./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem17_label16.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12946011ae947529b791d0ea774eddb13cd60d584cd7e2008a422f41653953d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:51:30,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:51:30,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:51:30,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:51:30,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:51:30,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:51:30,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:51:30,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:51:30,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:51:30,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:51:30,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:51:30,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:51:30,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:51:30,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:51:30,600 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:51:30,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:51:30,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:51:30,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:51:30,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:51:30,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:51:30,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:51:30,602 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:51:30,602 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:51:30,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:51:30,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:51:30,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:51:30,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:51:30,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:51:30,603 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:51:30,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:51:30,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:51:30,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:51:30,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:30,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:51:30,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:51:30,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:51:30,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:51:30,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:51:30,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:51:30,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:51:30,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:51:30,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:51:30,608 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12946011ae947529b791d0ea774eddb13cd60d584cd7e2008a422f41653953d6 [2024-11-09 19:51:30,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:51:30,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:51:30,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:51:30,812 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:51:30,813 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:51:30,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label16.c [2024-11-09 19:51:32,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:51:32,326 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:51:32,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c [2024-11-09 19:51:32,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547bb5a00/a26eca646ae544469621afaa8732e977/FLAGd1c3062f0 [2024-11-09 19:51:32,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547bb5a00/a26eca646ae544469621afaa8732e977 [2024-11-09 19:51:32,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:51:32,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:51:32,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:32,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:51:32,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:51:32,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:32" (1/1) ... [2024-11-09 19:51:32,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6195745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:32, skipping insertion in model container [2024-11-09 19:51:32,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:32" (1/1) ... [2024-11-09 19:51:32,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:51:32,641 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/eca-rers2012/Problem17_label16.c[3929,3942] [2024-11-09 19:51:33,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:33,017 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:51:33,046 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/eca-rers2012/Problem17_label16.c[3929,3942] [2024-11-09 19:51:33,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:33,253 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:51:33,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33 WrapperNode [2024-11-09 19:51:33,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:33,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:33,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:51:33,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:51:33,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,443 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:51:33,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:33,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:51:33,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:51:33,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:51:33,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,624 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]. [2024-11-09 19:51:33,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,709 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:51:33,768 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:51:33,768 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:51:33,768 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:51:33,769 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (1/1) ... [2024-11-09 19:51:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:33,794 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) [2024-11-09 19:51:33,797 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 [2024-11-09 19:51:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:51:33,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:51:33,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:51:33,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:51:33,879 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:51:33,880 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:51:36,715 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:51:36,879 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:51:36,879 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:51:36,908 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:51:36,908 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:51:36,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:36 BoogieIcfgContainer [2024-11-09 19:51:36,909 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:51:36,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:51:36,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:51:36,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:51:36,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:51:32" (1/3) ... [2024-11-09 19:51:36,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f93595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:36, skipping insertion in model container [2024-11-09 19:51:36,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:33" (2/3) ... [2024-11-09 19:51:36,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f93595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:36, skipping insertion in model container [2024-11-09 19:51:36,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:36" (3/3) ... [2024-11-09 19:51:36,916 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2024-11-09 19:51:36,928 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:51:36,928 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:51:37,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:51:37,019 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;@3354186a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:51:37,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:51:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 19:51:37,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:37,033 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] [2024-11-09 19:51:37,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:37,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash -543080582, now seen corresponding path program 1 times [2024-11-09 19:51:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440350451] [2024-11-09 19:51:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:37,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:37,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440350451] [2024-11-09 19:51:37,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440350451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:37,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:37,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:37,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283867192] [2024-11-09 19:51:37,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:37,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:37,279 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 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 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:39,591 INFO L93 Difference]: Finished difference Result 1648 states and 4104 transitions. [2024-11-09 19:51:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:39,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-09 19:51:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:39,606 INFO L225 Difference]: With dead ends: 1648 [2024-11-09 19:51:39,607 INFO L226 Difference]: Without dead ends: 978 [2024-11-09 19:51:39,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:39,613 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 823 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:39,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 556 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:51:39,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-09 19:51:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-09 19:51:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.2412731006160165) internal successors, (2183), 974 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2183 transitions. [2024-11-09 19:51:39,678 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2183 transitions. Word has length 27 [2024-11-09 19:51:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:39,679 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 2183 transitions. [2024-11-09 19:51:39,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:39,679 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2183 transitions. [2024-11-09 19:51:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 19:51:39,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:39,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:39,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:51:39,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:39,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash 731900099, now seen corresponding path program 1 times [2024-11-09 19:51:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89576087] [2024-11-09 19:51:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:39,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:39,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89576087] [2024-11-09 19:51:39,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89576087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:39,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566997081] [2024-11-09 19:51:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:39,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:39,975 INFO L87 Difference]: Start difference. First operand 975 states and 2183 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:43,613 INFO L93 Difference]: Finished difference Result 3748 states and 8530 transitions. [2024-11-09 19:51:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-11-09 19:51:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:43,622 INFO L225 Difference]: With dead ends: 3748 [2024-11-09 19:51:43,622 INFO L226 Difference]: Without dead ends: 2775 [2024-11-09 19:51:43,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:43,625 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 1654 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:43,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 277 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 3981 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:51:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2024-11-09 19:51:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2731. [2024-11-09 19:51:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2730 states have (on average 2.1805860805860804) internal successors, (5953), 2730 states have internal predecessors, (5953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 5953 transitions. [2024-11-09 19:51:43,671 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 5953 transitions. Word has length 98 [2024-11-09 19:51:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:43,672 INFO L471 AbstractCegarLoop]: Abstraction has 2731 states and 5953 transitions. [2024-11-09 19:51:43,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 5953 transitions. [2024-11-09 19:51:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 19:51:43,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:43,675 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:43,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:51:43,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:43,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 463693978, now seen corresponding path program 1 times [2024-11-09 19:51:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:43,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888325085] [2024-11-09 19:51:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888325085] [2024-11-09 19:51:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888325085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:43,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:43,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:43,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359139666] [2024-11-09 19:51:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:43,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:43,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:43,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:43,832 INFO L87 Difference]: Start difference. First operand 2731 states and 5953 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:45,896 INFO L93 Difference]: Finished difference Result 7246 states and 15944 transitions. [2024-11-09 19:51:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:45,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-09 19:51:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:45,909 INFO L225 Difference]: With dead ends: 7246 [2024-11-09 19:51:45,910 INFO L226 Difference]: Without dead ends: 4517 [2024-11-09 19:51:45,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:45,914 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 802 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:45,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 336 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:51:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2024-11-09 19:51:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4487. [2024-11-09 19:51:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 2.189032545697726) internal successors, (9820), 4486 states have internal predecessors, (9820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 9820 transitions. [2024-11-09 19:51:45,979 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 9820 transitions. Word has length 120 [2024-11-09 19:51:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:45,980 INFO L471 AbstractCegarLoop]: Abstraction has 4487 states and 9820 transitions. [2024-11-09 19:51:45,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 9820 transitions. [2024-11-09 19:51:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 19:51:45,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:45,986 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:45,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:51:45,987 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:45,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash 309678387, now seen corresponding path program 1 times [2024-11-09 19:51:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:45,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250009990] [2024-11-09 19:51:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250009990] [2024-11-09 19:51:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250009990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:46,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:46,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324446441] [2024-11-09 