./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label06.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_label06.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 e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:50:26,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:50:26,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:50:26,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:50:26,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:50:26,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:50:26,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:50:26,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:50:26,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:50:26,645 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:50:26,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:50:26,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:50:26,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:50:26,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:50:26,647 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:50:26,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:50:26,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:50:26,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:50:26,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:50:26,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:50:26,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:50:26,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:50:26,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:50:26,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:50:26,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:50:26,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:50:26,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:50:26,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:50:26,654 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:50:26,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:50:26,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:50:26,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:50:26,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:50:26,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:50:26,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:50:26,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:50:26,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:50:26,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:50:26,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:50:26,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:50:26,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:50:26,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:50:26,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 [2024-11-09 19:50:26,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:50:26,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:50:26,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:50:26,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:50:26,945 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:50:26,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-11-09 19:50:28,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:50:28,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:50:28,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-11-09 19:50:28,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5c70067/0762878ca0df4c03bfbfc3ec6c4b74f6/FLAG9e9b3d526 [2024-11-09 19:50:28,803 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5c70067/0762878ca0df4c03bfbfc3ec6c4b74f6 [2024-11-09 19:50:28,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:50:28,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:50:28,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:50:28,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:50:28,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:50:28,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:50:28" (1/1) ... [2024-11-09 19:50:28,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cce610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:28, skipping insertion in model container [2024-11-09 19:50:28,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:50:28" (1/1) ... [2024-11-09 19:50:28,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:50:29,152 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_label06.c[4782,4795] [2024-11-09 19:50:29,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:50:29,766 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:50:29,795 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_label06.c[4782,4795] [2024-11-09 19:50:30,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:50:30,133 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:50:30,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30 WrapperNode [2024-11-09 19:50:30,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:50:30,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:50:30,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:50:30,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:50:30,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,548 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:50:30,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:50:30,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:50:30,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:50:30,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:50:30,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,833 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 19:50:30,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,930 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:30,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:31,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:50:31,016 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:50:31,017 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:50:31,017 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:50:31,018 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (1/1) ... [2024-11-09 19:50:31,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:50:31,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:50:31,051 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 19:50:31,053 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 19:50:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:50:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:50:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:50:31,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:50:31,150 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:50:31,152 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:50:34,823 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:50:34,988 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:50:34,989 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:50:35,021 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:50:35,024 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:50:35,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:50:35 BoogieIcfgContainer [2024-11-09 19:50:35,024 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:50:35,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:50:35,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:50:35,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:50:35,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:50:28" (1/3) ... [2024-11-09 19:50:35,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bba97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:50:35, skipping insertion in model container [2024-11-09 19:50:35,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:30" (2/3) ... [2024-11-09 19:50:35,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bba97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:50:35, skipping insertion in model container [2024-11-09 19:50:35,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:50:35" (3/3) ... [2024-11-09 19:50:35,034 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2024-11-09 19:50:35,050 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:50:35,051 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:50:35,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:50:35,154 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;@42daa352, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:50:35,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:50:35,162 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 19:50:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 19:50:35,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:35,171 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:35,171 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:35,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash 486700913, now seen corresponding path program 1 times [2024-11-09 19:50:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377455681] [2024-11-09 19:50:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:35,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:35,584 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 19:50:35,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:35,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377455681] [2024-11-09 19:50:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377455681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:35,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:35,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116963597] [2024-11-09 19:50:35,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:35,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:35,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:35,624 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 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 19:50:38,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:38,774 INFO L93 Difference]: Finished difference Result 1650 states and 4109 transitions. [2024-11-09 19:50:38,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-11-09 19:50:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:38,796 INFO L225 Difference]: With dead ends: 1650 [2024-11-09 19:50:38,796 INFO L226 Difference]: Without dead ends: 980 [2024-11-09 19:50:38,801 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 19:50:38,804 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 815 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:38,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 506 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 19:50:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-09 19:50:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-09 19:50:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 2.287769784172662) internal successors, (2226), 973 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states 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 19:50:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 2226 transitions. [2024-11-09 19:50:38,909 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 2226 transitions. Word has length 33 [2024-11-09 19:50:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:38,909 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 2226 transitions. [2024-11-09 19:50:38,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 19:50:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 2226 transitions. [2024-11-09 19:50:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 19:50:38,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:38,912 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, 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 19:50:38,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:50:38,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:38,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1936800625, now seen corresponding path program 1 times [2024-11-09 19:50:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213690506] [2024-11-09 19:50:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:39,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213690506] [2024-11-09 19:50:39,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213690506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:39,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:39,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650201109] [2024-11-09 19:50:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:39,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:39,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:39,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:39,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:39,145 INFO L87 Difference]: Start difference. First operand 974 states and 2226 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:50:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:42,055 INFO L93 Difference]: Finished difference Result 2821 states and 6537 transitions. [2024-11-09 19:50:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2024-11-09 19:50:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:42,064 INFO L225 Difference]: With dead ends: 2821 [2024-11-09 19:50:42,064 INFO L226 Difference]: Without dead ends: 1849 [2024-11-09 19:50:42,066 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 19:50:42,067 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 763 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:42,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 584 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:50:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-09 19:50:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1846. [2024-11-09 19:50:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 2.12520325203252) internal successors, (3921), 1845 states have internal predecessors, (3921), 0 states have call successors, (0), 0 states 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 19:50:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 3921 transitions. [2024-11-09 19:50:42,108 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 3921 transitions. Word has length 101 [2024-11-09 19:50:42,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:42,108 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 3921 transitions. [2024-11-09 19:50:42,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:50:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 3921 transitions. [2024-11-09 19:50:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 19:50:42,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:42,112 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, 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] [2024-11-09 19:50:42,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:50:42,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:42,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash 416436442, now seen corresponding path program 1 times [2024-11-09 19:50:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:42,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034063376] [2024-11-09 19:50:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:42,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:42,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034063376] [2024-11-09 19:50:42,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034063376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:42,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:42,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:42,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736297859] [2024-11-09 19:50:42,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:42,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:42,368 INFO L87 Difference]: Start difference. First operand 1846 states and 3921 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 19:50:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:44,861 INFO L93 Difference]: Finished difference Result 4564 states and 9874 transitions. [2024-11-09 19:50:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:44,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2024-11-09 19:50:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:44,875 INFO L225 Difference]: With dead ends: 4564 [2024-11-09 19:50:44,876 INFO L226 Difference]: Without dead ends: 2720 [2024-11-09 19:50:44,878 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 19:50:44,879 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 834 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:44,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1250 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:50:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2024-11-09 19:50:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2718. [2024-11-09 19:50:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.090172984909827) internal successors, (5679), 2717 states have internal predecessors, (5679), 0 states have call successors, (0), 0 states 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 19:50:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 5679 transitions. [2024-11-09 19:50:44,930 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 5679 transitions. Word has length 104 [2024-11-09 19:50:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:44,932 INFO L471 AbstractCegarLoop]: Abstraction has 2718 states and 5679 transitions. [2024-11-09 19:50:44,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 19:50:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 5679 transitions. [2024-11-09 19:50:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 19:50:44,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:44,940 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:44,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:50:44,941 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:44,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:44,941 INFO L85 PathProgramCache]: Analyzing trace with hash -632589824, now seen corresponding path program 1 times [2024-11-09 19:50:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172655703] [2024-11-09 19:50:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:44,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:50:45,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:45,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172655703] [2024-11-09 19:50:45,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172655703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:45,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:45,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:45,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960493260] [2024-11-09 19:50:45,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:45,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:45,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:45,265 INFO L87 Difference]: Start difference. First operand 2718 states and 5679 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 19:50:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:47,570 INFO L93 Difference]: Finished difference Result 8004 states and 16825 transitions. [2024-11-09 19:50:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:47,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 174 [2024-11-09 19:50:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:47,589 INFO L225 Difference]: With dead ends: 8004 [2024-11-09 19:50:47,589 INFO L226 Difference]: Without dead ends: 4432 [2024-11-09 19:50:47,594 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 19:50:47,596 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:47,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:50:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2024-11-09 19:50:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3580. [2024-11-09 19:50:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 1.9773679798826487) internal successors, (7077), 3579 states have internal predecessors, (7077), 0 states have call successors, (0), 0 states 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 19:50:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 7077 transitions. [2024-11-09 19:50:47,686 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 7077 transitions. Word has length 174 [2024-11-09 19:50:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:47,687 INFO L471 AbstractCegarLoop]: Abstraction has 3580 states and 7077 transitions. [2024-11-09 19:50:47,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 19:50:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 7077 transitions. [2024-11-09 19:50:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 19:50:47,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:47,692 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:47,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:50:47,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:47,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash -754539159, now seen corresponding path program 1 times [2024-11-09 19:50:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:47,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090002177] [2024-11-09 19:50:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090002177] [2024-11-09 19:50:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090002177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:47,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:47,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328894322] [2024-11-09 19:50:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:47,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:47,997 INFO L87 Difference]: Start difference. First operand 3580 states and 7077 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 19:50:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:50,093 INFO L93 Difference]: Finished difference Result 9296 states and 18628 transitions. [2024-11-09 19:50:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:50,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2024-11-09 19:50:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:50,116 INFO L225 Difference]: With dead ends: 9296 [2024-11-09 19:50:50,117 INFO L226 Difference]: Without dead ends: 5718 [2024-11-09 19:50:50,122 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 19:50:50,125 INFO L432 NwaCegarLoop]: 1087 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:50,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1147 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:50:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2024-11-09 19:50:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5718. [2024-11-09 19:50:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 1.9732377120867588) internal successors, (11281), 5717 states have internal predecessors, (11281), 0 states have call successors, (0), 0 states 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 19:50:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 11281 transitions. [2024-11-09 19:50:50,225 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 11281 transitions. Word has length 187 [2024-11-09 19:50:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:50,226 INFO L471 AbstractCegarLoop]: Abstraction has 5718 states and 11281 transitions. [2024-11-09 19:50:50,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 19:50:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 11281 transitions. [2024-11-09 19:50:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-09 19:50:50,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:50,229 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:50,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:50:50,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:50,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1847951153, now seen corresponding path program 1 times [2024-11-09 19:50:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:50,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174053277] [2024-11-09 19:50:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:50:50,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:50,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174053277] [2024-11-09 19:50:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174053277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:50,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742335381] [2024-11-09 19:50:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:50,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:50,487 INFO L87 Difference]: Start difference. First operand 5718 states and 11281 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:50:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:52,563 INFO L93 Difference]: Finished difference Result 14411 states and 28625 transitions. [2024-11-09 19:50:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-11-09 19:50:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:52,601 INFO L225 Difference]: With dead ends: 14411 [2024-11-09 19:50:52,602 INFO L226 Difference]: Without dead ends: 8694 [2024-11-09 19:50:52,615 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 19:50:52,616 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 778 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:52,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 450 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:50:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8694 states. [2024-11-09 19:50:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8694 to 5691. [2024-11-09 19:50:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5691 states, 5690 states have (on average 1.9753954305799648) internal successors, (11240), 5690 states have internal predecessors, (11240), 0 states have call successors, (0), 0 states 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 19:50:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 11240 transitions. [2024-11-09 19:50:52,747 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 11240 transitions. Word has length 189 [2024-11-09 19:50:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:52,747 INFO L471 AbstractCegarLoop]: Abstraction has 5691 states and 11240 transitions. [2024-11-09 19:50:52,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:50:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 11240 transitions. [2024-11-09 19:50:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-09 19:50:52,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:52,751 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, 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, 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 19:50:52,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:50:52,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:52,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1103117297, now seen corresponding path program 1 times [2024-11-09 19:50:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:52,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312463641] [2024-11-09 19:50:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:50:53,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312463641] [2024-11-09 19:50:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312463641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:53,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509964294] [2024-11-09 19:50:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:53,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:53,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:53,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:53,114 INFO L87 Difference]: Start difference. First operand 5691 states and 11240 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 19:50:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:55,399 INFO L93 Difference]: Finished difference Result 13969 states and 27728 transitions. [2024-11-09 19:50:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 268 [2024-11-09 19:50:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:55,418 INFO L225 Difference]: With dead ends: 13969 [2024-11-09 19:50:55,418 INFO L226 Difference]: Without dead ends: 7851 [2024-11-09 19:50:55,425 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 19:50:55,427 INFO L432 NwaCegarLoop]: 948 mSDtfsCounter, 854 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:55,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 992 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:50:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2024-11-09 19:50:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 7420. [2024-11-09 19:50:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 1.9838253133845531) internal successors, (14718), 7419 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states 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 19:50:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 14718 transitions. [2024-11-09 19:50:55,575 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 14718 transitions. Word has length 268 [2024-11-09 19:50:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:55,576 INFO L471 AbstractCegarLoop]: Abstraction has 7420 states and 14718 transitions. [2024-11-09 19:50:55,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 19:50:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 14718 transitions. [2024-11-09 19:50:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-09 19:50:55,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:55,580 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:55,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:50:55,581 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:55,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash -535154974, now seen corresponding path program 1 times [2024-11-09 19:50:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762130964] [2024-11-09 19:50:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:50:55,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762130964] [2024-11-09 19:50:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762130964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:55,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:55,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066210110] [2024-11-09 19:50:55,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:55,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:55,818 INFO L87 Difference]: Start difference. First operand 7420 states and 14718 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 19:50:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:58,030 INFO L93 Difference]: Finished difference Result 19084 states and 38109 transitions. [2024-11-09 19:50:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:58,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 273 [2024-11-09 19:50:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:58,058 INFO L225 Difference]: With dead ends: 19084 [2024-11-09 19:50:58,059 INFO L226 Difference]: Without dead ends: 11240 [2024-11-09 19:50:58,068 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 19:50:58,069 INFO L432 NwaCegarLoop]: 1136 mSDtfsCounter, 738 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:58,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1204 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:50:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2024-11-09 19:50:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 10388. [2024-11-09 19:50:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10387 states have (on average 1.9589871955328777) internal successors, (20348), 10387 states have internal predecessors, (20348), 0 states have call successors, (0), 0 states 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 19:50:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 20348 transitions. [2024-11-09 19:50:58,220 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 20348 transitions. Word has length 273 [2024-11-09 19:50:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:58,221 INFO L471 AbstractCegarLoop]: Abstraction has 10388 states and 20348 transitions. [2024-11-09 19:50:58,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 19:50:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 20348 transitions. [2024-11-09 19:50:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-09 19:50:58,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:58,226 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, 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, 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] [2024-11-09 19:50:58,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:50:58,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:58,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:58,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1267289316, now seen corresponding path program 1 times [2024-11-09 19:50:58,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:58,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031233142] [2024-11-09 19:50:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:50:58,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:58,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031233142] [2024-11-09 19:50:58,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031233142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:58,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:58,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:58,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540937196] [2024-11-09 19:50:58,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:58,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:58,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:58,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:58,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:58,587 INFO L87 Difference]: Start difference. First operand 10388 states and 20348 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:00,802 INFO L93 Difference]: Finished difference Result 24626 states and 48372 transitions. [2024-11-09 19:51:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:00,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-09 19:51:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:00,831 INFO L225 Difference]: With dead ends: 24626 [2024-11-09 19:51:00,831 INFO L226 Difference]: Without dead ends: 13807 [2024-11-09 19:51:00,842 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 19:51:00,843 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 802 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:00,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 301 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:51:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13807 states. [2024-11-09 19:51:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13807 to 12949. [2024-11-09 19:51:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 12948 states have (on average 1.9680259499536608) internal successors, (25482), 12948 states have internal predecessors, (25482), 0 states have call successors, (0), 0 states 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 19:51:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 25482 transitions. [2024-11-09 19:51:01,018 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 25482 transitions. Word has length 291 [2024-11-09 19:51:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:01,018 INFO L471 AbstractCegarLoop]: Abstraction has 12949 states and 25482 transitions. [2024-11-09 19:51:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 25482 transitions. [2024-11-09 19:51:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-09 19:51:01,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:01,023 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, 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, 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] [2024-11-09 19:51:01,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:51:01,024 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:01,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1208983541, now seen corresponding path program 1 times [2024-11-09 19:51:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030965957] [2024-11-09 19:51:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:01,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030965957] [2024-11-09 19:51:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030965957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:01,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:51:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225436212] [2024-11-09 19:51:01,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:01,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:01,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:01,546 INFO L87 Difference]: Start difference. First operand 12949 states and 25482 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 19:51:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:05,142 INFO L93 Difference]: Finished difference Result 46461 states and 91663 transitions. [2024-11-09 19:51:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:05,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 296 [2024-11-09 19:51:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:05,189 INFO L225 Difference]: With dead ends: 46461 [2024-11-09 19:51:05,189 INFO L226 Difference]: Without dead ends: 31793 [2024-11-09 19:51:05,211 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 19:51:05,212 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 1608 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4045 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 4045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:05,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 310 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 4045 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:51:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31793 states. [2024-11-09 19:51:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31793 to 31319. [2024-11-09 19:51:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31319 states, 31318 states have (on average 1.9501564595440322) internal successors, (61075), 31318 states have internal predecessors, (61075), 0 states have call successors, (0), 0 states 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 19:51:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31319 states to 31319 states and 61075 transitions. [2024-11-09 19:51:05,750 INFO L78 Accepts]: Start accepts. Automaton has 31319 states and 61075 transitions. Word has length 296 [2024-11-09 19:51:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:05,750 INFO L471 AbstractCegarLoop]: Abstraction has 31319 states and 61075 transitions. [2024-11-09 19:51:05,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 19:51:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 31319 states and 61075 transitions. [2024-11-09 19:51:05,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-11-09 19:51:05,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:05,759 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, 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, 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] [2024-11-09 19:51:05,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:51:05,759 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:05,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1239982207, now seen corresponding path program 1 times [2024-11-09 19:51:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705332054] [2024-11-09 19:51:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:51:06,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705332054] [2024-11-09 19:51:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705332054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:06,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145843874] [2024-11-09 19:51:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:06,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:06,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:06,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:06,022 INFO L87 Difference]: Start difference. First operand 31319 states and 61075 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:08,199 INFO L93 Difference]: Finished difference Result 69477 states and 135604 transitions. [2024-11-09 19:51:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:08,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-11-09 19:51:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:08,247 INFO L225 Difference]: With dead ends: 69477 [2024-11-09 19:51:08,247 INFO L226 Difference]: Without dead ends: 37731 [2024-11-09 19:51:08,270 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 19:51:08,271 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 835 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:08,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 308 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:51:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37731 states. [2024-11-09 19:51:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37731 to 31320. [2024-11-09 19:51:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31320 states, 31319 states have (on average 1.948880871036751) internal successors, (61037), 31319 states have internal predecessors, (61037), 0 states have call successors, (0), 0 states 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 19:51:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31320 states to 31320 states and 61037 transitions. [2024-11-09 19:51:09,048 INFO L78 Accepts]: Start accepts. Automaton has 31320 states and 61037 transitions. Word has length 348 [2024-11-09 19:51:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:09,052 INFO L471 AbstractCegarLoop]: Abstraction has 31320 states and 61037 transitions. [2024-11-09 19:51:09,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31320 states and 61037 transitions. [2024-11-09 19:51:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-09 19:51:09,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:09,078 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, 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, 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] [2024-11-09 19:51:09,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:51:09,078 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:09,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1821671490, now seen corresponding path program 1 times [2024-11-09 19:51:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181407750] [2024-11-09 19:51:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:09,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 204 proven. 83 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 19:51:09,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181407750] [2024-11-09 19:51:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181407750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:51:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121158039] [2024-11-09 19:51:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:09,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:51:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:09,816 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 19:51:09,817 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 19:51:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:10,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:51:10,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:51:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:10,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:51:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:10,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121158039] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:51:10,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:51:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-11-09 19:51:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701003695] [2024-11-09 19:51:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:51:10,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:51:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:51:10,954 INFO L87 Difference]: Start difference. First operand 31320 states and 61037 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 19:51:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:15,603 INFO L93 Difference]: Finished difference Result 87384 states and 170352 transitions. [2024-11-09 19:51:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:51:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 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 377 [2024-11-09 19:51:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:15,672 INFO L225 Difference]: With dead ends: 87384 [2024-11-09 19:51:15,672 INFO L226 Difference]: Without dead ends: 55212 [2024-11-09 19:51:15,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:51:15,697 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 2259 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 5902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:15,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 190 Invalid, 5902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:51:15,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55212 states. [2024-11-09 19:51:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55212 to 53490. [2024-11-09 19:51:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53490 states, 53489 states have (on average 1.9319299295182186) internal successors, (103337), 53489 states have internal predecessors, (103337), 0 states have call successors, (0), 0 states 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 19:51:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53490 states to 53490 states and 103337 transitions. [2024-11-09 19:51:16,776 INFO L78 Accepts]: Start accepts. Automaton has 53490 states and 103337 transitions. Word has length 377 [2024-11-09 19:51:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:16,777 INFO L471 AbstractCegarLoop]: Abstraction has 53490 states and 103337 transitions. [2024-11-09 19:51:16,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 19:51:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53490 states and 103337 transitions. [2024-11-09 19:51:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-09 19:51:16,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:16,793 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, 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, 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] [2024-11-09 19:51:16,817 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 19:51:16,993 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 19:51:16,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:16,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1791022730, now seen corresponding path program 1 times [2024-11-09 19:51:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925078624] [2024-11-09 19:51:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 19:51:17,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:17,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925078624] [2024-11-09 19:51:17,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925078624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:17,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:17,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746161996] [2024-11-09 19:51:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:17,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:17,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:17,395 INFO L87 Difference]: Start difference. First operand 53490 states and 103337 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 19:51:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:19,871 INFO L93 Difference]: Finished difference Result 121076 states and 234245 transitions. [2024-11-09 19:51:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:19,871 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 383 [2024-11-09 19:51:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:19,984 INFO L225 Difference]: With dead ends: 121076 [2024-11-09 19:51:19,984 INFO L226 Difference]: Without dead ends: 67159 [2024-11-09 19:51:20,009 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 19:51:20,009 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 755 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:20,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 342 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:51:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67159 states. [2024-11-09 19:51:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67159 to 66282. [2024-11-09 19:51:20,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66282 states, 66281 states have (on average 1.9224664685203905) internal successors, (127423), 66281 states have internal predecessors, (127423), 0 states have call successors, (0), 0 states 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 19:51:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66282 states to 66282 states and 127423 transitions. [2024-11-09 19:51:21,091 INFO L78 Accepts]: Start accepts. Automaton has 66282 states and 127423 transitions. Word has length 383 [2024-11-09 19:51:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:21,092 INFO L471 AbstractCegarLoop]: Abstraction has 66282 states and 127423 transitions. [2024-11-09 19:51:21,092 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 19:51:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 66282 states and 127423 transitions. [2024-11-09 19:51:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-09 19:51:21,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:21,101 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, 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, 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] [2024-11-09 19:51:21,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:51:21,101 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:21,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1659678071, now seen corresponding path program 1 times [2024-11-09 19:51:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:21,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000993872] [2024-11-09 19:51:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:21,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 307 proven. 30 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:51:22,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000993872] [2024-11-09 19:51:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000993872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:51:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592622912] [2024-11-09 19:51:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:22,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:51:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:22,393 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 19:51:22,394 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 19:51:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:22,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:51:22,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:51:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 393 proven. 83 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-09 19:51:22,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:51:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 393 proven. 83 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-09 19:51:23,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592622912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:51:23,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:51:23,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-09 19:51:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240600112] [2024-11-09 19:51:23,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:51:23,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:51:23,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:23,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:51:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:51:23,909 INFO L87 Difference]: Start difference. First operand 66282 states and 127423 transitions. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 19:51:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:41,202 INFO L93 Difference]: Finished difference Result 183810 states and 353188 transitions. [2024-11-09 19:51:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 19:51:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 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 417 [2024-11-09 19:51:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:41,418 INFO L225 Difference]: With dead ends: 183810 [2024-11-09 19:51:41,418 INFO L226 Difference]: Without dead ends: 115824 [2024-11-09 19:51:41,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2024-11-09 19:51:41,459 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 19971 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 21777 mSolverCounterSat, 1738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19971 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 23515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1738 IncrementalHoareTripleChecker+Valid, 21777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:41,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19971 Valid, 433 Invalid, 23515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1738 Valid, 21777 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2024-11-09 19:51:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115824 states. [2024-11-09 19:51:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115824 to 91004. [2024-11-09 19:51:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91004 states, 91003 states have (on average 1.908761249629133) internal successors, (173703), 91003 states have internal predecessors, (173703), 0 states have call successors, (0), 0 states 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 19:51:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91004 states to 91004 states and 173703 transitions. [2024-11-09 19:51:42,981 INFO L78 Accepts]: Start accepts. Automaton has 91004 states and 173703 transitions. Word has length 417 [2024-11-09 19:51:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:42,982 INFO L471 AbstractCegarLoop]: Abstraction has 91004 states and 173703 transitions. [2024-11-09 19:51:42,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 19:51:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 91004 states and 173703 transitions. [2024-11-09 19:51:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-09 19:51:42,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:42,991 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:51:43,006 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 19:51:43,191 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 19:51:43,191 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:43,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -82405171, now seen corresponding path program 1 times [2024-11-09 19:51:43,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:43,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479092927] [2024-11-09 19:51:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-09 19:51:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479092927] [2024-11-09 19:51:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479092927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:43,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:43,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:43,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500479416] [2024-11-09 19:51:43,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:43,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:43,810 INFO L87 Difference]: Start difference. First operand 91004 states and 173703 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)