./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_operatoramount_amount250_file-43.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 795f4667c1e1102b044359aec08de90b52cc6317a469c691f5b4c1088e37925d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:43:44,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:43:44,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:43:44,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:43:44,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:43:44,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:43:44,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:43:44,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:43:44,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:43:44,562 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:43:44,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:43:44,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:43:44,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:43:44,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:43:44,564 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:43:44,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:43:44,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:43:44,567 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:43:44,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:43:44,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:43:44,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:43:44,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:43:44,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:43:44,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:43:44,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:43:44,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:43:44,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:43:44,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:43:44,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:43:44,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:43:44,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:43:44,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:43:44,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:43:44,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:43:44,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:43:44,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:43:44,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:43:44,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:43:44,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:43:44,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:43:44,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:43:44,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:43:44,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795f4667c1e1102b044359aec08de90b52cc6317a469c691f5b4c1088e37925d [2024-11-18 23:43:44,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:43:44,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:43:44,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:43:44,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:43:44,854 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:43:44,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2024-11-18 23:43:46,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:43:46,591 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:43:46,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2024-11-18 23:43:46,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fedd6d3/2da5adc504f84a3e9b43de8d8161a7e0/FLAG83703ee93 [2024-11-18 23:43:46,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fedd6d3/2da5adc504f84a3e9b43de8d8161a7e0 [2024-11-18 23:43:46,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:43:46,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:43:46,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:43:46,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:43:46,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:43:46,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:46" (1/1) ... [2024-11-18 23:43:46,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@835feee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:46, skipping insertion in model container [2024-11-18 23:43:46,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:46" (1/1) ... [2024-11-18 23:43:46,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:43:47,151 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_operatoramount_amount250_file-43.i[916,929] [2024-11-18 23:43:47,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:43:47,380 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:43:47,394 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_operatoramount_amount250_file-43.i[916,929] [2024-11-18 23:43:47,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:43:47,558 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:43:47,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47 WrapperNode [2024-11-18 23:43:47,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:43:47,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:43:47,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:43:47,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:43:47,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,674 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 529 [2024-11-18 23:43:47,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:43:47,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:43:47,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:43:47,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:43:47,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,761 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]. [2024-11-18 23:43:47,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:43:47,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:43:47,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:43:47,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:43:47,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (1/1) ... [2024-11-18 23:43:47,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:43:47,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:47,877 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) [2024-11-18 23:43:47,881 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 [2024-11-18 23:43:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:43:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:43:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:43:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:43:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:43:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:43:48,044 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:43:48,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:43:49,064 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-18 23:43:49,064 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:43:49,090 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:43:49,092 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:43:49,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:49 BoogieIcfgContainer [2024-11-18 23:43:49,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:43:49,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:43:49,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:43:49,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:43:49,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:43:46" (1/3) ... [2024-11-18 23:43:49,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2546653a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:49, skipping insertion in model container [2024-11-18 23:43:49,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:47" (2/3) ... [2024-11-18 23:43:49,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2546653a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:49, skipping insertion in model container [2024-11-18 23:43:49,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:49" (3/3) ... [2024-11-18 23:43:49,102 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i [2024-11-18 23:43:49,119 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:43:49,120 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:43:49,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:43:49,206 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;@51cc8a10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:43:49,206 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:43:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 158 states have (on average 1.4746835443037976) internal successors, (233), 159 states have internal predecessors, (233), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 23:43:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 23:43:49,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:49,239 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:49,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:49,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash -886906033, now seen corresponding path program 1 times [2024-11-18 23:43:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:49,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271331455] [2024-11-18 23:43:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2024-11-18 23:43:49,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271331455] [2024-11-18 23:43:49,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271331455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:49,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226128873] [2024-11-18 23:43:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:49,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:49,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:49,963 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) [2024-11-18 23:43:49,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:43:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:50,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:43:50,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2024-11-18 23:43:50,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:43:50,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226128873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:50,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:43:50,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:43:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394790181] [2024-11-18 23:43:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:50,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:43:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:43:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:43:50,456 INFO L87 Difference]: Start difference. First operand has 224 states, 158 states have (on average 1.4746835443037976) internal successors, (233), 159 states have internal predecessors, (233), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2024-11-18 23:43:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:50,522 INFO L93 Difference]: Finished difference Result 441 states and 775 transitions. [2024-11-18 23:43:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:43:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) Word has length 411 [2024-11-18 23:43:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:50,536 INFO L225 Difference]: With dead ends: 441 [2024-11-18 23:43:50,536 INFO L226 Difference]: Without dead ends: 220 [2024-11-18 23:43:50,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:43:50,546 INFO L432 NwaCegarLoop]: 351 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, 351 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 [2024-11-18 23:43:50,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:43:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-18 23:43:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-18 23:43:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 155 states have (on average 1.4516129032258065) internal successors, (225), 155 states have internal predecessors, (225), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 23:43:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 351 transitions. [2024-11-18 23:43:50,632 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 351 transitions. Word has length 411 [2024-11-18 23:43:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:50,633 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 351 transitions. [2024-11-18 23:43:50,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2024-11-18 23:43:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 351 transitions. [2024-11-18 23:43:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 23:43:50,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:50,659 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:50,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:43:50,863 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,SelfDestructingSolverStorable0 [2024-11-18 23:43:50,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:50,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1497484953, now seen corresponding path program 1 times [2024-11-18 23:43:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320478468] [2024-11-18 23:43:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-11-18 23:43:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320478468] [2024-11-18 23:43:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320478468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:51,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:51,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:43:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958561299] [2024-11-18 23:43:51,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:51,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:43:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:43:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:51,379 INFO L87 Difference]: Start difference. First operand 220 states and 351 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:51,498 INFO L93 Difference]: Finished difference Result 654 states and 1047 transitions. [2024-11-18 23:43:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:43:51,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 411 [2024-11-18 23:43:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:51,508 INFO L225 Difference]: With dead ends: 654 [2024-11-18 23:43:51,511 INFO L226 Difference]: Without dead ends: 437 [2024-11-18 23:43:51,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:51,514 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 222 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:51,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 795 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:43:51,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-18 23:43:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 435. [2024-11-18 23:43:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 306 states have (on average 1.4444444444444444) internal successors, (442), 306 states have internal predecessors, (442), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 23:43:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 694 transitions. [2024-11-18 23:43:51,630 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 694 transitions. Word has length 411 [2024-11-18 23:43:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:51,633 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 694 transitions. [2024-11-18 23:43:51,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 694 transitions. [2024-11-18 23:43:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 23:43:51,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:51,641 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:51,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:43:51,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:51,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash 603998615, now seen corresponding path program 1 times [2024-11-18 23:43:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764668220] [2024-11-18 23:43:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:51,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-11-18 23:43:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764668220] [2024-11-18 23:43:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764668220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:52,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:52,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:43:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057638678] [2024-11-18 23:43:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:52,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:43:52,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:43:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:43:52,170 INFO L87 Difference]: Start difference. First operand 435 states and 694 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:52,588 INFO L93 Difference]: Finished difference Result 1515 states and 2404 transitions. [2024-11-18 23:43:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:43:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 411 [2024-11-18 23:43:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:52,603 INFO L225 Difference]: With dead ends: 1515 [2024-11-18 23:43:52,605 INFO L226 Difference]: Without dead ends: 1083 [2024-11-18 23:43:52,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:43:52,610 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 436 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:52,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1147 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:43:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-11-18 23:43:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1041. [2024-11-18 23:43:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 784 states have (on average 1.471938775510204) internal successors, (1154), 784 states have internal predecessors, (1154), 252 states have call successors, (252), 4 states have call predecessors, (252), 4 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 23:43:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1658 transitions. [2024-11-18 23:43:52,765 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1658 transitions. Word has length 411 [2024-11-18 23:43:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:52,768 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1658 transitions. [2024-11-18 23:43:52,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1658 transitions. [2024-11-18 23:43:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-18 23:43:52,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:52,778 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:52,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:43:52,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:52,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 963359302, now seen corresponding path program 1 times [2024-11-18 23:43:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:52,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887452751] [2024-11-18 23:43:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-11-18 23:43:53,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887452751] [2024-11-18 23:43:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887452751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:43:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070227137] [2024-11-18 23:43:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:53,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:43:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:43:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:43:53,193 INFO L87 Difference]: Start difference. First operand 1041 states and 1658 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:53,556 INFO L93 Difference]: Finished difference Result 2704 states and 4297 transitions. [2024-11-18 23:43:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:43:53,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 412 [2024-11-18 23:43:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:53,567 INFO L225 Difference]: With dead ends: 2704 [2024-11-18 23:43:53,568 INFO L226 Difference]: Without dead ends: 1666 [2024-11-18 23:43:53,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:43:53,575 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 273 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:53,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1008 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:43:53,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2024-11-18 23:43:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1636. [2024-11-18 23:43:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1315 states have (on average 1.500380228136882) internal successors, (1973), 1315 states have internal predecessors, (1973), 315 states have call successors, (315), 5 states have call predecessors, (315), 5 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2024-11-18 23:43:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2603 transitions. [2024-11-18 23:43:53,707 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2603 transitions. Word has length 412 [2024-11-18 23:43:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:53,711 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2603 transitions. [2024-11-18 23:43:53,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2603 transitions. [2024-11-18 23:43:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:43:53,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:53,719 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:53,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:43:53,720 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:53,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash -688301868, now seen corresponding path program 1 times [2024-11-18 23:43:53,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073142261] [2024-11-18 23:43:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-11-18 23:43:54,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:54,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073142261] [2024-11-18 23:43:54,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073142261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:54,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:54,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:43:54,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882225093] [2024-11-18 23:43:54,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:54,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:43:54,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:54,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:43:54,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:43:54,441 INFO L87 Difference]: Start difference. First operand 1636 states and 2603 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:54,803 INFO L93 Difference]: Finished difference Result 5495 states and 8735 transitions. [2024-11-18 23:43:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:43:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 413 [2024-11-18 23:43:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:54,824 INFO L225 Difference]: With dead ends: 5495 [2024-11-18 23:43:54,824 INFO L226 Difference]: Without dead ends: 3969 [2024-11-18 23:43:54,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:43:54,831 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 575 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:54,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1029 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:43:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2024-11-18 23:43:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3157. [2024-11-18 23:43:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 2580 states have (on average 1.506201550387597) internal successors, (3886), 2580 states have internal predecessors, (3886), 567 states have call successors, (567), 9 states have call predecessors, (567), 9 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2024-11-18 23:43:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 5020 transitions. [2024-11-18 23:43:55,092 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 5020 transitions. Word has length 413 [2024-11-18 23:43:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:55,093 INFO L471 AbstractCegarLoop]: Abstraction has 3157 states and 5020 transitions. [2024-11-18 23:43:55,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-11-18 23:43:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 5020 transitions. [2024-11-18 23:43:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:43:55,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:55,101 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:55,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:43:55,101 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:55,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash -647627118, now seen corresponding path program 1 times [2024-11-18 23:43:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6797615] [2024-11-18 23:43:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-18 23:43:56,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6797615] [2024-11-18 23:43:56,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6797615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229810779] [2024-11-18 23:43:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:56,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:56,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:56,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:43:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:57,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 23:43:57,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2024-11-18 23:43:58,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 198 proven. 171 refuted. 0 times theorem prover too weak. 7443 trivial. 0 not checked. [2024-11-18 23:43:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229810779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:43:58,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:43:58,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-18 23:43:58,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674691805] [2024-11-18 23:43:58,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:43:58,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:43:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:43:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:43:58,931 INFO L87 Difference]: Start difference. First operand 3157 states and 5020 transitions. Second operand has 15 states, 15 states have (on average 14.0) internal successors, (210), 15 states have internal predecessors, (210), 6 states have call successors, (151), 3 states have call predecessors, (151), 7 states have return successors, (153), 6 states have call predecessors, (153), 6 states have call successors, (153) [2024-11-18 23:44:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:00,043 INFO L93 Difference]: Finished difference Result 6363 states and 9982 transitions. [2024-11-18 23:44:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 23:44:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.0) internal successors, (210), 15 states have internal predecessors, (210), 6 states have call successors, (151), 3 states have call predecessors, (151), 7 states have return successors, (153), 6 states have call predecessors, (153), 6 states have call successors, (153) Word has length 413 [2024-11-18 23:44:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:00,068 INFO L225 Difference]: With dead ends: 6363 [2024-11-18 23:44:00,068 INFO L226 Difference]: Without dead ends: 3337 [2024-11-18 23:44:00,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=641, Unknown=0, NotChecked=0, Total=930 [2024-11-18 23:44:00,079 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 916 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:00,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 632 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:44:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2024-11-18 23:44:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 3265. [2024-11-18 23:44:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 2661 states have (on average 1.4772641863960918) internal successors, (3931), 2661 states have internal predecessors, (3931), 567 states have call successors, (567), 36 states have call predecessors, (567), 36 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2024-11-18 23:44:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5065 transitions. [2024-11-18 23:44:00,329 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5065 transitions. Word has length 413 [2024-11-18 23:44:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:00,331 INFO L471 AbstractCegarLoop]: Abstraction has 3265 states and 5065 transitions. [2024-11-18 23:44:00,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.0) internal successors, (210), 15 states have internal predecessors, (210), 6 states have call successors, (151), 3 states have call predecessors, (151), 7 states have return successors, (153), 6 states have call predecessors, (153), 6 states have call successors, (153) [2024-11-18 23:44:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5065 transitions. [2024-11-18 23:44:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-18 23:44:00,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:00,335 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:00,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:44:00,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 23:44:00,540 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:00,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash -564721582, now seen corresponding path program 1 times [2024-11-18 23:44:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:00,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644868237] [2024-11-18 23:44:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 7446 trivial. 0 not checked. [2024-11-18 23:44:02,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:02,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644868237] [2024-11-18 23:44:02,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644868237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771574941] [2024-11-18 23:44:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:02,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:02,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:02,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:44:02,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:44:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:02,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 23:44:02,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4782 proven. 216 refuted. 0 times theorem prover too weak. 2814 trivial. 0 not checked. [2024-11-18 23:44:03,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-18 23:44:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771574941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:03,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:03,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2024-11-18 23:44:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280985599] [2024-11-18 23:44:03,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:44:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:44:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:44:03,593 INFO L87 Difference]: Start difference. First operand 3265 states and 5065 transitions. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (149), 3 states have call predecessors, (149), 6 states have return successors, (150), 7 states have call predecessors, (150), 7 states have call successors, (150) [2024-11-18 23:44:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:04,572 INFO L93 Difference]: Finished difference Result 3347 states and 5136 transitions. [2024-11-18 23:44:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:44:04,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (149), 3 states have call predecessors, (149), 6 states have return successors, (150), 7 states have call predecessors, (150), 7 states have call successors, (150) Word has length 413 [2024-11-18 23:44:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:04,586 INFO L225 Difference]: With dead ends: 3347 [2024-11-18 23:44:04,586 INFO L226 Difference]: Without dead ends: 1783 [2024-11-18 23:44:04,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2024-11-18 23:44:04,592 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 608 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:04,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1010 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:44:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-18 23:44:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1743. [2024-11-18 23:44:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1397 states have (on average 1.439513242662849) internal successors, (2011), 1397 states have internal predecessors, (2011), 315 states have call successors, (315), 30 states have call predecessors, (315), 30 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2024-11-18 23:44:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2641 transitions. [2024-11-18 23:44:04,768 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2641 transitions. Word has length 413 [2024-11-18 23:44:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:04,769 INFO L471 AbstractCegarLoop]: Abstraction has 1743 states and 2641 transitions. [2024-11-18 23:44:04,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (149), 3 states have call predecessors, (149), 6 states have return successors, (150), 7 states have call predecessors, (150), 7 states have call successors, (150) [2024-11-18 23:44:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2641 transitions. [2024-11-18 23:44:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-18 23:44:04,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:04,774 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:04,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:44:04,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:04,979 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:04,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash -811127713, now seen corresponding path program 1 times [2024-11-18 23:44:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:04,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264577015] [2024-11-18 23:44:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:04,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 264 proven. 102 refuted. 0 times theorem prover too weak. 7446 trivial. 0 not checked. [2024-11-18 23:44:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264577015] [2024-11-18 23:44:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264577015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852424664] [2024-11-18 23:44:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:09,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:09,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:09,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:44:09,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:44:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:09,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 23:44:09,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4580 proven. 186 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-18 23:44:12,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:15,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852424664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:15,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:44:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16] total 19 [2024-11-18 23:44:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808664046] [2024-11-18 23:44:15,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:15,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 23:44:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 23:44:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:44:15,684 INFO L87 Difference]: Start difference. First operand 1743 states and 2641 transitions. Second operand has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 18 states have internal predecessors, (174), 6 states have call successors, (92), 5 states have call predecessors, (92), 7 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) [2024-11-18 23:44:21,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-18 23:44:26,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []