56:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 309 transitions. [2024-11-16 11:56:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 11:56:07,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:07,246 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] [2024-11-16 11:56:07,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 11:56:07,246 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:07,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash -262623136, now seen corresponding path program 1 times [2024-11-16 11:56:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341332180] [2024-11-16 11:56:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341332180] [2024-11-16 11:56:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341332180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-16 11:56:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378165179] [2024-11-16 11:56:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:08,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 11:56:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 11:56:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-16 11:56:08,103 INFO L87 Difference]: Start difference. First operand 220 states and 309 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-16 11:56:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:08,755 INFO L93 Difference]: Finished difference Result 407 states and 581 transitions. [2024-11-16 11:56:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 11:56:08,756 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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 82 [2024-11-16 11:56:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:08,757 INFO L225 Difference]: With dead ends: 407 [2024-11-16 11:56:08,757 INFO L226 Difference]: Without dead ends: 259 [2024-11-16 11:56:08,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-16 11:56:08,758 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 146 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:08,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 717 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-16 11:56:08,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 229. [2024-11-16 11:56:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.412280701754386) internal successors, (322), 228 states have internal predecessors, (322), 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) [2024-11-16 11:56:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2024-11-16 11:56:08,764 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 82 [2024-11-16 11:56:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:08,764 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2024-11-16 11:56:08,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-16 11:56:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2024-11-16 11:56:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 11:56:08,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:08,765 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] [2024-11-16 11:56:08,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 11:56:08,766 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:08,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash -829285173, now seen corresponding path program 1 times [2024-11-16 11:56:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:08,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586335550] [2024-11-16 11:56:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:08,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586335550] [2024-11-16 11:56:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586335550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:09,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884151151] [2024-11-16 11:56:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:09,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:09,139 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-11-16 11:56:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:09,394 INFO L93 Difference]: Finished difference Result 373 states and 530 transitions. [2024-11-16 11:56:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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 83 [2024-11-16 11:56:09,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:09,395 INFO L225 Difference]: With dead ends: 373 [2024-11-16 11:56:09,395 INFO L226 Difference]: Without dead ends: 242 [2024-11-16 11:56:09,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:09,397 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 5 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:09,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 863 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-16 11:56:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-16 11:56:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.4024896265560165) internal successors, (338), 241 states have internal predecessors, (338), 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) [2024-11-16 11:56:09,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2024-11-16 11:56:09,402 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 338 transitions. Word has length 83 [2024-11-16 11:56:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:09,402 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 338 transitions. [2024-11-16 11:56:09,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-11-16 11:56:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 338 transitions. [2024-11-16 11:56:09,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 11:56:09,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:09,404 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] [2024-11-16 11:56:09,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 11:56:09,404 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:09,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:09,404 INFO L85 PathProgramCache]: Analyzing trace with hash 856533532, now seen corresponding path program 1 times [2024-11-16 11:56:09,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:09,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49046247] [2024-11-16 11:56:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:09,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49046247] [2024-11-16 11:56:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49046247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:09,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:09,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 11:56:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585823594] [2024-11-16 11:56:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:09,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 11:56:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 11:56:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:56:09,972 INFO L87 Difference]: Start difference. First operand 242 states and 338 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-11-16 11:56:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:10,322 INFO L93 Difference]: Finished difference Result 568 states and 804 transitions. [2024-11-16 11:56:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 11:56:10,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 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 83 [2024-11-16 11:56:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:10,324 INFO L225 Difference]: With dead ends: 568 [2024-11-16 11:56:10,324 INFO L226 Difference]: Without dead ends: 430 [2024-11-16 11:56:10,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-16 11:56:10,325 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 171 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:10,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2305 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-16 11:56:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 326. [2024-11-16 11:56:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.4092307692307693) internal successors, (458), 325 states have internal predecessors, (458), 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) [2024-11-16 11:56:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 458 transitions. [2024-11-16 11:56:10,332 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 458 transitions. Word has length 83 [2024-11-16 11:56:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:10,332 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 458 transitions. [2024-11-16 11:56:10,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-11-16 11:56:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 458 transitions. [2024-11-16 11:56:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 11:56:10,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:10,334 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] [2024-11-16 11:56:10,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 11:56:10,335 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:10,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 174444965, now seen corresponding path program 1 times [2024-11-16 11:56:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724934134] [2024-11-16 11:56:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:10,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:10,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724934134] [2024-11-16 11:56:10,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724934134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:10,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:10,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 11:56:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40286587] [2024-11-16 11:56:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:10,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 11:56:10,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 11:56:10,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 11:56:10,678 INFO L87 Difference]: Start difference. First operand 326 states and 458 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-16 11:56:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:10,720 INFO L93 Difference]: Finished difference Result 525 states and 742 transitions. [2024-11-16 11:56:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 11:56:10,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2024-11-16 11:56:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:10,721 INFO L225 Difference]: With dead ends: 525 [2024-11-16 11:56:10,721 INFO L226 Difference]: Without dead ends: 255 [2024-11-16 11:56:10,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 11:56:10,722 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 2 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:10,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 11:56:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-16 11:56:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2024-11-16 11:56:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3928571428571428) internal successors, (351), 252 states have internal predecessors, (351), 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) [2024-11-16 11:56:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 351 transitions. [2024-11-16 11:56:10,733 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 351 transitions. Word has length 84 [2024-11-16 11:56:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:10,733 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 351 transitions. [2024-11-16 11:56:10,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-16 11:56:10,735 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 351 transitions. [2024-11-16 11:56:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 11:56:10,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:10,736 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] [2024-11-16 11:56:10,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 11:56:10,736 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:10,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1996133812, now seen corresponding path program 1 times [2024-11-16 11:56:10,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394651928] [2024-11-16 11:56:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:11,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394651928] [2024-11-16 11:56:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394651928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141517905] [2024-11-16 11:56:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:11,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:11,294 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) [2024-11-16 11:56:11,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 11:56:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:11,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-16 11:56:11,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:12,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:56:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:14,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141517905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:56:14,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:56:14,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 27, 27] total 62 [2024-11-16 11:56:14,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759133419] [2024-11-16 11:56:14,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:56:14,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-16 11:56:14,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-16 11:56:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3563, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 11:56:14,526 INFO L87 Difference]: Start difference. First operand 253 states and 351 transitions. Second operand has 62 states, 62 states have (on average 3.193548387096774) internal successors, (198), 62 states have internal predecessors, (198), 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) [2024-11-16 11:56:17,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:17,726 INFO L93 Difference]: Finished difference Result 728 