19:51:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:46,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:46,263 INFO L87 Difference]: Start difference. First operand 4487 states and 9820 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:48,257 INFO L93 Difference]: Finished difference Result 8129 states and 17801 transitions. [2024-11-09 19:51:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2024-11-09 19:51:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:48,269 INFO L225 Difference]: With dead ends: 8129 [2024-11-09 19:51:48,269 INFO L226 Difference]: Without dead ends: 4507 [2024-11-09 19:51:48,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:48,273 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 713 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:48,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 543 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:51:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2024-11-09 19:51:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4488. [2024-11-09 19:51:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.174058390907065) internal successors, (9755), 4487 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 9755 transitions. [2024-11-09 19:51:48,337 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 9755 transitions. Word has length 133 [2024-11-09 19:51:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:48,338 INFO L471 AbstractCegarLoop]: Abstraction has 4488 states and 9755 transitions. [2024-11-09 19:51:48,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 9755 transitions. [2024-11-09 19:51:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 19:51:48,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:48,342 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:48,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:51:48,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:48,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1516521787, now seen corresponding path program 1 times [2024-11-09 19:51:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423757520] [2024-11-09 19:51:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:48,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:48,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423757520] [2024-11-09 19:51:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423757520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:48,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837157585] [2024-11-09 19:51:48,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:48,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:48,661 INFO L87 Difference]: Start difference. First operand 4488 states and 9755 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:50,733 INFO L93 Difference]: Finished difference Result 8536 states and 18525 transitions. [2024-11-09 19:51:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:50,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-11-09 19:51:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:50,744 INFO L225 Difference]: With dead ends: 8536 [2024-11-09 19:51:50,744 INFO L226 Difference]: Without dead ends: 4050 [2024-11-09 19:51:50,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:51:50,747 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 888 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:50,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 861 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:51:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2024-11-09 19:51:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 4050. [2024-11-09 19:51:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 4049 states have (on average 2.1590516176833785) internal successors, (8742), 4049 states have internal predecessors, (8742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 8742 transitions. [2024-11-09 19:51:50,797 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 8742 transitions. Word has length 139 [2024-11-09 19:51:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:50,798 INFO L471 AbstractCegarLoop]: Abstraction has 4050 states and 8742 transitions. [2024-11-09 19:51:50,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 8742 transitions. [2024-11-09 19:51:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-09 19:51:50,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:50,800 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:50,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:51:50,800 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:50,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:50,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1448318281, now seen corresponding path program 1 times [2024-11-09 19:51:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595453355] [2024-11-09 19:51:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:50,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:51:50,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:50,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595453355] [2024-11-09 19:51:50,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595453355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:50,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:50,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664484845] [2024-11-09 19:51:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:50,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:50,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:50,922 INFO L87 Difference]: Start difference. First operand 4050 states and 8742 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:52,709 INFO L93 Difference]: Finished difference Result 11088 states and 24355 transitions. [2024-11-09 19:51:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 168 [2024-11-09 19:51:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:52,729 INFO L225 Difference]: With dead ends: 11088 [2024-11-09 19:51:52,730 INFO L226 Difference]: Without dead ends: 6605 [2024-11-09 19:51:52,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:52,735 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:52,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:51:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2024-11-09 19:51:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 5318. [2024-11-09 19:51:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 2.0443859319164943) internal successors, (10870), 5317 states have internal predecessors, (10870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 10870 transitions. [2024-11-09 19:51:52,847 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 10870 transitions. Word has length 168 [2024-11-09 19:51:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:52,847 INFO L471 AbstractCegarLoop]: Abstraction has 5318 states and 10870 transitions. [2024-11-09 19:51:52,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 10870 transitions. [2024-11-09 19:51:52,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-09 19:51:52,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:52,849 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:52,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:51:52,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:52,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash -125094606, now seen corresponding path program 1 times [2024-11-09 19:51:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:52,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867541515] [2024-11-09 19:51:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867541515] [2024-11-09 19:51:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867541515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639735412] [2024-11-09 19:51:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:52,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:52,978 INFO L87 Difference]: Start difference. First operand 5318 states and 10870 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:54,676 INFO L93 Difference]: Finished difference Result 12761 states and 26660 transitions. [2024-11-09 19:51:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:54,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2024-11-09 19:51:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:54,722 INFO L225 Difference]: With dead ends: 12761 [2024-11-09 19:51:54,722 INFO L226 Difference]: Without dead ends: 7445 [2024-11-09 19:51:54,725 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 [2024-11-09 19:51:54,725 INFO L432 NwaCegarLoop]: 1105 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:54,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1165 