./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label33.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/Problem12_label33.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 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:27:24,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:27:24,462 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:27:24,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:27:24,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:27:24,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:27:24,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:27:24,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:27:24,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:27:24,495 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:27:24,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:27:24,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:27:24,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:27:24,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:27:24,498 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:27:24,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:27:24,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:27:24,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:27:24,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:27:24,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:27:24,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:27:24,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:27:24,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:27:24,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:27:24,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:27:24,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:27:24,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:27:24,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:27:24,502 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:27:24,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:27:24,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:27:24,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:27:24,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:27:24,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:27:24,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:27:24,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:27:24,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:27:24,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:27:24,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:27:24,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:27:24,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:27:24,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:27:24,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 [2024-11-09 19:27:24,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:27:24,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:27:24,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:27:24,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:27:24,725 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:27:24,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-09 19:27:25,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:27:26,237 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:27:26,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-09 19:27:26,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909480a1e/16e71549aab044f69e7e4157f200971a/FLAGdbeb2061c [2024-11-09 19:27:26,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909480a1e/16e71549aab044f69e7e4157f200971a [2024-11-09 19:27:26,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:27:26,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:27:26,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:27:26,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:27:26,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:27:26,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:26" (1/1) ... [2024-11-09 19:27:26,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46608daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:26, skipping insertion in model container [2024-11-09 19:27:26,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:26" (1/1) ... [2024-11-09 19:27:26,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:27:26,593 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/Problem12_label33.c[6146,6159] [2024-11-09 19:27:27,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:27:27,116 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:27:27,139 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/Problem12_label33.c[6146,6159] [2024-11-09 19:27:27,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:27:27,488 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:27:27,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27 WrapperNode [2024-11-09 19:27:27,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:27:27,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:27:27,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:27:27,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:27:27,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:27,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:27,759 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:27:27,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:27:27,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:27:27,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:27:27,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:27:27,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:27,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:27,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:27,928 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 19:27:27,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:27,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:28,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:28,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:28,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:28,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:28,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:27:28,130 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:27:28,131 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:27:28,131 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:27:28,132 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (1/1) ... [2024-11-09 19:27:28,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:27:28,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:28,158 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 19:27:28,160 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 19:27:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:27:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:27:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:27:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:27:28,252 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:27:28,254 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:27:32,219 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:27:32,220 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:27:32,220 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:27:32,427 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:27:32,427 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:27:32,457 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:27:32,457 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:27:32,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:27:32 BoogieIcfgContainer [2024-11-09 19:27:32,458 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:27:32,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:27:32,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:27:32,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:27:32,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:27:26" (1/3) ... [2024-11-09 19:27:32,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c28828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:32, skipping insertion in model container [2024-11-09 19:27:32,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:27" (2/3) ... [2024-11-09 19:27:32,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c28828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:32, skipping insertion in model container [2024-11-09 19:27:32,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:27:32" (3/3) ... [2024-11-09 19:27:32,466 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2024-11-09 19:27:32,479 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:27:32,479 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:27:32,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:27:32,547 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;@c10d39c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:27:32,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:27:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 19:27:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 19:27:32,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:32,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:32,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:32,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 484462651, now seen corresponding path program 1 times [2024-11-09 19:27:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434343195] [2024-11-09 19:27:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:32,842 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 19:27:32,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:32,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434343195] [2024-11-09 19:27:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434343195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:32,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:32,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:27:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974308916] [2024-11-09 19:27:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:32,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:32,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:32,872 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 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 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 19:27:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:36,693 INFO L93 Difference]: Finished difference Result 2410 states and 6691 transitions. [2024-11-09 19:27:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:36,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-09 19:27:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:36,714 INFO L225 Difference]: With dead ends: 2410 [2024-11-09 19:27:36,715 INFO L226 Difference]: Without dead ends: 1509 [2024-11-09 19:27:36,719 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 19:27:36,721 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 1451 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:36,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 529 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:27:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-09 19:27:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-09 19:27:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.5072944297082227) internal successors, (3781), 1508 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states 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 19:27:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 3781 transitions. [2024-11-09 19:27:36,796 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 3781 transitions. Word has length 51 [2024-11-09 19:27:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:36,797 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 3781 transitions. [2024-11-09 19:27:36,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 19:27:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 3781 transitions. [2024-11-09 19:27:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 19:27:36,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:36,800 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, 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] [2024-11-09 19:27:36,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:27:36,800 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:36,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -477480276, now seen corresponding path program 1 times [2024-11-09 19:27:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830420586] [2024-11-09 19:27:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:27:37,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:37,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830420586] [2024-11-09 19:27:37,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830420586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:37,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:37,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:27:37,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662833958] [2024-11-09 19:27:37,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:37,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:27:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:27:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:37,208 INFO L87 Difference]: Start difference. First operand 1509 states and 3781 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 19:27:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:41,187 INFO L93 Difference]: Finished difference Result 3768 states and 9220 transitions. [2024-11-09 19:27:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:27:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-11-09 19:27:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:41,196 INFO L225 Difference]: With dead ends: 3768 [2024-11-09 19:27:41,196 INFO L226 Difference]: Without dead ends: 2261 [2024-11-09 19:27:41,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:27:41,199 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 2938 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 5413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:41,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 1175 Invalid, 5413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:27:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-09 19:27:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-09 19:27:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.3092920353982302) internal successors, (5219), 2260 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states 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 19:27:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 5219 transitions. [2024-11-09 19:27:41,239 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 5219 transitions. Word has length 127 [2024-11-09 19:27:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:41,241 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 5219 transitions. [2024-11-09 19:27:41,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 19:27:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 5219 transitions. [2024-11-09 19:27:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 19:27:41,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:41,246 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:41,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:27:41,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:41,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1549574450, now seen corresponding path program 1 times [2024-11-09 19:27:41,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:41,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818878775] [2024-11-09 19:27:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:41,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 19:27:41,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818878775] [2024-11-09 19:27:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818878775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349946102] [2024-11-09 19:27:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:41,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:41,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:41,610 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 19:27:41,611 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 19:27:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:41,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:41,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:27:41,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:41,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349946102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:41,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:41,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:27:41,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713115077] [2024-11-09 19:27:41,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:41,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:41,923 INFO L87 Difference]: Start difference. First operand 2261 states and 5219 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 19:27:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:44,929 INFO L93 Difference]: Finished difference Result 5272 states and 12775 transitions. [2024-11-09 19:27:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:44,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 193 [2024-11-09 19:27:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:44,943 INFO L225 Difference]: With dead ends: 5272 [2024-11-09 19:27:44,943 INFO L226 Difference]: Without dead ends: 3765 [2024-11-09 19:27:44,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:44,948 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 1380 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3827 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:44,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 305 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3827 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:27:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-09 19:27:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2024-11-09 19:27:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.3546758767268865) internal successors, (8863), 3764 states have internal predecessors, (8863), 0 states have call successors, (0), 0 states 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 19:27:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 8863 transitions. [2024-11-09 19:27:45,053 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 8863 transitions. Word has length 193 [2024-11-09 19:27:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:45,054 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 8863 transitions. [2024-11-09 19:27:45,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 19:27:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 8863 transitions. [2024-11-09 19:27:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-09 19:27:45,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:45,058 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:45,072 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 19:27:45,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:45,259 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:45,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash -675130729, now seen corresponding path program 1 times [2024-11-09 19:27:45,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:45,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567294471] [2024-11-09 19:27:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:45,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 19:27:45,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:45,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567294471] [2024-11-09 19:27:45,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567294471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:45,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:45,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:45,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601297464] [2024-11-09 19:27:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:45,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:27:45,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:27:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:27:45,527 INFO L87 Difference]: Start difference. First operand 3765 states and 8863 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 19:27:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:48,998 INFO L93 Difference]: Finished difference Result 8318 states and 19608 transitions. [2024-11-09 19:27:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:27:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 201 [2024-11-09 19:27:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:49,015 INFO L225 Difference]: With dead ends: 8318 [2024-11-09 19:27:49,015 INFO L226 Difference]: Without dead ends: 5269 [2024-11-09 19:27:49,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:27:49,018 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 1382 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5147 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 5419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 5147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:49,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 714 Invalid, 5419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 5147 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:27:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2024-11-09 19:27:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 4517. [2024-11-09 19:27:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4516 states have (on average 2.2779007971656333) internal successors, (10287), 4516 states have internal predecessors, (10287), 0 states have call successors, (0), 0 states 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 19:27:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 10287 transitions. [2024-11-09 19:27:49,079 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 10287 transitions. Word has length 201 [2024-11-09 19:27:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:49,080 INFO L471 AbstractCegarLoop]: Abstraction has 4517 states and 10287 transitions. [2024-11-09 19:27:49,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 19:27:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 10287 transitions. [2024-11-09 19:27:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-09 19:27:49,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:49,082 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:49,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:27:49,084 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:49,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1082844433, now seen corresponding path program 1 times [2024-11-09 19:27:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053001015] [2024-11-09 19:27:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 19:27:49,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053001015] [2024-11-09 19:27:49,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053001015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:49,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923424189] [2024-11-09 19:27:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:49,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:49,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:49,350 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 19:27:49,351 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 19:27:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:49,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:49,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:27:49,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:49,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923424189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:49,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:49,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:27:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581418982] [2024-11-09 19:27:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:49,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:49,682 INFO L87 Difference]: Start difference. First operand 4517 states and 10287 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 19:27:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:52,750 INFO L93 Difference]: Finished difference Result 10536 states and 24255 transitions. [2024-11-09 19:27:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:52,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 263 [2024-11-09 19:27:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:52,769 INFO L225 Difference]: With dead ends: 10536 [2024-11-09 19:27:52,770 INFO L226 Difference]: Without dead ends: 6773 [2024-11-09 19:27:52,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:52,774 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1378 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:52,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 430 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 19:27:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-09 19:27:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2024-11-09 19:27:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.100708800945068) internal successors, (14226), 6772 states have internal predecessors, (14226), 0 states have call successors, (0), 0 states 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 19:27:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 14226 transitions. [2024-11-09 19:27:52,870 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 14226 transitions. Word has length 263 [2024-11-09 19:27:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:52,870 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 14226 transitions. [2024-11-09 19:27:52,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 19:27:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 14226 transitions. [2024-11-09 19:27:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-09 19:27:52,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:52,875 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:52,890 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 19:27:53,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:53,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:53,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 512133399, now seen corresponding path program 1 times [2024-11-09 19:27:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120939557] [2024-11-09 19:27:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:27:53,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:53,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120939557] [2024-11-09 19:27:53,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120939557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:53,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:53,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:53,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150185086] [2024-11-09 19:27:53,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:53,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:27:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:53,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:27:53,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:27:53,300 INFO L87 Difference]: Start difference. First operand 6773 states and 14226 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 19:27:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:57,068 INFO L93 Difference]: Finished difference Result 17383 states and 36921 transitions. [2024-11-09 19:27:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:27:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 265 [2024-11-09 19:27:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:57,092 INFO L225 Difference]: With dead ends: 17383 [2024-11-09 19:27:57,092 INFO L226 Difference]: Without dead ends: 11288 [2024-11-09 19:27:57,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:27:57,100 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 