states and 1030 transitions. [2024-11-16 11:56:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-16 11:56:17,727 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.193548387096774) internal successors, (198), 62 states have internal predecessors, (198), 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 84 [2024-11-16 11:56:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:17,729 INFO L225 Difference]: With dead ends: 728 [2024-11-16 11:56:17,729 INFO L226 Difference]: Without dead ends: 529 [2024-11-16 11:56:17,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=716, Invalid=8214, Unknown=0, NotChecked=0, Total=8930 [2024-11-16 11:56:17,731 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 1031 mSDsluCounter, 5114 mSDsCounter, 0 mSdLazyCounter, 3568 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 5226 SdHoareTripleChecker+Invalid, 3583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:17,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 5226 Invalid, 3583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3568 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 11:56:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-16 11:56:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 419. [2024-11-16 11:56:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.4019138755980862) internal successors, (586), 418 states have internal predecessors, (586), 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) [2024-11-16 11:56:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 586 transitions. [2024-11-16 11:56:17,738 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 586 transitions. Word has length 84 [2024-11-16 11:56:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:17,738 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 586 transitions. [2024-11-16 11:56:17,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.193548387096774) internal successors, (198), 62 states have internal predecessors, (198), 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) [2024-11-16 11:56:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 586 transitions. [2024-11-16 11:56:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 11:56:17,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:17,739 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] [2024-11-16 11:56:17,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 11:56:17,943 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,SelfDestructingSolverStorable17 [2024-11-16 11:56:17,944 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:17,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2138268124, now seen corresponding path program 1 times [2024-11-16 11:56:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:17,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941357374] [2024-11-16 11:56:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941357374] [2024-11-16 11:56:18,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941357374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:18,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:18,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-16 11:56:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365754230] [2024-11-16 11:56:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:18,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 11:56:18,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 11:56:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 11:56:18,800 INFO L87 Difference]: Start difference. First operand 419 states and 586 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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) [2024-11-16 11:56:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:19,103 INFO L93 Difference]: Finished difference Result 852 states and 1208 transitions. [2024-11-16 11:56:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 11:56:19,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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 84 [2024-11-16 11:56:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:19,105 INFO L225 Difference]: With dead ends: 852 [2024-11-16 11:56:19,105 INFO L226 Difference]: Without dead ends: 501 [2024-11-16 11:56:19,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 11:56:19,106 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 67 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:19,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1546 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-16 11:56:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 492. [2024-11-16 11:56:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.3930753564154785) internal successors, (684), 491 states have internal predecessors, (684), 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) [2024-11-16 11:56:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 684 transitions. [2024-11-16 11:56:19,113 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 684 transitions. Word has length 84 [2024-11-16 11:56:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:19,113 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 684 transitions. [2024-11-16 11:56:19,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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) [2024-11-16 11:56:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 684 transitions. [2024-11-16 11:56:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 11:56:19,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:19,114 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] [2024-11-16 11:56:19,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 11:56:19,114 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:19,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash 638537145, now seen corresponding path program 1 times [2024-11-16 11:56:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:19,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070449386] [2024-11-16 11:56:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070449386] [2024-11-16 11:56:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070449386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:19,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 11:56:19,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128941478] [2024-11-16 11:56:19,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:19,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 11:56:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 11:56:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:19,680 INFO L87 Difference]: Start difference. First operand 492 states and 684 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2024-11-16 11:56:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:19,911 INFO L93 Difference]: Finished difference Result 842 states and 1178 transitions. [2024-11-16 11:56:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 11:56:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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 84 [2024-11-16 11:56:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:19,913 INFO L225 Difference]: With dead ends: 842 [2024-11-16 11:56:19,913 INFO L226 Difference]: Without dead ends: 500 [2024-11-16 11:56:19,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-16 11:56:19,914 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 54 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:19,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1174 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-16 11:56:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2024-11-16 11:56:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.3867735470941884) internal successors, (692), 499 states have internal predecessors, (692), 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) [2024-11-16 11:56:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 692 transitions. [2024-11-16 11:56:19,924 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 692 transitions. Word has length 84 [2024-11-16 11:56:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:19,924 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 692 transitions. [2024-11-16 11:56:19,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2024-11-16 11:56:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 692 transitions. [2024-11-16 11:56:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 11:56:19,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:19,926 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] [2024-11-16 11:56:19,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 11:56:19,926 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:19,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash 130067361, now seen corresponding path program 1 times [2024-11-16 11:56:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:19,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117684886] [2024-11-16 11:56:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117684886] [2024-11-16 11:56:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117684886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:20,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:20,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-16 11:56:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481705732] [2024-11-16 11:56:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:20,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 11:56:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 11:56:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-16 11:56:20,642 INFO L87 Difference]: Start difference. First operand 500 states and 692 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2024-11-16 11:56:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:21,182 INFO L93 Difference]: Finished difference Result 846 states and 1174 transitions. [2024-11-16 11:56:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 11:56:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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 85 [2024-11-16 11:56:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:21,184 INFO L225 Difference]: With dead ends: 846 [2024-11-16 11:56:21,184 INFO L226 Difference]: Without dead ends: 502 [2024-11-16 11:56:21,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-16 11:56:21,185 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 124 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:21,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1540 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-16 11:56:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2024-11-16 11:56:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.384) internal successors, (692), 500 states have internal predecessors, (692), 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) [2024-11-16 11:56:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 692 transitions. [2024-11-16 11:56:21,192 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 692 transitions. Word has length 85 [2024-11-16 11:56:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:21,192 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 692 transitions. [2024-11-16 11:56:21,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2024-11-16 11:56:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 692 transitions. [2024-11-16 11:56:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 11:56:21,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:21,193 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] [2024-11-16 11:56:21,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 11:56:21,194 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:21,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1554304137, now seen corresponding path program 1 times [2024-11-16 11:56:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:21,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538081599] [2024-11-16 11:56:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:21,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:21,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:21,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538081599] [2024-11-16 11:56:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538081599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735772015] [2024-11-16 11:56:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:21,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:21,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:21,904 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) [2024-11-16 11:56:21,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 11:56:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:22,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-16 11:56:22,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:22,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:56:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:23,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735772015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:56:23,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:56:23,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 48 [2024-11-16 11:56:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582390564] [2024-11-16 11:56:23,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:56:23,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-16 11:56:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-16 11:56:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2074, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 11:56:23,747 INFO L87 Difference]: Start difference. First operand 501 states and 692 transitions. Second operand has 48 states, 48 states have (on average 4.4375) internal successors, (213), 48 states have internal predecessors, (213), 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) [2024-11-16 11:56:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:25,878 INFO L93 Difference]: Finished difference Result 910 states and 1270 transitions. [2024-11-16 11:56:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-16 11:56:25,879 