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:51:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2024-11-09 19:51:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 7445. [2024-11-09 19:51:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7445 states, 7444 states have (on average 2.050644814615798) internal successors, (15265), 7444 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 15265 transitions. [2024-11-09 19:51:54,813 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 15265 transitions. Word has length 181 [2024-11-09 19:51:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:54,813 INFO L471 AbstractCegarLoop]: Abstraction has 7445 states and 15265 transitions. [2024-11-09 19:51:54,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 15265 transitions. [2024-11-09 19:51:54,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-09 19:51:54,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:54,815 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:54,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:51:54,815 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:54,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash 14984472, now seen corresponding path program 1 times [2024-11-09 19:51:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:54,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104228100] [2024-11-09 19:51:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:51:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104228100] [2024-11-09 19:51:54,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104228100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:54,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:54,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493462604] [2024-11-09 19:51:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:54,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:54,905 INFO L87 Difference]: Start difference. First operand 7445 states and 15265 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:56,742 INFO L93 Difference]: Finished difference Result 18717 states and 38711 transitions. [2024-11-09 19:51:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:56,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 183 [2024-11-09 19:51:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:56,759 INFO L225 Difference]: With dead ends: 18717 [2024-11-09 19:51:56,759 INFO L226 Difference]: Without dead ends: 11274 [2024-11-09 19:51:56,767 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 [2024-11-09 19:51:56,768 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 787 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:56,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 492 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:51:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2024-11-09 19:51:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 8272. [2024-11-09 19:51:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8272 states, 8271 states have (on average 2.040744770886229) internal successors, (16879), 8271 states have internal predecessors, (16879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8272 states to 8272 states and 16879 transitions. [2024-11-09 19:51:56,905 INFO L78 Accepts]: Start accepts. Automaton has 8272 states and 16879 transitions. Word has length 183 [2024-11-09 19:51:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:56,905 INFO L471 AbstractCegarLoop]: Abstraction has 8272 states and 16879 transitions. [2024-11-09 19:51:56,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 8272 states and 16879 transitions. [2024-11-09 19:51:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-09 19:51:56,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:56,907 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:56,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:51:56,907 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:56,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1318714210, now seen corresponding path program 1 times [2024-11-09 19:51:56,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:56,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015884000] [2024-11-09 19:51:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015884000] [2024-11-09 19:51:56,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015884000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:56,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575174417] [2024-11-09 19:51:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:56,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:56,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:56,980 INFO L87 Difference]: Start difference. First operand 8272 states and 16879 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:58,945 INFO L93 Difference]: Finished difference Result 20807 states and 43057 transitions. [2024-11-09 19:51:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:58,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 196 [2024-11-09 19:51:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:58,967 INFO L225 Difference]: With dead ends: 20807 [2024-11-09 19:51:58,967 INFO L226 Difference]: Without dead ends: 12537 [2024-11-09 19:51:58,975 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 [2024-11-09 19:51:58,977 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 811 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:58,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 458 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:51:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12537 states. [2024-11-09 19:51:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12537 to 11678. [2024-11-09 19:51:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11678 states, 11677 states have (on average 2.044360709086238) internal successors, (23872), 11677 states have internal predecessors, (23872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11678 states to 11678 states and 23872 transitions. [2024-11-09 19:51:59,135 INFO L78 Accepts]: Start accepts. Automaton has 11678 states and 23872 transitions. Word has length 196 [2024-11-09 19:51:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:59,136 INFO L471 AbstractCegarLoop]: Abstraction has 11678 states and 23872 transitions. [2024-11-09 19:51:59,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11678 states and 23872 transitions. [2024-11-09 19:51:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 19:51:59,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:59,138 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:59,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:51:59,138 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:59,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2006980230, now seen corresponding path program 1 times [2024-11-09 19:51:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139842322] [2024-11-09 19:51:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:59,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:59,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139842322] [2024-11-09 19:51:59,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139842322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:59,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:59,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:59,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689037985] [2024-11-09 19:51:59,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:59,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:59,228 INFO L87 Difference]: Start difference. First operand 11678 states and 23872 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:01,246 INFO L93 Difference]: Finished difference Result 31456 states and 64290 transitions. [2024-11-09 19:52:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:01,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2024-11-09 19:52:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:01,272 INFO L225 Difference]: With dead ends: 31456 [2024-11-09 19:52:01,272 INFO L226 Difference]: Without dead ends: 19780 [2024-11-09 19:52:01,279 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 [2024-11-09 19:52:01,280 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 872 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:01,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 286 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:52:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19780 states. [2024-11-09 19:52:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19780 to 17641. [2024-11-09 19:52:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17641 states, 17640 states have (on average 2.038265306122449) internal successors, (35955), 17640 states have internal predecessors, (35955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17641 states to 17641 states and 35955 transitions. [2024-11-09 19:52:01,536 INFO L78 Accepts]: Start accepts. Automaton has 17641 states and 35955 transitions. Word has length 228 [2024-11-09 19:52:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:01,537 INFO L471 AbstractCegarLoop]: Abstraction has 17641 states and 35955 transitions. [2024-11-09 19:52:01,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17641 states and 35955 transitions. [2024-11-09 19:52:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-09 19:52:01,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:01,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:01,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:52:01,540 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:01,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -372621883, now seen corresponding path program 1 times [2024-11-09 19:52:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048545666] [2024-11-09 19:52:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:01,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048545666] [2024-11-09 19:52:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048545666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:01,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:01,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962291211] [2024-11-09 19:52:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:01,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:01,698 INFO L87 Difference]: Start difference. First operand 17641 states and 35955 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:03,564 INFO L93 Difference]: Finished difference Result 42136 states and 85712 transitions. [2024-11-09 19:52:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2024-11-09 19:52:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:03,591 INFO L225 Difference]: With dead ends: 42136 [2024-11-09 19:52:03,591 INFO L226 Difference]: Without dead ends: 23645 [2024-11-09 19:52:03,603 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 [2024-11-09 19:52:03,603 INFO L432 NwaCegarLoop]: 1165 mSDtfsCounter, 715 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:03,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1239 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:52:03,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23645 states. [2024-11-09 19:52:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23645 to 23208. [2024-11-09 19:52:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23208 states, 23207 states have (on average 1.9958633171025983) internal successors, (46318), 23207 states have internal predecessors, (46318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23208 states to 23208 states and 46318 transitions. [2024-11-09 19:52:03,814 INFO L78 Accepts]: Start accepts. Automaton has 23208 states and 46318 transitions. Word has length 245 [2024-11-09 19:52:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:03,815 INFO L471 AbstractCegarLoop]: Abstraction has 23208 states and 46318 transitions. [2024-11-09 19:52:03,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 23208 states and 46318 transitions. [2024-11-09 19:52:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-09 19:52:03,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:03,819 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:03,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:52:03,819 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:03,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash 611616101, now seen corresponding path program 1 times [2024-11-09 19:52:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072547443] [2024-11-09 19:52:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 19:52:04,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072547443] [2024-11-09 19:52:04,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072547443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044127260] [2024-11-09 19:52:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:04,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:04,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:04,025 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) [2024-11-09 19:52:04,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:52:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:04,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:04,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 19:52:04,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 19:52:04,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044127260] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:04,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:04,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:52:04,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166843018] [2024-11-09 19:52:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:04,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:04,613 INFO L87 Difference]: Start difference. First operand 23208 states and 46318 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:07,593 INFO L93 Difference]: Finished difference Result 63501 states and 127291 transitions. [2024-11-09 19:52:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 254 [2024-11-09 19:52:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:07,723 INFO L225 Difference]: With dead ends: 63501 [2024-11-09 19:52:07,723 INFO L226 Difference]: Without dead ends: 39427 [2024-11-09 19:52:07,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:07,731 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 1594 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 3676 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 4352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 3676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:07,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 169 Invalid, 4352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 3676 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:52:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39427 states. [2024-11-09 19:52:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39427 to 37717. [2024-11-09 19:52:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37717 states, 37716 states have (on average 1.982182628062361) internal successors, (74760), 37716 states have internal predecessors, (74760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37717 states to 37717 states and 74760 transitions. [2024-11-09 19:52:08,072 INFO L78 Accepts]: Start accepts. Automaton has 37717 states and 74760 transitions. Word has length 254 [2024-11-09 19:52:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:08,072 INFO L471 AbstractCegarLoop]: Abstraction has 37717 states and 74760 transitions. [2024-11-09 19:52:08,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 37717 states and 74760 transitions. [2024-11-09 19:52:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-09 19:52:08,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:08,074 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:08,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:52:08,278 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,SelfDestructingSolverStorable11 [2024-11-09 19:52:08,279 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:08,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:08,279 INFO L85 PathProgramCache]: Analyzing trace with hash -906761288, now seen corresponding path program 1 times [2024-11-09 19:52:08,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:08,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639893649] [2024-11-09 19:52:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-09 19:52:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639893649] [2024-11-09 19:52:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639893649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:08,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013703482] [2024-11-09 19:52:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:08,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:08,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:08,381 INFO L87 Difference]: Start difference. First operand 37717 states and 74760 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:10,387 INFO L93 Difference]: Finished difference Result 82675 states and 164186 transitions. [2024-11-09 19:52:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:10,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 262 [2024-11-09 19:52:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:10,439 INFO L225 Difference]: With dead ends: 82675 [2024-11-09 19:52:10,439 INFO L226 Difference]: Without dead ends: 44532 [2024-11-09 19:52:10,465 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 [2024-11-09 19:52:10,465 INFO L432 NwaCegarLoop]: 1112 mSDtfsCounter, 747 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:10,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1175 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:52:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44532 states. [2024-11-09 19:52:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44532 to 44532. [2024-11-09 19:52:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44532 states, 44531 states have (on average 1.9507983202712718) internal successors, (86871), 44531 states have internal predecessors, (86871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44532 states to 44532 states and 86871 transitions. [2024-11-09 19:52:11,086 INFO L78 Accepts]: Start accepts. Automaton has 44532 states and 86871 transitions. Word has length 262 [2024-11-09 19:52:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:11,086 INFO L471 AbstractCegarLoop]: Abstraction has 44532 states and 86871 transitions. [2024-11-09 19:52:11,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 44532 states and 86871 transitions. [2024-11-09 19:52:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-09 19:52:11,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:11,090 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:11,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:52:11,091 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:11,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1486238124, now seen corresponding path program 1 times [2024-11-09 19:52:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:11,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782509694] [2024-11-09 19:52:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 331 proven. 74 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 19:52:11,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782509694] [2024-11-09 19:52:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782509694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268904721] [2024-11-09 19:52:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:11,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:11,503 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) [2024-11-09 19:52:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:52:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:11,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:11,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 331 proven. 74 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 19:52:11,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 19:52:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268904721] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:11,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:11,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:52:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678289461] [2024-11-09 19:52:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:11,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:11,909 INFO L87 Difference]: Start difference. First operand 44532 states and 86871 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:14,818 INFO L93 Difference]: Finished difference Result 106158 states and 207365 transitions. [2024-11-09 19:52:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:14,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 329 [2024-11-09 19:52:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:14,887 INFO L225 Difference]: With dead ends: 106158 [2024-11-09 19:52:14,887 INFO L226 Difference]: Without dead ends: 61198 [2024-11-09 19:52:14,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:14,916 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1551 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 3706 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 4149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:14,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 191 Invalid, 4149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3706 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 19:52:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61198 states. [2024-11-09 19:52:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61198 to 57789. [2024-11-09 19:52:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57789 states, 57788 states have (on average 1.9559078009275281) internal successors, (113028), 57788 states have internal predecessors, (113028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57789 states to 57789 states and 113028 transitions. [2024-11-09 19:52:15,821 INFO L78 Accepts]: Start accepts. Automaton has 57789 states and 113028 transitions. Word has length 329 [2024-11-09 19:52:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:15,821 INFO L471 AbstractCegarLoop]: Abstraction has 57789 states and 113028 transitions. [2024-11-09 19:52:15,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 57789 states and 113028 transitions. [2024-11-09 19:52:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-09 19:52:15,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:15,830 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:15,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:52:16,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 19:52:16,031 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:16,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1769000934, now seen corresponding path program 1 times [2024-11-09 19:52:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:16,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544225605] [2024-11-09 19:52:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-09 19:52:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544225605] [2024-11-09 19:52:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544225605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261952675] [2024-11-09 19:52:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:16,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:16,611 INFO L87 Difference]: Start difference. First operand 57789 states and 113028 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:18,712 INFO L93 Difference]: Finished difference Result 138608 states and 271147 transitions. [2024-11-09 19:52:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 427 [2024-11-09 19:52:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:18,818 INFO L225 Difference]: With dead ends: 138608 [2024-11-09 19:52:18,818 INFO L226 Difference]: Without dead ends: 78257 [2024-11-09 19:52:18,850 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 [2024-11-09 19:52:18,850 INFO L432 NwaCegarLoop]: 949 mSDtfsCounter, 795 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:18,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 984 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:52:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78257 states. [2024-11-09 19:52:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78257 to 72704. [2024-11-09 19:52:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72704 states, 72703 states have (on average 1.9453530115676108) internal successors, (141433), 72703 states have internal predecessors, (141433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72704 states to 72704 states and 141433 transitions. [2024-11-09 19:52:19,817 INFO L78 Accepts]: Start accepts. Automaton has 72704 states and 141433 transitions. Word has length 427 [2024-11-09 19:52:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:19,817 INFO L471 AbstractCegarLoop]: Abstraction has 72704 states and 141433 transitions. [2024-11-09 19:52:19,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 72704 states and 141433 transitions. [2024-11-09 19:52:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-09 19:52:19,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:19,825 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:52:19,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:52:19,825 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:19,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1379738763, now seen corresponding path program 1 times [2024-11-09 19:52:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785227401] [2024-11-09 19:52:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:52:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785227401] [2024-11-09 19:52:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785227401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165782850] [2024-11-09 19:52:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:20,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:20,284 INFO L87 Difference]: Start difference. First operand 72704 states and 141433 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:22,382 INFO L93 Difference]: Finished difference Result 149679 states and 291092 transitions. [2024-11-09 19:52:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 460 [2024-11-09 19:52:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:22,466 INFO L225 Difference]: With dead ends: 149679 [2024-11-09 19:52:22,466 INFO L226 Difference]: Without dead ends: 76977 [2024-11-09 19:52:22,496 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 [2024-11-09 19:52:22,497 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 698 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:22,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1103 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:52:22,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76977 states. [2024-11-09 19:52:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76977 to 64559. [2024-11-09 19:52:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64559 states, 64558 states have (on average 1.9381176616375972) internal successors, (125121), 64558 states have internal predecessors, (125121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64559 states to 64559 states and 125121 transitions. [2024-11-09 19:52:23,347 INFO L78 Accepts]: Start accepts. Automaton has 64559 states and 125121 transitions. Word has length 460 [2024-11-09 19:52:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:23,347 INFO L471 AbstractCegarLoop]: Abstraction has 64559 states and 125121 transitions. [2024-11-09 19:52:23,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 64559 states and 125121 transitions. [2024-11-09 19:52:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-09 19:52:23,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:23,354 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:23,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:52:23,355 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:23,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1083110090, now seen corresponding path program 1 times [2024-11-09 19:52:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:23,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816332490] [2024-11-09 19:52:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 19:52:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816332490] [2024-11-09 19:52:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816332490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863712955] [2024-11-09 19:52:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:24,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:24,083 INFO L87 Difference]: Start difference. First operand 64559 states and 125121 transitions. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:27,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:27,018 INFO L93 Difference]: Finished difference Result 156059 states and 302329 transitions. [2024-11-09 19:52:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:27,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 472 [2024-11-09 19:52:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:27,121 INFO L225 Difference]: With dead ends: 156059 [2024-11-09 19:52:27,121 INFO L226 Difference]: Without dead ends: 91502 [2024-11-09 19:52:27,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:27,156 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1487 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 4122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:27,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 209 Invalid, 4122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 3746 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:52:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91502 states. [2024-11-09 19:52:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91502 to 88080. [2024-11-09 19:52:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88080 states, 88079 states have (on average 1.9348879982742766) internal successors, (170423), 88079 states have internal predecessors, (170423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88080 states to 88080 states and 170423 transitions. [2024-11-09 19:52:28,520 INFO L78 Accepts]: Start accepts. Automaton has 88080 states and 170423 transitions. Word has length 472 [2024-11-09 19:52:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:28,521 INFO L471 AbstractCegarLoop]: Abstraction has 88080 states and 170423 transitions. [2024-11-09 19:52:28,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 88080 states and 170423 transitions. [2024-11-09 19:52:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-09 19:52:28,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:28,538 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:28,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:52:28,542 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:28,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:28,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1154845304, now seen corresponding path program 1 times [2024-11-09 19:52:28,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:28,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997140723] [2024-11-09 19:52:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-09 19:52:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997140723] [2024-11-09 19:52:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997140723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:28,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729983016] [2024-11-09 19:52:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:28,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:28,817 INFO L87 Difference]: Start difference. First operand 88080 states and 170423 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:30,982 INFO L93 Difference]: Finished difference Result 185974 states and 360119 transitions. [2024-11-09 19:52:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:30,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 474 [2024-11-09 19:52:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:31,112 INFO L225 Difference]: With dead ends: 185974 [2024-11-09 19:52:31,112 INFO L226 Difference]: Without dead ends: 97896 [2024-11-09 19:52:31,167 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 [2024-11-09 19:52:31,167 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 838 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:31,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 248 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:52:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97896 states. [2024-11-09 19:52:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97896 to 97014. [2024-11-09 19:52:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97014 states, 97013 states have (on average 1.9321224990465196) internal successors, (187441), 97013 states have internal predecessors, (187441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97014 states to 97014 states and 187441 transitions. [2024-11-09 19:52:32,442 INFO L78 Accepts]: Start accepts. Automaton has 97014 states and 187441 transitions. Word has length 474 [2024-11-09 19:52:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:32,442 INFO L471 AbstractCegarLoop]: Abstraction has 97014 states and 187441 transitions. [2024-11-09 19:52:32,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 97014 states and 187441 transitions. [2024-11-09 19:52:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-09 19:52:32,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:32,723 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:32,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:52:32,723 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:32,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1240806893, now seen corresponding path program 1 times [2024-11-09 19:52:32,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:32,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748864790] [2024-11-09 19:52:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:32,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 568 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 19:52:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748864790] [2024-11-09 19:52:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748864790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675860827] [2024-11-09 19:52:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:33,706 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) [2024-11-09 19:52:33,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:52:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:33,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 19:52:33,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 568 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 19:52:35,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 568 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 19:52:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675860827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:52:36,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:52:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 19:52:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889133637] [2024-11-09 19:52:36,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:52:36,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 19:52:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 19:52:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 19:52:36,893 INFO L87 Difference]: Start difference. First operand 97014 states and 187441 transitions. Second operand has 11 states, 11 states have (on average 78.18181818181819) internal successors, (860), 11 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:46,528 INFO L93 Difference]: Finished difference Result 204849 states and 395169 transitions. [2024-11-09 19:52:46,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 19:52:46,528 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 78.18181818181819) internal successors, (860), 11 states have internal predecessors, (860), 0 states have call successors, (0), 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 515 [2024-11-09 19:52:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:46,675 INFO L225 Difference]: With dead ends: 204849 [2024-11-09 19:52:46,676 INFO L226 Difference]: Without dead ends: 107836 [2024-11-09 19:52:46,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2024-11-09 19:52:46,695 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 6107 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 20487 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6107 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 21204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 20487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:46,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6107 Valid, 428 Invalid, 21204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 20487 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-09 19:52:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107836 states. [2024-11-09 19:52:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107836 to 95715. [2024-11-09 19:52:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95715 states, 95714 states have (on average 1.927053513592578) internal successors, (184446), 95714 states have internal predecessors, (184446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95715 states to 95715 states and 184446 transitions. [2024-11-09 19:52:48,212 INFO L78 Accepts]: Start accepts. Automaton has 95715 states and 184446 transitions. Word has length 515 [2024-11-09 19:52:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:48,213 INFO L471 AbstractCegarLoop]: Abstraction has 95715 states and 184446 transitions. [2024-11-09 19:52:48,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 78.18181818181819) internal successors, (860), 11 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 95715 states and 184446 transitions. [2024-11-09 19:52:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-11-09 19:52:48,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:48,225 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:48,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:52:48,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:48,426 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:48,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash 430729843, now seen corresponding path program 1 times [2024-11-09 19:52:48,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:48,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869793243] [2024-11-09 19:52:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:48,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:52:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:49,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869793243] [2024-11-09 19:52:49,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869793243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:49,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:49,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016013110] [2024-11-09 19:52:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:49,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:49,304 INFO L87 Difference]: Start difference. First operand 95715 states and 184446 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:51,170 INFO L93 Difference]: Finished difference Result 191427 states and 368889 transitions. [2024-11-09 19:52:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 534 [2024-11-09 19:52:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:51,267 INFO L225 Difference]: With dead ends: 191427 [2024-11-09 19:52:51,267 INFO L226 Difference]: Without dead ends: 95714 [2024-11-09 19:52:51,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:51,290 INFO L432 NwaCegarLoop]: 880 mSDtfsCounter, 947 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:51,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 897 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:52:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95714 states. [2024-11-09 19:52:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95714 to 95286. [2024-11-09 19:52:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95286 states, 95285 states have (on average 1.9269139948575327) internal successors, (183606), 95285 states have internal predecessors, (183606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95286 states to 95286 states and 183606 transitions. [2024-11-09 19:52:52,304 INFO L78 Accepts]: Start accepts. Automaton has 95286 states and 183606 transitions. Word has length 534 [2024-11-09 19:52:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:52,305 INFO L471 AbstractCegarLoop]: Abstraction has 95286 states and 183606 transitions. [2024-11-09 19:52:52,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 95286 states and 183606 transitions. [2024-11-09 19:52:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-09 19:52:52,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:52,315 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:52:52,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 19:52:52,315 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:52,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1214644540, now seen corresponding path program 1 times [2024-11-09 19:52:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:52,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313151405] [2024-11-09 19:52:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 588 proven. 142 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 19:52:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313151405] [2024-11-09 19:52:53,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313151405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205502323] [2024-11-09 19:52:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:53,444 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) [2024-11-09 19:52:53,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:52:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:53,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 19:52:53,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 422 proven. 308 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 19:52:54,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-09 19:52:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205502323] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:54,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-11-09 19:52:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702537711] [2024-11-09 19:52:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:54,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:52:54,249 INFO L87 Difference]: Start difference. First operand 95286 states and 183606 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)