1456 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5758 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 6300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 5758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:57,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 336 Invalid, 6300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 5758 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:27:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11288 states. [2024-11-09 19:27:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11288 to 10533. [2024-11-09 19:27:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 10532 states have (on average 2.0680782377516143) internal successors, (21781), 10532 states have internal predecessors, (21781), 0 states have call successors, (0), 0 states 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 19:27:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 21781 transitions. [2024-11-09 19:27:57,236 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 21781 transitions. Word has length 265 [2024-11-09 19:27:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:57,236 INFO L471 AbstractCegarLoop]: Abstraction has 10533 states and 21781 transitions. [2024-11-09 19:27:57,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 19:27:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 21781 transitions. [2024-11-09 19:27:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-09 19:27:57,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:57,240 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:57,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:27:57,240 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:57,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -542676512, now seen corresponding path program 1 times [2024-11-09 19:27:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:57,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901282696] [2024-11-09 19:27:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:57,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 19:27:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901282696] [2024-11-09 19:27:57,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901282696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:57,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:57,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66718026] [2024-11-09 19:27:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:57,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:57,372 INFO L87 Difference]: Start difference. First operand 10533 states and 21781 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 19:28:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:00,578 INFO L93 Difference]: Finished difference Result 30088 states and 62463 transitions. [2024-11-09 19:28:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:00,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 349 [2024-11-09 19:28:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:00,618 INFO L225 Difference]: With dead ends: 30088 [2024-11-09 19:28:00,619 INFO L226 Difference]: Without dead ends: 20309 [2024-11-09 19:28:00,630 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 19:28:00,631 INFO L432 NwaCegarLoop]: 2061 mSDtfsCounter, 1347 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4080 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 4441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:00,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 2071 Invalid, 4441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 4080 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:28:00,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2024-11-09 19:28:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 18053. [2024-11-09 19:28:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 2.0647573676046975) internal successors, (37273), 18052 states have internal predecessors, (37273), 0 states have call successors, (0), 0 states 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 19:28:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 37273 transitions. [2024-11-09 19:28:00,831 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 37273 transitions. Word has length 349 [2024-11-09 19:28:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:00,832 INFO L471 AbstractCegarLoop]: Abstraction has 18053 states and 37273 transitions. [2024-11-09 19:28:00,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 19:28:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 37273 transitions. [2024-11-09 19:28:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-09 19:28:00,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:00,836 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:28:00,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:28:00,836 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:00,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1044515988, now seen corresponding path program 1 times [2024-11-09 19:28:00,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472893924] [2024-11-09 19:28:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:28:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472893924] [2024-11-09 19:28:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472893924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:01,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294101692] [2024-11-09 19:28:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:01,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:01,107 INFO L87 Difference]: Start difference. First operand 18053 states and 37273 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 19:28:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:04,237 INFO L93 Difference]: Finished difference Result 43624 states and 90925 transitions. [2024-11-09 19:28:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 353 [2024-11-09 19:28:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:04,277 INFO L225 Difference]: With dead ends: 43624 [2024-11-09 19:28:04,278 INFO L226 Difference]: Without dead ends: 26325 [2024-11-09 19:28:04,288 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 19:28:04,289 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 1393 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:04,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 447 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:28:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26325 states. [2024-11-09 19:28:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26325 to 25573. [2024-11-09 19:28:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25573 states, 25572 states have (on average 2.0642890661661193) internal successors, (52788), 25572 states have internal predecessors, (52788), 0 states have call successors, (0), 0 states 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 19:28:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25573 states to 25573 states and 52788 transitions. [2024-11-09 19:28:04,662 INFO L78 Accepts]: Start accepts. Automaton has 25573 states and 52788 transitions. Word has length 353 [2024-11-09 19:28:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:04,663 INFO L471 AbstractCegarLoop]: Abstraction has 25573 states and 52788 transitions. [2024-11-09 19:28:04,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 19:28:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 25573 states and 52788 transitions. [2024-11-09 19:28:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-09 19:28:04,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:04,669 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:28:04,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:28:04,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:04,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash -225789248, now seen corresponding path program 1 times [2024-11-09 19:28:04,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:04,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279965368] [2024-11-09 19:28:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 143 proven. 110 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-09 19:28:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279965368] [2024-11-09 19:28:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279965368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:28:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463698357] [2024-11-09 19:28:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:04,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:28:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:28:04,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:28:04,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:28:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:05,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:28:05,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:28:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 19:28:05,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:28:05,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463698357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:05,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:28:05,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:28:05,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137979277] [2024-11-09 19:28:05,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:05,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:05,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:28:05,166 INFO L87 Difference]: Start difference. First operand 25573 states and 52788 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 19:28:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:08,126 INFO L93 Difference]: Finished difference Result 60920 states and 126977 transitions. [2024-11-09 19:28:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 381 [2024-11-09 19:28:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:08,172 INFO L225 Difference]: With dead ends: 60920 [2024-11-09 19:28:08,172 INFO L226 Difference]: Without dead ends: 36101 [2024-11-09 19:28:08,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:28:08,191 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 1470 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:08,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 238 Invalid, 4245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 19:28:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36101 states. [2024-11-09 19:28:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36101 to 36101. [2024-11-09 19:28:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36101 states, 36100 states have (on average 2.0553462603878114) internal successors, (74198), 36100 states have internal predecessors, (74198), 0 states have call successors, (0), 0 states 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 19:28:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36101 states to 36101 states and 74198 transitions. [2024-11-09 19:28:08,550 INFO L78 Accepts]: Start accepts. Automaton has 36101 states and 74198 transitions. Word has length 381 [2024-11-09 19:28:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:08,551 INFO L471 AbstractCegarLoop]: Abstraction has 36101 states and 74198 transitions. [2024-11-09 19:28:08,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 19:28:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 36101 states and 74198 transitions. [2024-11-09 19:28:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 19:28:08,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:08,555 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:28:08,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:28:08,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:28:08,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:08,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 133004236, now seen corresponding path program 1 times [2024-11-09 19:28:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338101473] [2024-11-09 19:28:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:28:09,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338101473] [2024-11-09 19:28:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338101473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:09,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:09,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:09,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346012970] [2024-11-09 19:28:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:09,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:09,040 INFO L87 Difference]: Start difference. First operand 36101 states and 74198 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 19:28:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:12,188 INFO L93 Difference]: Finished difference Result 104536 states and 215353 transitions. [2024-11-09 19:28:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 385 [2024-11-09 19:28:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:12,268 INFO L225 Difference]: With dead ends: 104536 [2024-11-09 19:28:12,269 INFO L226 Difference]: Without dead ends: 65429 [2024-11-09 19:28:12,476 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 19:28:12,478 INFO L432 NwaCegarLoop]: 1969 mSDtfsCounter, 1424 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 4180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:12,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 1979 Invalid, 4180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:28:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65429 states. [2024-11-09 19:28:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65429 to 62421. [2024-11-09 19:28:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62421 states, 62420 states have (on average 2.016917654597885) internal successors, (125896), 62420 states have internal predecessors, (125896), 0 states have call successors, (0), 0 states 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 19:28:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62421 states to 62421 states and 125896 transitions. [2024-11-09 19:28:13,033 INFO L78 Accepts]: Start accepts. Automaton has 62421 states and 125896 transitions. Word has length 385 [2024-11-09 19:28:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:13,033 INFO L471 AbstractCegarLoop]: Abstraction has 62421 states and 125896 transitions. [2024-11-09 19:28:13,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 19:28:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 62421 states and 125896 transitions. [2024-11-09 19:28:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-09 19:28:13,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:13,038 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, 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, 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] [2024-11-09 19:28:13,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:28:13,039 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:13,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1905564436, now seen corresponding path program 1 times [2024-11-09 19:28:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:13,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789107553] [2024-11-09 19:28:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:28:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:13,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789107553] [2024-11-09 19:28:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789107553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:13,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:13,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:13,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547472183] [2024-11-09 19:28:13,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:13,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:13,481 INFO L87 Difference]: Start difference. First operand 62421 states and 125896 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 19:28:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:16,848 INFO L93 Difference]: Finished difference Result 142888 states and 289773 transitions. [2024-11-09 19:28:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:16,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 409 [2024-11-09 19:28:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:16,948 INFO L225 Difference]: With dead ends: 142888 [2024-11-09 19:28:16,949 INFO L226 Difference]: Without dead ends: 81221 [2024-11-09 19:28:16,978 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 19:28:16,978 INFO L432 NwaCegarLoop]: 1937 mSDtfsCounter, 1354 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:16,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1947 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:28:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81221 states. [2024-11-09 19:28:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81221 to 78213. [2024-11-09 19:28:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78213 states, 78212 states have (on average 2.0061499514141055) internal successors, (156905), 78212 states have internal predecessors, (156905), 0 states have call successors, (0), 0 states 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 19:28:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78213 states to 78213 states and 156905 transitions. [2024-11-09 19:28:18,372 INFO L78 Accepts]: Start accepts. Automaton has 78213 states and 156905 transitions. Word has length 409 [2024-11-09 19:28:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:18,373 INFO L471 AbstractCegarLoop]: Abstraction has 78213 states and 156905 transitions. [2024-11-09 19:28:18,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 19:28:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 78213 states and 156905 transitions. [2024-11-09 19:28:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-09 19:28:18,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:18,381 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, 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, 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] [2024-11-09 19:28:18,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:28:18,381 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:18,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash 339109280, now seen corresponding path program 1 times [2024-11-09 19:28:18,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:18,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665470685] [2024-11-09 19:28:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-09 19:28:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665470685] [2024-11-09 19:28:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665470685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791946594] [2024-11-09 19:28:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:18,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:18,633 INFO L87 Difference]: Start difference. First operand 78213 states and 156905 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 19:28:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:22,236 INFO L93 Difference]: Finished difference Result 191016 states and 385161 transitions. [2024-11-09 19:28:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:22,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 413 [2024-11-09 19:28:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:22,385 INFO L225 Difference]: With dead ends: 191016 [2024-11-09 19:28:22,385 INFO L226 Difference]: Without dead ends: 113557 [2024-11-09 19:28:22,408 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 19:28:22,408 INFO L432 NwaCegarLoop]: 1979 mSDtfsCounter, 1374 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 4182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:22,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1989 Invalid, 4182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:28:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113557 states. [2024-11-09 19:28:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113557 to 109797. [2024-11-09 19:28:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109797 states, 109796 states have (on average 1.9943987030492913) internal successors, (218977), 109796 states have internal predecessors, (218977), 0 states have call successors, (0), 0 states 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 19:28:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109797 states to 109797 states and 218977 transitions. [2024-11-09 19:28:24,067 INFO L78 Accepts]: Start accepts. Automaton has 109797 states and 218977 transitions. Word has length 413 [2024-11-09 19:28:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:24,067 INFO L471 AbstractCegarLoop]: Abstraction has 109797 states and 218977 transitions. [2024-11-09 19:28:24,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 19:28:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 109797 states and 218977 transitions. [2024-11-09 19:28:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-09 19:28:24,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:24,075 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:24,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:28:24,075 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:24,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash 538324484, now seen corresponding path program 1 times [2024-11-09 19:28:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:24,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628120341] [2024-11-09 19:28:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:24,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 427 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:28:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628120341] [2024-11-09 19:28:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628120341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:28:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653480210] [2024-11-09 19:28:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:28:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:28:25,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:28:25,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:28:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:25,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:28:25,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:28:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 19:28:25,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:28:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653480210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:28:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 19:28:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093368988] [2024-11-09 19:28:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:25,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:28:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:28:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:28:25,764 INFO L87 Difference]: Start difference. First operand 109797 states and 218977 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 19:28:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:31,801 INFO L93 Difference]: Finished difference Result 334651 states and 668468 transitions. [2024-11-09 19:28:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:28:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 489 [2024-11-09 19:28:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:32,127 INFO L225 Difference]: With dead ends: 334651 [2024-11-09 19:28:32,127 INFO L226 Difference]: Without dead ends: 225608 [2024-11-09 19:28:32,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:28:32,180 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3212 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 7313 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3212 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 7929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 7313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:32,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3212 Valid, 37 Invalid, 7929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 7313 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 19:28:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225608 states. [2024-11-09 19:28:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225608 to 224853. [2024-11-09 19:28:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224853 states, 224852 states have (on average 1.9943562876914593) internal successors, (448435), 224852 states have internal predecessors, (448435), 0 states have call successors, (0), 0 states 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 19:28:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224853 states to 224853 states and 448435 transitions. [2024-11-09 19:28:35,815 INFO L78 Accepts]: Start accepts. Automaton has 224853 states and 448435 transitions. Word has length 489 [2024-11-09 19:28:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:35,815 INFO L471 AbstractCegarLoop]: Abstraction has 224853 states and 448435 transitions. [2024-11-09 19:28:35,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 19:28:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 224853 states and 448435 transitions. [2024-11-09 19:28:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2024-11-09 19:28:35,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:35,839 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:28:35,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:28:36,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:28:36,040 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:36,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -384492938, now seen corresponding path program 1 times [2024-11-09 19:28:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:36,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104716397] [2024-11-09 19:28:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 1048 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-09 19:28:36,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:36,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104716397] [2024-11-09 19:28:36,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104716397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:36,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:28:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681641487] [2024-11-09 19:28:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:36,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:28:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:28:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:28:36,571 INFO L87 Difference]: Start difference. First operand 224853 states and 448435 transitions. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 19:28:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:43,319 INFO L93 Difference]: Finished difference Result 533928 states and 1069944 transitions. [2024-11-09 19:28:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:28:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 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 620 [2024-11-09 19:28:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:43,748 INFO L225 Difference]: With dead ends: 533928 [2024-11-09 19:28:43,748 INFO L226 Difference]: Without dead ends: 309829 [2024-11-09 19:28:43,814 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 19:28:43,814 INFO L432 NwaCegarLoop]: 1956 mSDtfsCounter, 2689 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6722 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2689 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 7547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 6722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:43,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2689 Valid, 1971 Invalid, 7547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 6722 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-09 19:28:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309829 states.