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.4375) internal successors, (213), 48 states have internal predecessors, (213), 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 85 [2024-11-16 11:56:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:25,881 INFO L225 Difference]: With dead ends: 910 [2024-11-16 11:56:25,882 INFO L226 Difference]: Without dead ends: 699 [2024-11-16 11:56:25,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=502, Invalid=5198, Unknown=0, NotChecked=0, Total=5700 [2024-11-16 11:56:25,883 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 514 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:25,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 3747 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 11:56:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-16 11:56:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 616. [2024-11-16 11:56:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.3869918699186992) internal successors, (853), 615 states have internal predecessors, (853), 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) [2024-11-16 11:56:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 853 transitions. [2024-11-16 11:56:25,892 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 853 transitions. Word has length 85 [2024-11-16 11:56:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:25,892 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 853 transitions. [2024-11-16 11:56:25,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.4375) internal successors, (213), 48 states have internal predecessors, (213), 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) [2024-11-16 11:56:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 853 transitions. [2024-11-16 11:56:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 11:56:25,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:25,893 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:56:25,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 11:56:26,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:26,094 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:26,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:26,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1065852287, now seen corresponding path program 1 times [2024-11-16 11:56:26,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:26,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086252357] [2024-11-16 11:56:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:26,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:26,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:26,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086252357] [2024-11-16 11:56:26,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086252357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:26,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165117903] [2024-11-16 11:56:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:26,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:26,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:26,434 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) [2024-11-16 11:56:26,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 11:56:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:26,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 11:56:26,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 11:56:26,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:56:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:27,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165117903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:56:27,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:56:27,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 13] total 23 [2024-11-16 11:56:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5802798] [2024-11-16 11:56:27,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:56:27,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 11:56:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 11:56:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-11-16 11:56:27,284 INFO L87 Difference]: Start difference. First operand 616 states and 853 transitions. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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) [2024-11-16 11:56:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:27,680 INFO L93 Difference]: Finished difference Result 1770 states and 2463 transitions. [2024-11-16 11:56:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 11:56:27,680 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 85 [2024-11-16 11:56:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:27,684 INFO L225 Difference]: With dead ends: 1770 [2024-11-16 11:56:27,684 INFO L226 Difference]: Without dead ends: 1200 [2024-11-16 11:56:27,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 153 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2024-11-16 11:56:27,685 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 453 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:27,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2076 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2024-11-16 11:56:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1153. [2024-11-16 11:56:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.3845486111111112) internal successors, (1595), 1152 states have internal predecessors, (1595), 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) [2024-11-16 11:56:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1595 transitions. [2024-11-16 11:56:27,700 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1595 transitions. Word has length 85 [2024-11-16 11:56:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:27,701 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1595 transitions. [2024-11-16 11:56:27,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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) [2024-11-16 11:56:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1595 transitions. [2024-11-16 11:56:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 11:56:27,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:27,703 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] [2024-11-16 11:56:27,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 11:56:27,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:27,904 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:27,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1063601400, now seen corresponding path program 1 times [2024-11-16 11:56:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:27,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225785899] [2024-11-16 11:56:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:27,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:28,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225785899] [2024-11-16 11:56:28,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225785899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:28,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:28,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038295522] [2024-11-16 11:56:28,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:28,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:28,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:28,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:28,031 INFO L87 Difference]: Start difference. First operand 1153 states and 1595 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-16 11:56:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:28,111 INFO L93 Difference]: Finished difference Result 1814 states and 2513 transitions. [2024-11-16 11:56:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2024-11-16 11:56:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:28,115 INFO L225 Difference]: With dead ends: 1814 [2024-11-16 11:56:28,115 INFO L226 Difference]: Without dead ends: 1127 [2024-11-16 11:56:28,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:28,117 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 50 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:28,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 550 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2024-11-16 11:56:28,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2024-11-16 11:56:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.3703374777975132) internal successors, (1543), 1126 states have internal predecessors, (1543), 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) [2024-11-16 11:56:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1543 transitions. [2024-11-16 11:56:28,133 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1543 transitions. Word has length 85 [2024-11-16 11:56:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:28,134 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1543 transitions. [2024-11-16 11:56:28,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-16 11:56:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1543 transitions. [2024-11-16 11:56:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 11:56:28,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:28,135 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] [2024-11-16 11:56:28,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-16 11:56:28,136 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:28,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1430274232, now seen corresponding path program 1 times [2024-11-16 11:56:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796443717] [2024-11-16 11:56:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796443717] [2024-11-16 11:56:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796443717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:28,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:28,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-16 11:56:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519157647] [2024-11-16 11:56:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:28,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 11:56:28,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 11:56:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-16 11:56:28,926 INFO L87 Difference]: Start difference. First operand 1127 states and 1543 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2024-11-16 11:56:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:29,396 INFO L93 Difference]: Finished difference Result 1624 states and 2238 transitions. [2024-11-16 11:56:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 11:56:29,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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 85 [2024-11-16 11:56:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:29,402 INFO L225 Difference]: With dead ends: 1624 [2024-11-16 11:56:29,402 INFO L226 Difference]: Without dead ends: 1191 [2024-11-16 11:56:29,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-11-16 11:56:29,410 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:29,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1674 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2024-11-16 11:56:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1131. [2024-11-16 11:56:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.370796460176991) internal successors, (1549), 1130 states have internal predecessors, (1549), 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) [2024-11-16 11:56:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1549 transitions. [2024-11-16 11:56:29,430 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1549 transitions. Word has length 85 [2024-11-16 11:56:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:29,430 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1549 transitions. [2024-11-16 11:56:29,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2024-11-16 11:56:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1549 transitions. [2024-11-16 11:56:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 11:56:29,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:29,432 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:56:29,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-16 11:56:29,432 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:29,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2146059104, now seen corresponding path program 1 times [2024-11-16 11:56:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:29,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392399711] [2024-11-16 11:56:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:29,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:29,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392399711] [2024-11-16 11:56:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392399711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:29,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:29,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241351764] [2024-11-16 11:56:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:29,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:29,666 INFO L87 Difference]: Start difference. First operand 1131 states and 1549 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2024-11-16 11:56:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:29,877 INFO L93 Difference]: Finished difference Result 2262 states and 3103 transitions. [2024-11-16 11:56:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 86 [2024-11-16 11:56:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:29,881 INFO L225 Difference]: With dead ends: 2262 [2024-11-16 11:56:29,881 INFO L226 Difference]: Without dead ends: 1169 [2024-11-16 11:56:29,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:29,887 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 9 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:29,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 856 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-16 11:56:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1166. [2024-11-16 11:56:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 1.3690987124463518) internal successors, (1595), 1165 states have internal predecessors, (1595), 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) [2024-11-16 11:56:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1595 transitions. [2024-11-16 11:56:29,923 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1595 transitions. Word has length 86 [2024-11-16 11:56:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:29,923 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1595 transitions. [2024-11-16 11:56:29,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2024-11-16 11:56:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1595 transitions. [2024-11-16 11:56:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 11:56:29,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:29,925 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] [2024-11-16 11:56:29,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-16 11:56:29,925 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:29,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1987501765, now seen corresponding path program 1 times [2024-11-16 11:56:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:29,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184696364] [2024-11-16 11:56:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:29,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184696364] [2024-11-16 11:56:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184696364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:30,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:30,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 11:56:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935077037] [2024-11-16 11:56:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:30,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 11:56:30,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 11:56:30,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:56:30,667 INFO L87 Difference]: Start difference. First operand 1166 states and 1595 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-11-16 11:56:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:30,815 INFO L93 Difference]: Finished difference Result 1779 states and 2441 transitions. [2024-11-16 11:56:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:56:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 86 [2024-11-16 11:56:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:30,818 INFO L225 Difference]: With dead ends: 1779 [2024-11-16 11:56:30,819 INFO L226 Difference]: Without dead ends: 1178 [2024-11-16 11:56:30,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:56:30,821 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 7 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:30,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 987 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2024-11-16 11:56:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2024-11-16 11:56:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.367659574468085) internal successors, (1607), 1175 states have internal predecessors, (1607), 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) [2024-11-16 11:56:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1607 transitions. [2024-11-16 11:56:30,837 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1607 transitions. Word has length 86 [2024-11-16 11:56:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:30,837 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1607 transitions. [2024-11-16 11:56:30,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-11-16 11:56:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1607 transitions. [2024-11-16 11:56:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 11:56:30,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:30,857 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] [2024-11-16 11:56:30,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-16 11:56:30,858 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:30,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash 603041533, now seen corresponding path program 1 times [2024-11-16 11:56:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:30,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407663484] [2024-11-16 11:56:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:31,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:31,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407663484] [2024-11-16 11:56:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407663484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:31,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-16 11:56:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102065885] [2024-11-16 11:56:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:31,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 11:56:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 11:56:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-16 11:56:31,717 INFO L87 Difference]: Start difference. First operand 1176 states and 1607 transitions. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 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) [2024-11-16 11:56:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:32,503 INFO L93 Difference]: Finished difference Result 1787 states and 2461 transitions. [2024-11-16 11:56:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 11:56:32,504 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 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 86 [2024-11-16 11:56:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:32,507 INFO L225 Difference]: With dead ends: 1787 [2024-11-16 11:56:32,507 INFO L226 Difference]: Without dead ends: 1256 [2024-11-16 11:56:32,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 11:56:32,508 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 168 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:32,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2202 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2024-11-16 11:56:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1196. [2024-11-16 11:56:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 1.3715481171548116) internal successors, (1639), 1195 states have internal predecessors, (1639), 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) [2024-11-16 11:56:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1639 transitions. [2024-11-16 11:56:32,523 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1639 transitions. Word has length 86 [2024-11-16 11:56:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:32,523 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1639 transitions. [2024-11-16 11:56:32,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 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) [2024-11-16 11:56:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1639 transitions. [2024-11-16 11:56:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 11:56:32,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:32,524 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] [2024-11-16 11:56:32,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-16 11:56:32,525 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:32,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash -847140851, now seen corresponding path program 1 times [2024-11-16 11:56:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113434844] [2024-11-16 11:56:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:32,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:32,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:32,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113434844] [2024-11-16 11:56:32,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113434844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:32,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:32,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619245488] [2024-11-16 11:56:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:32,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:32,636 INFO L87 Difference]: Start difference. First operand 1196 states and 1639 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-11-16 11:56:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:32,714 INFO L93 Difference]: Finished difference Result 1978 states and 2726 transitions. [2024-11-16 11:56:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:32,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2024-11-16 11:56:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:32,718 INFO L225 Difference]: With dead ends: 1978 [2024-11-16 11:56:32,718 INFO L226 Difference]: Without dead ends: 1106 [2024-11-16 11:56:32,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:32,719 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 43 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:32,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 559 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-16 11:56:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2024-11-16 11:56:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.358371040723982) internal successors, (1501), 1105 states have internal predecessors, (1501), 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) [2024-11-16 11:56:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1501 transitions. [2024-11-16 11:56:32,733 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1501 transitions. Word has length 86 [2024-11-16 11:56:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:32,733 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1501 transitions. [2024-11-16 11:56:32,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-11-16 11:56:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1501 transitions. [2024-11-16 11:56:32,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 11:56:32,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:32,735 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] [2024-11-16 11:56:32,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-16 11:56:32,735 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:32,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1567835278, now seen corresponding path program 1 times [2024-11-16 11:56:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:32,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151925499] [2024-11-16 11:56:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151925499] [2024-11-16 11:56:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151925499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-16 11:56:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409113990] [2024-11-16 11:56:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:33,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 11:56:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 11:56:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-16 11:56:33,335 INFO L87 Difference]: Start difference. First operand 1106 states and 1501 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 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) [2024-11-16 11:56:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:33,646 INFO L93 Difference]: Finished difference Result 1727 states and 2360 transitions. [2024-11-16 11:56:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 11:56:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 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 86 [2024-11-16 11:56:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:33,649 INFO L225 Difference]: With dead ends: 1727 [2024-11-16 11:56:33,649 INFO L226 Difference]: Without dead ends: 1112 [2024-11-16 11:56:33,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-16 11:56:33,652 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 52 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:33,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1658 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-16 11:56:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1104. [2024-11-16 11:56:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1103 states have (on average 1.3535811423390753) internal successors, (1493), 1103 states have internal predecessors, (1493), 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) [2024-11-16 11:56:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1493 transitions. [2024-11-16 11:56:33,665 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1493 transitions. Word has length 86 [2024-11-16 11:56:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:33,665 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1493 transitions. [2024-11-16 11:56:33,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 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) [2024-11-16 11:56:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1493 transitions. [2024-11-16 11:56:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 11:56:33,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:33,667 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] [2024-11-16 11:56:33,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-16 11:56:33,667 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:33,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1926070024, now seen corresponding path program 1 times [2024-11-16 11:56:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045167351] [2024-11-16 11:56:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:33,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045167351] [2024-11-16 11:56:34,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045167351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:34,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:34,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-16 11:56:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884828041] [2024-11-16 11:56:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:34,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 11:56:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 11:56:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:56:34,106 INFO L87 Difference]: Start difference. First operand 1104 states and 1493 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-11-16 11:56:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:34,643 INFO L93 Difference]: Finished difference Result 1580 states and 2155 transitions. [2024-11-16 11:56:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 11:56:34,643 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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 87 [2024-11-16 11:56:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:34,646 INFO L225 Difference]: With dead ends: 1580 [2024-11-16 11:56:34,646 INFO L226 Difference]: Without dead ends: 1098 [2024-11-16 11:56:34,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2024-11-16 11:56:34,647 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 134 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:34,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1772 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:34,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-16 11:56:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2024-11-16 11:56:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.350045578851413) internal successors, (1481), 1097 states have internal predecessors, (1481), 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) [2024-11-16 11:56:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1481 transitions. [2024-11-16 11:56:34,659 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1481 transitions. Word has length 87 [2024-11-16 11:56:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:34,660 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1481 transitions. [2024-11-16 11:56:34,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-11-16 11:56:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1481 transitions. [2024-11-16 11:56:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 11:56:34,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:34,661 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] [2024-11-16 11:56:34,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-16 11:56:34,661 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:34,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:34,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1406585501, now seen corresponding path program 1 times [2024-11-16 11:56:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:34,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363529048] [2024-11-16 11:56:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:34,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363529048] [2024-11-16 11:56:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363529048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:35,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:35,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-16 11:56:35,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588443255] [2024-11-16 11:56:35,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:35,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 11:56:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 11:56:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-16 11:56:35,370 INFO L87 Difference]: Start difference. First operand 1098 states and 1481 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 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) [2024-11-16 11:56:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:35,855 INFO L93 Difference]: Finished difference Result 1574 states and 2143 transitions. [2024-11-16 11:56:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 11:56:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 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 87 [2024-11-16 11:56:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:35,858 INFO L225 Difference]: With dead ends: 1574 [2024-11-16 11:56:35,858 INFO L226 Difference]: Without dead ends: 1064 [2024-11-16 11:56:35,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-11-16 11:56:35,859 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 106 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:35,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1520 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2024-11-16 11:56:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1064. [2024-11-16 11:56:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.348071495766698) internal successors, (1433), 1063 states have internal predecessors, (1433), 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) [2024-11-16 11:56:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1433 transitions. [2024-11-16 11:56:35,872 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1433 transitions. Word has length 87 [2024-11-16 11:56:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:35,872 INFO L471 AbstractCegarLoop]: Abstraction has 1064 states and 1433 transitions. [2024-11-16 11:56:35,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 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) [2024-11-16 11:56:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1433 transitions. [2024-11-16 11:56:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 11:56:35,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:35,874 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] [2024-11-16 11:56:35,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-16 11:56:35,874 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:35,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:35,874 INFO L85 PathProgramCache]: Analyzing trace with hash -210204321, now seen corresponding path program 1 times [2024-11-16 11:56:35,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:35,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775065115] [2024-11-16 11:56:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:35,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:36,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:36,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775065115] [2024-11-16 11:56:36,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775065115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:36,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:36,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-16 11:56:36,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232111308] [2024-11-16 11:56:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:36,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 11:56:36,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 11:56:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-16 11:56:36,458 INFO L87 Difference]: Start difference. First operand 1064 states and 1433 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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) [2024-11-16 11:56:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:36,794 INFO L93 Difference]: Finished difference Result 1749 states and 2389 transitions. [2024-11-16 11:56:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 11:56:36,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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 87 [2024-11-16 11:56:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:36,797 INFO L225 Difference]: With dead ends: 1749 [2024-11-16 11:56:36,797 INFO L226 Difference]: Without dead ends: 1226 [2024-11-16 11:56:36,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-16 11:56:36,798 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 40 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:36,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1982 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2024-11-16 11:56:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1194. [2024-11-16 11:56:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1193 states have (on average 1.3503772003352892) internal successors, (1611), 1193 states have internal predecessors, (1611), 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) [2024-11-16 11:56:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1611 transitions. [2024-11-16 11:56:36,813 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1611 transitions. Word has length 87 [2024-11-16 11:56:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:36,813 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1611 transitions. [2024-11-16 11:56:36,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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) [2024-11-16 11:56:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1611 transitions. [2024-11-16 11:56:36,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 11:56:36,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:36,814 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] [2024-11-16 11:56:36,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-16 11:56:36,815 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:36,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:36,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1975488133, now seen corresponding path program 1 times [2024-11-16 11:56:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797294091] [2024-11-16 11:56:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:46,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:46,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797294091] [2024-11-16 11:56:46,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797294091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:46,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091113054] [2024-11-16 11:56:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:46,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:46,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:46,896 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) [2024-11-16 11:56:46,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 11:56:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:47,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-16 11:56:47,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:47,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:56:47,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091113054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:47,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:56:47,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [12] total 31 [2024-11-16 11:56:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017063337] [2024-11-16 11:56:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:47,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 11:56:47,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 11:56:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2024-11-16 11:56:47,720 INFO L87 Difference]: Start difference. First operand 1194 states and 1611 transitions. Second operand has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 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) [2024-11-16 11:56:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:48,212 INFO L93 Difference]: Finished difference Result 1976 states and 2684 transitions. [2024-11-16 11:56:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 11:56:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 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 87 [2024-11-16 11:56:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:48,216 INFO L225 Difference]: With dead ends: 1976 [2024-11-16 11:56:48,216 INFO L226 Difference]: Without dead ends: 1306 [2024-11-16 11:56:48,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2024-11-16 11:56:48,219 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 62 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:48,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2133 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2024-11-16 11:56:48,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1260. [2024-11-16 11:56:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 1.346306592533757) internal successors, (1695), 1259 states have internal predecessors, (1695), 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) [2024-11-16 11:56:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1695 transitions. [2024-11-16 11:56:48,239 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1695 transitions. Word has length 87 [2024-11-16 11:56:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:48,239 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1695 transitions. [2024-11-16 11:56:48,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 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) [2024-11-16 11:56:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1695 transitions. [2024-11-16 11:56:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 11:56:48,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:48,241 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:56:48,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 11:56:48,441 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,SelfDestructingSolverStorable33 [2024-11-16 11:56:48,442 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:48,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1420549897, now seen corresponding path program 1 times [2024-11-16 11:56:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077639173] [2024-11-16 11:56:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:48,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:48,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077639173] [2024-11-16 11:56:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077639173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978502022] [2024-11-16 11:56:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:48,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:48,552 INFO L87 Difference]: Start difference. First operand 1260 states and 1695 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-16 11:56:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:48,634 INFO L93 Difference]: Finished difference Result 2473 states and 3330 transitions. [2024-11-16 11:56:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 87 [2024-11-16 11:56:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:48,638 INFO L225 Difference]: With dead ends: 2473 [2024-11-16 11:56:48,638 INFO L226 Difference]: Without dead ends: 1255 [2024-11-16 11:56:48,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:48,639 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 74 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:48,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 550 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-16 11:56:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2024-11-16 11:56:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.3444976076555024) internal successors, (1686), 1254 states have internal predecessors, (1686), 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) [2024-11-16 11:56:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1686 transitions. [2024-11-16 11:56:48,653 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1686 transitions. Word has length 87 [2024-11-16 11:56:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:48,653 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1686 transitions. [2024-11-16 11:56:48,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-16 11:56:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1686 transitions. [2024-11-16 11:56:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:48,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:48,655 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] [2024-11-16 11:56:48,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-16 11:56:48,656 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:48,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash 547940495, now seen corresponding path program 1 times [2024-11-16 11:56:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:48,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871151333] [2024-11-16 11:56:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:48,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871151333] [2024-11-16 11:56:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871151333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:48,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040194400] [2024-11-16 11:56:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:48,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:48,853 INFO L87 Difference]: Start difference. First operand 1255 states and 1686 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2024-11-16 11:56:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:48,971 INFO L93 Difference]: Finished difference Result 2525 states and 3417 transitions. [2024-11-16 11:56:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:48,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:48,975 INFO L225 Difference]: With dead ends: 2525 [2024-11-16 11:56:48,975 INFO L226 Difference]: Without dead ends: 1603 [2024-11-16 11:56:48,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:48,977 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 10 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:48,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 856 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2024-11-16 11:56:48,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1565. [2024-11-16 11:56:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.3222506393861893) internal successors, (2068), 1564 states have internal predecessors, (2068), 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) [2024-11-16 11:56:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2068 transitions. [2024-11-16 11:56:48,991 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2068 transitions. Word has length 88 [2024-11-16 11:56:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:48,992 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2068 transitions. [2024-11-16 11:56:48,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2024-11-16 11:56:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2068 transitions. [2024-11-16 11:56:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:48,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:48,993 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] [2024-11-16 11:56:48,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-16 11:56:48,994 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:48,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 774373962, now seen corresponding path program 1 times [2024-11-16 11:56:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707109772] [2024-11-16 11:56:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707109772] [2024-11-16 11:56:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707109772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:49,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 11:56:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789357829] [2024-11-16 11:56:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:49,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 11:56:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 11:56:49,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:56:49,443 INFO L87 Difference]: Start difference. First operand 1565 states and 2068 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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) [2024-11-16 11:56:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:49,580 INFO L93 Difference]: Finished difference Result 2381 states and 3206 transitions. [2024-11-16 11:56:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:49,584 INFO L225 Difference]: With dead ends: 2381 [2024-11-16 11:56:49,584 INFO L226 Difference]: Without dead ends: 1665 [2024-11-16 11:56:49,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:56:49,585 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 25 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:49,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 856 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-11-16 11:56:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2024-11-16 11:56:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.3245192307692308) internal successors, (2204), 1664 states have internal predecessors, (2204), 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) [2024-11-16 11:56:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2204 transitions. [2024-11-16 11:56:49,599 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2204 transitions. Word has length 88 [2024-11-16 11:56:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:49,599 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2204 transitions. [2024-11-16 11:56:49,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 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) [2024-11-16 11:56:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2204 transitions. [2024-11-16 11:56:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:49,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:49,601 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] [2024-11-16 11:56:49,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-16 11:56:49,601 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:49,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1541251357, now seen corresponding path program 1 times [2024-11-16 11:56:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:49,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524213302] [2024-11-16 11:56:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:49,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:50,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:50,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524213302] [2024-11-16 11:56:50,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524213302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:50,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226259670] [2024-11-16 11:56:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:50,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:50,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:50,609 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) [2024-11-16 11:56:50,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 11:56:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:50,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 11:56:50,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:51,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:56:51,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226259670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:51,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:56:51,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2024-11-16 11:56:51,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199211442] [2024-11-16 11:56:51,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:51,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:56:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:51,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:56:51,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2024-11-16 11:56:51,220 INFO L87 Difference]: Start difference. First operand 1665 states and 2204 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2024-11-16 11:56:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:51,446 INFO L93 Difference]: Finished difference Result 2529 states and 3402 transitions. [2024-11-16 11:56:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 11:56:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:51,450 INFO L225 Difference]: With dead ends: 2529 [2024-11-16 11:56:51,450 INFO L226 Difference]: Without dead ends: 1749 [2024-11-16 11:56:51,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2024-11-16 11:56:51,451 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 75 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:51,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1313 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2024-11-16 11:56:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1733. [2024-11-16 11:56:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.3233256351039262) internal successors, (2292), 1732 states have internal predecessors, (2292), 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) [2024-11-16 11:56:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2292 transitions. [2024-11-16 11:56:51,467 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2292 transitions. Word has length 88 [2024-11-16 11:56:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:51,467 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2292 transitions. [2024-11-16 11:56:51,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2024-11-16 11:56:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2292 transitions. [2024-11-16 11:56:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:51,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:51,469 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] [2024-11-16 11:56:51,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 11:56:51,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-16 11:56:51,670 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:51,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -847403199, now seen corresponding path program 1 times [2024-11-16 11:56:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286618549] [2024-11-16 11:56:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:52,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286618549] [2024-11-16 11:56:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286618549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:52,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-16 11:56:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647552098] [2024-11-16 11:56:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:52,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 11:56:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 11:56:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-16 11:56:52,627 INFO L87 Difference]: Start difference. First operand 1733 states and 2292 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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) [2024-11-16 11:56:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:53,000 INFO L93 Difference]: Finished difference Result 2559 states and 3442 transitions. [2024-11-16 11:56:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 11:56:53,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:53,004 INFO L225 Difference]: With dead ends: 2559 [2024-11-16 11:56:53,004 INFO L226 Difference]: Without dead ends: 1723 [2024-11-16 11:56:53,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-16 11:56:53,005 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 42 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:53,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1723 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2024-11-16 11:56:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1675. [2024-11-16 11:56:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.3249701314217444) internal successors, (2218), 1674 states have internal predecessors, (2218), 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) [2024-11-16 11:56:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2218 transitions. [2024-11-16 11:56:53,019 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2218 transitions. Word has length 88 [2024-11-16 11:56:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:53,020 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 2218 transitions. [2024-11-16 11:56:53,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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) [2024-11-16 11:56:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2218 transitions. [2024-11-16 11:56:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:53,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:53,022 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] [2024-11-16 11:56:53,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-16 11:56:53,022 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:53,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1986762090, now seen corresponding path program 1 times [2024-11-16 11:56:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:53,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773536424] [2024-11-16 11:56:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:54,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773536424] [2024-11-16 11:56:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773536424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:54,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:54,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-16 11:56:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28168186] [2024-11-16 11:56:54,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:54,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 11:56:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 11:56:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2024-11-16 11:56:54,256 INFO L87 Difference]: Start difference. First operand 1675 states and 2218 transitions. Second operand has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 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) [2024-11-16 11:56:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:55,202 INFO L93 Difference]: Finished difference Result 2906 states and 3929 transitions. [2024-11-16 11:56:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 11:56:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:55,206 INFO L225 Difference]: With dead ends: 2906 [2024-11-16 11:56:55,206 INFO L226 Difference]: Without dead ends: 2109 [2024-11-16 11:56:55,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2024-11-16 11:56:55,207 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 44 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:55,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3235 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 11:56:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2024-11-16 11:56:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2073. [2024-11-16 11:56:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 1.3325289575289576) internal successors, (2761), 2072 states have internal predecessors, (2761), 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) [2024-11-16 11:56:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2761 transitions. [2024-11-16 11:56:55,224 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2761 transitions. Word has length 88 [2024-11-16 11:56:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:55,224 INFO L471 AbstractCegarLoop]: Abstraction has 2073 states and 2761 transitions. [2024-11-16 11:56:55,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 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) [2024-11-16 11:56:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2761 transitions. [2024-11-16 11:56:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:55,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:55,226 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] [2024-11-16 11:56:55,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-16 11:56:55,226 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:55,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1595055493, now seen corresponding path program 1 times [2024-11-16 11:56:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149283822] [2024-11-16 11:56:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149283822] [2024-11-16 11:56:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149283822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:55,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:55,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 11:56:55,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144809468] [2024-11-16 11:56:55,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:55,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:56:55,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:56:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:55,654 INFO L87 Difference]: Start difference. First operand 2073 states and 2761 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2024-11-16 11:56:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:55,850 INFO L93 Difference]: Finished difference Result 3304 states and 4488 transitions. [2024-11-16 11:56:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 11:56:55,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:55,854 INFO L225 Difference]: With dead ends: 3304 [2024-11-16 11:56:55,854 INFO L226 Difference]: Without dead ends: 2251 [2024-11-16 11:56:55,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-16 11:56:55,855 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 119 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:55,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 773 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2024-11-16 11:56:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2173. [2024-11-16 11:56:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.337476979742173) internal successors, (2905), 2172 states have internal predecessors, (2905), 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) [2024-11-16 11:56:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2905 transitions. [2024-11-16 11:56:55,873 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2905 transitions. Word has length 88 [2024-11-16 11:56:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:55,873 INFO L471 AbstractCegarLoop]: Abstraction has 2173 states and 2905 transitions. [2024-11-16 11:56:55,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2024-11-16 11:56:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2905 transitions. [2024-11-16 11:56:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:55,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:55,875 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] [2024-11-16 11:56:55,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-16 11:56:55,875 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:55,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1983694161, now seen corresponding path program 1 times [2024-11-16 11:56:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125135500] [2024-11-16 11:56:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125135500] [2024-11-16 11:56:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125135500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:56,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-16 11:56:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788950235] [2024-11-16 11:56:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:56,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 11:56:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 11:56:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:56:56,270 INFO L87 Difference]: Start difference. First operand 2173 states and 2905 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 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) [2024-11-16 11:56:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:56,687 INFO L93 Difference]: Finished difference Result 3441 states and 4669 transitions. [2024-11-16 11:56:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 11:56:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:56,690 INFO L225 Difference]: With dead ends: 3441 [2024-11-16 11:56:56,690 INFO L226 Difference]: Without dead ends: 2173 [2024-11-16 11:56:56,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-16 11:56:56,692 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 78 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:56,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1634 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2024-11-16 11:56:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2173. [2024-11-16 11:56:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.3365561694290975) internal successors, (2903), 2172 states have internal predecessors, (2903), 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) [2024-11-16 11:56:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2903 transitions. [2024-11-16 11:56:56,707 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2903 transitions. Word has length 88 [2024-11-16 11:56:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:56,707 INFO L471 AbstractCegarLoop]: Abstraction has 2173 states and 2903 transitions. [2024-11-16 11:56:56,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 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) [2024-11-16 11:56:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2903 transitions. [2024-11-16 11:56:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:56,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:56,709 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] [2024-11-16 11:56:56,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-16 11:56:56,709 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:56,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:56,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1758811555, now seen corresponding path program 1 times [2024-11-16 11:56:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:56,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665435280] [2024-11-16 11:56:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:57,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665435280] [2024-11-16 11:56:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665435280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:57,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180828944] [2024-11-16 11:56:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:57,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:57,759 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) [2024-11-16 11:56:57,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 11:56:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:58,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-16 11:56:58,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:59,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:57:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:00,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180828944] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 11:57:00,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 11:57:00,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [27, 30] total 79 [2024-11-16 11:57:00,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754736950] [2024-11-16 11:57:00,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:57:00,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 11:57:00,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 11:57:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=5855, Unknown=0, NotChecked=0, Total=6162 [2024-11-16 11:57:00,708 INFO L87 Difference]: Start difference. First operand 2173 states and 2903 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 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) [2024-11-16 11:57:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:02,293 INFO L93 Difference]: Finished difference Result 3940 states and 5381 transitions. [2024-11-16 11:57:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 11:57:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 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 88 [2024-11-16 11:57:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:02,297 INFO L225 Difference]: With dead ends: 3940 [2024-11-16 11:57:02,297 INFO L226 Difference]: Without dead ends: 2780 [2024-11-16 11:57:02,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=376, Invalid=6934, Unknown=0, NotChecked=0, Total=7310 [2024-11-16 11:57:02,299 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 176 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:02,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 3187 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 11:57:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2024-11-16 11:57:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2575. [2024-11-16 11:57:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 2574 states have (on average 1.3543123543123543) internal successors, (3486), 2574 states have internal predecessors, (3486), 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) [2024-11-16 11:57:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3486 transitions. [2024-11-16 11:57:02,319 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3486 transitions. Word has length 88 [2024-11-16 11:57:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:02,319 INFO L471 AbstractCegarLoop]: Abstraction has 2575 states and 3486 transitions. [2024-11-16 11:57:02,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 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) [2024-11-16 11:57:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3486 transitions. [2024-11-16 11:57:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:57:02,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:02,321 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] [2024-11-16 11:57:02,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 11:57:02,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:57:02,525 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:02,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash 135130248, now seen corresponding path program 1 times [2024-11-16 11:57:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:02,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997572820] [2024-11-16 11:57:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:02,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:57:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997572820] [2024-11-16 11:57:02,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997572820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:57:02,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:57:02,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 11:57:02,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108012706] [2024-11-16 11:57:02,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:57:02,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 11:57:02,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 11:57:02,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:57:02,850 INFO L87 Difference]: Start difference. First operand 2575 states and 3486 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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) [2024-11-16 11:57:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:03,047 INFO L93 Difference]: Finished difference Result 4126 states and 5687 transitions. [2024-11-16 11:57:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 11:57:03,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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 88 [2024-11-16 11:57:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:03,051 INFO L225 Difference]: With dead ends: 4126 [2024-11-16 11:57:03,051 INFO L226 Difference]: Without dead ends: 2588 [2024-11-16 11:57:03,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-16 11:57:03,052 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 39 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:03,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1247 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:57:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2024-11-16 11:57:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2586. [2024-11-16 11:57:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2585 states have (on average 1.3528046421663442) internal successors, (3497), 2585 states have internal predecessors, (3497), 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) [2024-11-16 11:57:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3497 transitions. [2024-11-16 11:57:03,070 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3497 transitions. Word has length 88 [2024-11-16 11:57:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:03,070 INFO L471 AbstractCegarLoop]: Abstraction has 2586 states and 3497 transitions. [2024-11-16 11:57:03,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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) [2024-11-16 11:57:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3497 transitions. [2024-11-16 11:57:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:57:03,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:03,072 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 11:57:03,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-16 11:57:03,072 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:03,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 202582276, now seen corresponding path program 1 times [2024-11-16 11:57:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622591241] [2024-11-16 11:57:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:03,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:57:03,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622591241] [2024-11-16 11:57:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622591241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:57:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873427299] [2024-11-16 11:57:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:03,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:57:03,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:57:03,688 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) [2024-11-16 11:57:03,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 11:57:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:03,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-16 11:57:03,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:57:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:04,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:57:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873427299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:57:05,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:57:05,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 23] total 61 [2024-11-16 11:57:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712606962] [2024-11-16 11:57:05,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:57:05,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 11:57:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 11:57:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=3344, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 11:57:05,947 INFO L87 Difference]: Start difference. First operand 2586 states and 3497 transitions. Second operand has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 states have internal predecessors, (240), 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) [2024-11-16 11:57:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:10,149 INFO L93 Difference]: Finished difference Result 6217 states and 8616 transitions. [2024-11-16 11:57:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-16 11:57:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 states have internal predecessors, (240), 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 88 [2024-11-16 11:57:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:10,155 INFO L225 Difference]: With dead ends: 6217 [2024-11-16 11:57:10,155 INFO L226 Difference]: Without dead ends: 4671 [2024-11-16 11:57:10,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1303, Invalid=12037, Unknown=0, NotChecked=0, Total=13340 [2024-11-16 11:57:10,158 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 983 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 3886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:10,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 4935 Invalid, 3886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 11:57:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2024-11-16 11:57:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 3098. [2024-11-16 11:57:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3097 states have (on average 1.36648369389732) internal successors, (4232), 3097 states have internal predecessors, (4232), 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) [2024-11-16 11:57:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4232 transitions. [2024-11-16 11:57:10,191 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4232 transitions. Word has length 88 [2024-11-16 11:57:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:10,191 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 4232 transitions. [2024-11-16 11:57:10,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 states have internal predecessors, (240), 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) [2024-11-16 11:57:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4232 transitions. [2024-11-16 11:57:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 11:57:10,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:10,194 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] [2024-11-16 11:57:10,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 11:57:10,397 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,SelfDestructingSolverStorable44 [2024-11-16 11:57:10,398 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:10,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -922003859, now seen corresponding path program 1 times [2024-11-16 11:57:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510214814] [2024-11-16 11:57:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:57:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510214814] [2024-11-16 11:57:10,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510214814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:57:10,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:57:10,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:57:10,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393033444] [2024-11-16 11:57:10,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:57:10,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:57:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:10,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:57:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:57:10,520 INFO L87 Difference]: Start difference. First operand 3098 states and 4232 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) [2024-11-16 11:57:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:10,684 INFO L93 Difference]: Finished difference Result 5679 states and 7803 transitions. [2024-11-16 11:57:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:57:10,686 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 [2024-11-16 11:57:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:10,689 INFO L225 Difference]: With dead ends: 5679 [2024-11-16 11:57:10,689 INFO L226 Difference]: Without dead ends: 3008 [2024-11-16 11:57:10,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:57:10,692 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 40 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:10,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 550 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:57:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2024-11-16 11:57:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2024-11-16 11:57:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3535084802128368) internal successors, (4070), 3007 states have internal predecessors, (4070), 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) [2024-11-16 11:57:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4070 transitions. [2024-11-16 11:57:10,716 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4070 transitions. Word has length 89 [2024-11-16 11:57:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:10,716 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4070 transitions. [2024-11-16 11:57:10,716 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) [2024-11-16 11:57:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4070 transitions. [2024-11-16 11:57:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 11:57:10,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:10,719 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] [2024-11-16 11:57:10,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-16 11:57:10,720 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:10,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash 320327122, now seen corresponding path program 1 times [2024-11-16 11:57:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:10,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727120787] [2024-11-16 11:57:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:10,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:11,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:57:11,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727120787] [2024-11-16 11:57:11,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727120787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:57:11,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:57:11,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 11:57:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881709048] [2024-11-16 11:57:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:57:11,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 11:57:11,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 11:57:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:57:11,063 INFO L87 Difference]: Start difference. First operand 3008 states and 4070 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 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) [2024-11-16 11:57:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:11,276 INFO L93 Difference]: Finished difference Result 4837 states and 6650 transitions. [2024-11-16 11:57:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 11:57:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 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 [2024-11-16 11:57:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:11,281 INFO L225 Difference]: With dead ends: 4837 [2024-11-16 11:57:11,281 INFO L226 Difference]: Without dead ends: 3192 [2024-11-16 11:57:11,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:57:11,284 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 95 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:11,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1141 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:57:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2024-11-16 11:57:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3112. [2024-11-16 11:57:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 3111 states have (on average 1.352619736419158) internal successors, (4208), 3111 states have internal predecessors, (4208), 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) [2024-11-16 11:57:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4208 transitions. [2024-11-16 11:57:11,308 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4208 transitions. Word has length 89 [2024-11-16 11:57:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:11,309 INFO L471 AbstractCegarLoop]: Abstraction has 3112 states and 4208 transitions. [2024-11-16 11:57:11,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 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) [2024-11-16 11:57:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4208 transitions. [2024-11-16 11:57:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 11:57:11,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:11,310 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] [2024-11-16 11:57:11,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-16 11:57:11,310 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:11,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash 486929136, now seen corresponding path program 1 times [2024-11-16 11:57:11,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:11,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604039011] [2024-11-16 11:57:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:11,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat