./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-22.i -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 9851c0f9ab930af20c037ab1e499f4c9a2b58cea1e3329cd85ff2166a0e5d289 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 16:19:14,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 16:19:15,027 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 16:19:15,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 16:19:15,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 16:19:15,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 16:19:15,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 16:19:15,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 16:19:15,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 16:19:15,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 16:19:15,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 16:19:15,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 16:19:15,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 16:19:15,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 16:19:15,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 16:19:15,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 16:19:15,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 16:19:15,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 16:19:15,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 16:19:15,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 16:19:15,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 16:19:15,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 16:19:15,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 16:19:15,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 16:19:15,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 16:19:15,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 16:19:15,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 16:19:15,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 16:19:15,056 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 16:19:15,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 16:19:15,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 16:19:15,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 16:19:15,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:19:15,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 16:19:15,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 16:19:15,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 16:19:15,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 16:19:15,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 16:19:15,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 16:19:15,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 16:19:15,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 16:19:15,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 16:19:15,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851c0f9ab930af20c037ab1e499f4c9a2b58cea1e3329cd85ff2166a0e5d289 [2024-11-16 16:19:15,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 16:19:15,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 16:19:15,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 16:19:15,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 16:19:15,295 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 16:19:15,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-22.i [2024-11-16 16:19:16,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 16:19:16,726 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 16:19:16,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-22.i [2024-11-16 16:19:16,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8b4383b/871e34574a6f433fa33e8a647b13a131/FLAG776a0ec03 [2024-11-16 16:19:16,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8b4383b/871e34574a6f433fa33e8a647b13a131 [2024-11-16 16:19:16,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 16:19:16,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 16:19:16,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 16:19:16,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 16:19:16,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 16:19:16,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:16" (1/1) ... [2024-11-16 16:19:16,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fe30a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:16, skipping insertion in model container [2024-11-16 16:19:16,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:16" (1/1) ... [2024-11-16 16:19:16,773 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 16:19:16,899 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-22.i[915,928] [2024-11-16 16:19:16,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:19:16,957 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 16:19:16,966 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-22.i[915,928] [2024-11-16 16:19:16,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:19:17,032 INFO L204 MainTranslator]: Completed translation [2024-11-16 16:19:17,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17 WrapperNode [2024-11-16 16:19:17,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 16:19:17,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 16:19:17,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 16:19:17,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 16:19:17,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,082 INFO L138 Inliner]: procedures = 26, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111 [2024-11-16 16:19:17,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 16:19:17,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 16:19:17,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 16:19:17,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 16:19:17,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,109 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 16:19:17,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,115 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 16:19:17,120 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 16:19:17,120 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 16:19:17,120 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 16:19:17,121 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (1/1) ... [2024-11-16 16:19:17,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:19:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:19:17,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 16:19:17,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 16:19:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 16:19:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 16:19:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 16:19:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 16:19:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 16:19:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 16:19:17,275 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 16:19:17,278 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 16:19:17,480 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L80: havoc property_#t~bitwise10#1;havoc property_#t~short11#1; [2024-11-16 16:19:17,507 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-16 16:19:17,507 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 16:19:17,525 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 16:19:17,525 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 16:19:17,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:19:17 BoogieIcfgContainer [2024-11-16 16:19:17,525 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 16:19:17,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 16:19:17,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 16:19:17,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 16:19:17,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:19:16" (1/3) ... [2024-11-16 16:19:17,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d731793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:17, skipping insertion in model container [2024-11-16 16:19:17,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:17" (2/3) ... [2024-11-16 16:19:17,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d731793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:17, skipping insertion in model container [2024-11-16 16:19:17,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:19:17" (3/3) ... [2024-11-16 16:19:17,534 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-22.i [2024-11-16 16:19:17,550 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 16:19:17,551 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 16:19:17,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 16:19:17,605 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;@3cdaf81b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 16:19:17,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 16:19:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 42 states have internal predecessors, (57), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 16:19:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 16:19:17,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:17,622 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:17,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:17,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 57551535, now seen corresponding path program 1 times [2024-11-16 16:19:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:17,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282638560] [2024-11-16 16:19:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:17,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282638560] [2024-11-16 16:19:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282638560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:17,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:17,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 16:19:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302577672] [2024-11-16 16:19:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:17,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 16:19:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:17,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 16:19:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 16:19:17,929 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 42 states have internal predecessors, (57), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 16:19:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:17,952 INFO L93 Difference]: Finished difference Result 96 states and 143 transitions. [2024-11-16 16:19:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 16:19:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-11-16 16:19:17,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:17,962 INFO L225 Difference]: With dead ends: 96 [2024-11-16 16:19:17,962 INFO L226 Difference]: Without dead ends: 44 [2024-11-16 16:19:17,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 16:19:17,970 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:17,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:19:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-16 16:19:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-16 16:19:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 16:19:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-11-16 16:19:18,016 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 60 [2024-11-16 16:19:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:18,017 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-11-16 16:19:18,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 16:19:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-11-16 16:19:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 16:19:18,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:18,020 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:18,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 16:19:18,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:18,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash -792618965, now seen corresponding path program 1 times [2024-11-16 16:19:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:18,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063586677] [2024-11-16 16:19:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063586677] [2024-11-16 16:19:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063586677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 16:19:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905459069] [2024-11-16 16:19:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:18,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 16:19:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 16:19:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:19:18,610 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:18,785 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2024-11-16 16:19:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 16:19:18,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2024-11-16 16:19:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:18,788 INFO L225 Difference]: With dead ends: 150 [2024-11-16 16:19:18,789 INFO L226 Difference]: Without dead ends: 109 [2024-11-16 16:19:18,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 16:19:18,792 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 89 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:18,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 170 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 16:19:18,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-16 16:19:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2024-11-16 16:19:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 58 states have internal predecessors, (72), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-16 16:19:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2024-11-16 16:19:18,811 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 60 [2024-11-16 16:19:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:18,812 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2024-11-16 16:19:18,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2024-11-16 16:19:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 16:19:18,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:18,815 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:18,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 16:19:18,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:18,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1254550762, now seen corresponding path program 1 times [2024-11-16 16:19:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553770403] [2024-11-16 16:19:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:18,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:19,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:19,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553770403] [2024-11-16 16:19:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553770403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:19,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 16:19:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929494731] [2024-11-16 16:19:19,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:19,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 16:19:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:19,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 16:19:19,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 16:19:19,073 INFO L87 Difference]: Start difference. First operand 75 states and 100 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:19,215 INFO L93 Difference]: Finished difference Result 143 states and 191 transitions. [2024-11-16 16:19:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 16:19:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-16 16:19:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:19,217 INFO L225 Difference]: With dead ends: 143 [2024-11-16 16:19:19,217 INFO L226 Difference]: Without dead ends: 91 [2024-11-16 16:19:19,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:19:19,218 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:19,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 153 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 16:19:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-16 16:19:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2024-11-16 16:19:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-16 16:19:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2024-11-16 16:19:19,243 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 61 [2024-11-16 16:19:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:19,243 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2024-11-16 16:19:19,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2024-11-16 16:19:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 16:19:19,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:19,245 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:19,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 16:19:19,245 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:19,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash -387979748, now seen corresponding path program 1 times [2024-11-16 16:19:19,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:19,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609551784] [2024-11-16 16:19:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:19,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:19,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609551784] [2024-11-16 16:19:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609551784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:19,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:19,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 16:19:19,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031158607] [2024-11-16 16:19:19,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:19,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 16:19:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 16:19:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:19:19,562 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:19,765 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2024-11-16 16:19:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 16:19:19,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-16 16:19:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:19,768 INFO L225 Difference]: With dead ends: 206 [2024-11-16 16:19:19,768 INFO L226 Difference]: Without dead ends: 165 [2024-11-16 16:19:19,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 16:19:19,769 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 106 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:19,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 227 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 16:19:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-16 16:19:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 121. [2024-11-16 16:19:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 16:19:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2024-11-16 16:19:19,808 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 61 [2024-11-16 16:19:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:19,811 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2024-11-16 16:19:19,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2024-11-16 16:19:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 16:19:19,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:19,812 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:19,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 16:19:19,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:19,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:19,814 INFO L85 PathProgramCache]: Analyzing trace with hash -893538373, now seen corresponding path program 1 times [2024-11-16 16:19:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419993760] [2024-11-16 16:19:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:19,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:19,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419993760] [2024-11-16 16:19:19,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419993760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:19,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:19,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 16:19:19,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259508875] [2024-11-16 16:19:19,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:19,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 16:19:19,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 16:19:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:19:19,870 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:19,895 INFO L93 Difference]: Finished difference Result 194 states and 257 transitions. [2024-11-16 16:19:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 16:19:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-16 16:19:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:19,897 INFO L225 Difference]: With dead ends: 194 [2024-11-16 16:19:19,897 INFO L226 Difference]: Without dead ends: 153 [2024-11-16 16:19:19,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:19:19,898 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 27 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:19,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 122 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:19:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-16 16:19:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2024-11-16 16:19:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 100 states have (on average 1.24) internal successors, (124), 100 states have internal predecessors, (124), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 16:19:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2024-11-16 16:19:19,923 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 61 [2024-11-16 16:19:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:19,923 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2024-11-16 16:19:19,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2024-11-16 16:19:19,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 16:19:19,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:19,924 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:19,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 16:19:19,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:19,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1595636923, now seen corresponding path program 1 times [2024-11-16 16:19:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:19,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798883003] [2024-11-16 16:19:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:20,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798883003] [2024-11-16 16:19:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798883003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:20,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 16:19:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199474940] [2024-11-16 16:19:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:20,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 16:19:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 16:19:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 16:19:20,966 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:21,179 INFO L93 Difference]: Finished difference Result 357 states and 468 transitions. [2024-11-16 16:19:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 16:19:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2024-11-16 16:19:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:21,182 INFO L225 Difference]: With dead ends: 357 [2024-11-16 16:19:21,183 INFO L226 Difference]: Without dead ends: 255 [2024-11-16 16:19:21,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-16 16:19:21,184 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 181 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:21,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 343 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 16:19:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-16 16:19:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 116. [2024-11-16 16:19:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 91 states have internal predecessors, (110), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 16:19:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2024-11-16 16:19:21,206 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 62 [2024-11-16 16:19:21,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:21,207 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2024-11-16 16:19:21,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2024-11-16 16:19:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 16:19:21,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:21,208 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:21,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 16:19:21,208 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:21,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1984400745, now seen corresponding path program 1 times [2024-11-16 16:19:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:21,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336725593] [2024-11-16 16:19:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:21,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336725593] [2024-11-16 16:19:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336725593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 16:19:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304895334] [2024-11-16 16:19:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:21,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 16:19:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 16:19:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:19:21,267 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:21,306 INFO L93 Difference]: Finished difference Result 288 states and 381 transitions. [2024-11-16 16:19:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 16:19:21,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2024-11-16 16:19:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:21,307 INFO L225 Difference]: With dead ends: 288 [2024-11-16 16:19:21,307 INFO L226 Difference]: Without dead ends: 195 [2024-11-16 16:19:21,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:19:21,309 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:21,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 98 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:19:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-16 16:19:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2024-11-16 16:19:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.205298013245033) internal successors, (182), 151 states have internal predecessors, (182), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-16 16:19:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2024-11-16 16:19:21,325 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 62 [2024-11-16 16:19:21,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:21,325 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2024-11-16 16:19:21,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2024-11-16 16:19:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 16:19:21,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:21,326 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:21,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 16:19:21,326 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:21,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:21,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1066285672, now seen corresponding path program 1 times [2024-11-16 16:19:21,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:21,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953069201] [2024-11-16 16:19:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:21,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:22,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953069201] [2024-11-16 16:19:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953069201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:22,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:22,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 16:19:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915946808] [2024-11-16 16:19:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:22,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 16:19:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 16:19:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-16 16:19:22,840 INFO L87 Difference]: Start difference. First operand 192 states and 252 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 16:19:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:23,407 INFO L93 Difference]: Finished difference Result 391 states and 503 transitions. [2024-11-16 16:19:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 16:19:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-16 16:19:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:23,409 INFO L225 Difference]: With dead ends: 391 [2024-11-16 16:19:23,409 INFO L226 Difference]: Without dead ends: 310 [2024-11-16 16:19:23,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-16 16:19:23,411 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 219 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:23,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 282 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 16:19:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-16 16:19:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 246. [2024-11-16 16:19:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 197 states have (on average 1.218274111675127) internal successors, (240), 197 states have internal predecessors, (240), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-16 16:19:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 324 transitions. [2024-11-16 16:19:23,429 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 324 transitions. Word has length 63 [2024-11-16 16:19:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:23,430 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 324 transitions. [2024-11-16 16:19:23,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 16:19:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 324 transitions. [2024-11-16 16:19:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 16:19:23,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:23,431 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 16:19:23,431 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:23,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1359688679, now seen corresponding path program 1 times [2024-11-16 16:19:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878144626] [2024-11-16 16:19:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:23,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878144626] [2024-11-16 16:19:23,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878144626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:23,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 16:19:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245373131] [2024-11-16 16:19:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:23,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 16:19:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 16:19:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:19:23,473 INFO L87 Difference]: Start difference. First operand 246 states and 324 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:23,511 INFO L93 Difference]: Finished difference Result 386 states and 507 transitions. [2024-11-16 16:19:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 16:19:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2024-11-16 16:19:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:23,513 INFO L225 Difference]: With dead ends: 386 [2024-11-16 16:19:23,513 INFO L226 Difference]: Without dead ends: 163 [2024-11-16 16:19:23,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:19:23,514 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:23,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:19:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-16 16:19:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2024-11-16 16:19:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.1596638655462186) internal successors, (138), 119 states have internal predecessors, (138), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-16 16:19:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 194 transitions. [2024-11-16 16:19:23,526 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 194 transitions. Word has length 63 [2024-11-16 16:19:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:23,527 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 194 transitions. [2024-11-16 16:19:23,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 194 transitions. [2024-11-16 16:19:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 16:19:23,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:23,528 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:23,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 16:19:23,528 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:23,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash -886784451, now seen corresponding path program 1 times [2024-11-16 16:19:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144915233] [2024-11-16 16:19:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:24,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144915233] [2024-11-16 16:19:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144915233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:24,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:24,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-16 16:19:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793881965] [2024-11-16 16:19:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:24,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 16:19:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:24,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 16:19:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-16 16:19:24,513 INFO L87 Difference]: Start difference. First operand 152 states and 194 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:24,932 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2024-11-16 16:19:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 16:19:24,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2024-11-16 16:19:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:24,934 INFO L225 Difference]: With dead ends: 214 [2024-11-16 16:19:24,935 INFO L226 Difference]: Without dead ends: 211 [2024-11-16 16:19:24,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-16 16:19:24,936 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 128 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:24,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 508 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 16:19:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-16 16:19:24,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 152. [2024-11-16 16:19:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.1512605042016806) internal successors, (137), 119 states have internal predecessors, (137), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-16 16:19:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 193 transitions. [2024-11-16 16:19:24,949 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 193 transitions. Word has length 65 [2024-11-16 16:19:24,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:24,950 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 193 transitions. [2024-11-16 16:19:24,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 193 transitions. [2024-11-16 16:19:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 16:19:24,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:24,951 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:24,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 16:19:24,951 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:24,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2103576822, now seen corresponding path program 1 times [2024-11-16 16:19:24,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:24,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723654625] [2024-11-16 16:19:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:24,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 16:19:25,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723654625] [2024-11-16 16:19:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723654625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:25,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:19:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 16:19:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354840359] [2024-11-16 16:19:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:25,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 16:19:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 16:19:25,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 16:19:25,345 INFO L87 Difference]: Start difference. First operand 152 states and 193 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:25,530 INFO L93 Difference]: Finished difference Result 161 states and 201 transitions. [2024-11-16 16:19:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 16:19:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2024-11-16 16:19:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:25,531 INFO L225 Difference]: With dead ends: 161 [2024-11-16 16:19:25,531 INFO L226 Difference]: Without dead ends: 158 [2024-11-16 16:19:25,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-16 16:19:25,532 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 60 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:25,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 443 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 16:19:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-16 16:19:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2024-11-16 16:19:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 122 states have internal predecessors, (140), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-16 16:19:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 196 transitions. [2024-11-16 16:19:25,549 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 196 transitions. Word has length 66 [2024-11-16 16:19:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:25,549 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 196 transitions. [2024-11-16 16:19:25,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 16:19:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 196 transitions. [2024-11-16 16:19:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 16:19:25,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:19:25,550 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:25,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 16:19:25,551 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:19:25,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:19:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash 990101959, now seen corresponding path program 1 times [2024-11-16 16:19:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:19:25,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135984753] [2024-11-16 16:19:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:19:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:19:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:19:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:19:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:19:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:19:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 16:19:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 16:19:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 16:19:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 16:19:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 16:19:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-16 16:19:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 16:19:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 16:19:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 16:19:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-16 16:19:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:19:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135984753] [2024-11-16 16:19:25,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135984753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 16:19:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649928252] [2024-11-16 16:19:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:19:25,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 16:19:25,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:19:25,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 16:19:25,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 16:19:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:19:25,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 16:19:25,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 16:19:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-16 16:19:25,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 16:19:25,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649928252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:19:25,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 16:19:25,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-16 16:19:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428249428] [2024-11-16 16:19:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:19:25,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 16:19:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:19:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 16:19:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:19:25,878 INFO L87 Difference]: Start difference. First operand 155 states and 196 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-16 16:19:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:19:25,905 INFO L93 Difference]: Finished difference Result 182 states and 224 transitions. [2024-11-16 16:19:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 16:19:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2024-11-16 16:19:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:19:25,906 INFO L225 Difference]: With dead ends: 182 [2024-11-16 16:19:25,906 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 16:19:25,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:19:25,907 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:19:25,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 88 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:19:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 16:19:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 16:19:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 16:19:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 16:19:25,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2024-11-16 16:19:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:19:25,908 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 16:19:25,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-16 16:19:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 16:19:25,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 16:19:25,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 16:19:25,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 16:19:26,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 16:19:26,115 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:19:26,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 16:19:26,494 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 16:19:26,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:19:26 BoogieIcfgContainer [2024-11-16 16:19:26,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 16:19:26,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 16:19:26,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 16:19:26,519 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 16:19:26,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:19:17" (3/4) ... [2024-11-16 16:19:26,521 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 16:19:26,524 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-16 16:19:26,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-16 16:19:26,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 16:19:26,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 16:19:26,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 16:19:26,617 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 16:19:26,618 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 16:19:26,618 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 16:19:26,619 INFO L158 Benchmark]: Toolchain (without parser) took 9869.91ms. Allocated memory was 155.2MB in the beginning and 375.4MB in the end (delta: 220.2MB). Free memory was 84.7MB in the beginning and 246.3MB in the end (delta: -161.5MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,619 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 155.2MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 16:19:26,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.10ms. Allocated memory is still 155.2MB. Free memory was 84.4MB in the beginning and 124.6MB in the end (delta: -40.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.67ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 124.5MB in the beginning and 187.2MB in the end (delta: -62.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,621 INFO L158 Benchmark]: Boogie Preprocessor took 35.57ms. Allocated memory is still 216.0MB. Free memory was 187.2MB in the beginning and 185.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,621 INFO L158 Benchmark]: IcfgBuilder took 405.24ms. Allocated memory is still 216.0MB. Free memory was 184.0MB in the beginning and 166.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,621 INFO L158 Benchmark]: TraceAbstraction took 8990.41ms. Allocated memory was 216.0MB in the beginning and 375.4MB in the end (delta: 159.4MB). Free memory was 166.2MB in the beginning and 251.5MB in the end (delta: -85.3MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,621 INFO L158 Benchmark]: Witness Printer took 99.78ms. Allocated memory is still 375.4MB. Free memory was 251.5MB in the beginning and 246.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 16:19:26,622 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 155.2MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.10ms. Allocated memory is still 155.2MB. Free memory was 84.4MB in the beginning and 124.6MB in the end (delta: -40.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.67ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 124.5MB in the beginning and 187.2MB in the end (delta: -62.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.57ms. Allocated memory is still 216.0MB. Free memory was 187.2MB in the beginning and 185.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 405.24ms. Allocated memory is still 216.0MB. Free memory was 184.0MB in the beginning and 166.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8990.41ms. Allocated memory was 216.0MB in the beginning and 375.4MB in the end (delta: 159.4MB). Free memory was 166.2MB in the beginning and 251.5MB in the end (delta: -85.3MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. * Witness Printer took 99.78ms. Allocated memory is still 375.4MB. Free memory was 251.5MB in the beginning and 246.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 12, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 907 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 907 mSDsluCounter, 2584 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1818 mSDsCounter, 207 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1246 IncrementalHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 207 mSolverCounterUnsat, 766 mSDtfsCounter, 1246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred in iteration=8, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 412 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 926 NumberOfCodeBlocks, 926 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 913 ConstructedInterpolants, 0 QuantifiedInterpolants, 4283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 273 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1704/1706 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: ((((((0 <= 0) && ((5 + var_1_1) == 0)) && (last_1_var_1_11 <= 8)) && (256 == var_1_5)) && (8 == var_1_11)) && (256 == last_1_var_1_5)) Ensures: (((((((0 <= 0) && ((5 + var_1_1) == 0)) && (last_1_var_1_11 <= 8)) && (256 == var_1_5)) && (8 == var_1_11)) && (256 == last_1_var_1_5)) && ((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_4 == \old(var_1_4))) && (var_1_5 == \old(var_1_5))) && (var_1_6 == \old(var_1_6))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8))) && (var_1_9 == \old(var_1_9))) && (var_1_10 == \old(var_1_10))) && (var_1_11 == \old(var_1_11))) && (last_1_var_1_5 == \old(last_1_var_1_5))) && (last_1_var_1_11 == \old(last_1_var_1_11)))) RESULT: Ultimate proved your program to be correct! [2024-11-16 16:19:26,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE