./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_seq_init_ground.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/array-examples/standard_seq_init_ground.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 eab386bb7401f51a7807d88da5762f33f54a558b2c1945526724b989e81d1d36 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:57:39,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:57:39,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:57:39,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:57:39,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:57:39,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:57:39,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:57:39,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:57:39,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:57:39,538 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:57:39,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:57:39,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:57:39,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:57:39,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:57:39,542 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:57:39,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:57:39,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:57:39,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:57:39,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:57:39,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:57:39,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:57:39,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:57:39,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:57:39,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:57:39,547 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:57:39,548 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:57:39,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:57:39,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:57:39,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:57:39,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:57:39,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:57:39,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:57:39,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:57:39,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:57:39,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:57:39,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:57:39,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:57:39,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:57:39,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:57:39,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:57:39,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:57:39,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:57:39,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eab386bb7401f51a7807d88da5762f33f54a558b2c1945526724b989e81d1d36 [2024-11-18 08:57:39,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:57:39,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:57:39,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:57:39,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:57:39,841 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:57:39,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_seq_init_ground.i [2024-11-18 08:57:41,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:57:41,367 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:57:41,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_seq_init_ground.i [2024-11-18 08:57:41,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccfd309b/9952adc2fc7d468a9aec778cad7a2514/FLAG012542506 [2024-11-18 08:57:41,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccfd309b/9952adc2fc7d468a9aec778cad7a2514 [2024-11-18 08:57:41,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:57:41,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:57:41,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:57:41,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:57:41,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:57:41,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fef5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41, skipping insertion in model container [2024-11-18 08:57:41,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,418 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:57:41,588 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/array-examples/standard_seq_init_ground.i[817,830] [2024-11-18 08:57:41,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:57:41,613 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:57:41,624 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/array-examples/standard_seq_init_ground.i[817,830] [2024-11-18 08:57:41,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:57:41,649 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:57:41,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41 WrapperNode [2024-11-18 08:57:41,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:57:41,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:57:41,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:57:41,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:57:41,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,683 INFO L138 Inliner]: procedures = 15, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2024-11-18 08:57:41,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:57:41,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:57:41,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:57:41,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:57:41,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,710 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-18 08:57:41,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:57:41,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:57:41,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:57:41,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:57:41,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (1/1) ... [2024-11-18 08:57:41,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:57:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:41,755 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 08:57:41,758 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 08:57:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:57:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:57:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:57:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:57:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:57:41,899 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:57:41,901 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:57:41,989 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-18 08:57:41,989 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:57:42,000 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:57:42,000 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 08:57:42,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:42 BoogieIcfgContainer [2024-11-18 08:57:42,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:57:42,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:57:42,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:57:42,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:57:42,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:57:41" (1/3) ... [2024-11-18 08:57:42,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d5bd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:42, skipping insertion in model container [2024-11-18 08:57:42,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:41" (2/3) ... [2024-11-18 08:57:42,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d5bd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:42, skipping insertion in model container [2024-11-18 08:57:42,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:42" (3/3) ... [2024-11-18 08:57:42,010 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_seq_init_ground.i [2024-11-18 08:57:42,029 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:57:42,030 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:57:42,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:57:42,080 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;@349b57f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:57:42,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:57:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2024-11-18 08:57:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 08:57:42,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:42,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:42,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:42,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:42,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1808850128, now seen corresponding path program 1 times [2024-11-18 08:57:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:42,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049368151] [2024-11-18 08:57:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:57:42,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:57:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049368151] [2024-11-18 08:57:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049368151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:57:42,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:57:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:57:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729116710] [2024-11-18 08:57:42,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:57:42,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:57:42,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:57:42,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:57:42,399 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-18 08:57:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:42,423 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2024-11-18 08:57:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:57:42,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-18 08:57:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:42,433 INFO L225 Difference]: With dead ends: 26 [2024-11-18 08:57:42,433 INFO L226 Difference]: Without dead ends: 11 [2024-11-18 08:57:42,435 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 08:57:42,441 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:57:42,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:57:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-18 08:57:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-18 08:57:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2024-11-18 08:57:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-18 08:57:42,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2024-11-18 08:57:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:42,470 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-18 08:57:42,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-18 08:57:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-18 08:57:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 08:57:42,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:42,471 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:42,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:57:42,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:42,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash 291255051, now seen corresponding path program 1 times [2024-11-18 08:57:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748876588] [2024-11-18 08:57:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:57:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:57:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748876588] [2024-11-18 08:57:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748876588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:42,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821553856] [2024-11-18 08:57:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:57:42,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:42,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:42,577 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 08:57:42,582 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 08:57:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:57:42,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:57:42,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:42,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:57:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:42,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821553856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:57:42,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:57:42,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:57:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007714660] [2024-11-18 08:57:42,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:57:42,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:57:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:57:42,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:57:42,724 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-11-18 08:57:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:42,739 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2024-11-18 08:57:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:57:42,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-18 08:57:42,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:42,740 INFO L225 Difference]: With dead ends: 21 [2024-11-18 08:57:42,740 INFO L226 Difference]: Without dead ends: 14 [2024-11-18 08:57:42,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:57:42,741 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:57:42,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:57:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-18 08:57:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-18 08:57:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2024-11-18 08:57:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-18 08:57:42,749 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2024-11-18 08:57:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:42,749 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-18 08:57:42,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-11-18 08:57:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-18 08:57:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 08:57:42,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:42,750 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:42,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 08:57:42,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:42,952 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:42,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash 521278352, now seen corresponding path program 2 times [2024-11-18 08:57:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:42,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793984879] [2024-11-18 08:57:42,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:57:42,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:42,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:57:42,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:43,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793984879] [2024-11-18 08:57:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793984879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353983119] [2024-11-18 08:57:43,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:57:43,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:43,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:43,146 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 08:57:43,158 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 08:57:43,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:57:43,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:43,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:57:43,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:43,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:57:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353983119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:57:43,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:57:43,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 08:57:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543682735] [2024-11-18 08:57:43,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:57:43,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 08:57:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 08:57:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:57:43,341 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2024-11-18 08:57:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:43,369 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2024-11-18 08:57:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 08:57:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 08:57:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:43,374 INFO L225 Difference]: With dead ends: 27 [2024-11-18 08:57:43,374 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 08:57:43,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:57:43,375 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:57:43,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:57:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 08:57:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-18 08:57:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2024-11-18 08:57:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-18 08:57:43,380 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2024-11-18 08:57:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:43,381 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-18 08:57:43,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2024-11-18 08:57:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-18 08:57:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 08:57:43,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:43,383 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:43,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 08:57:43,583 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,SelfDestructingSolverStorable2 [2024-11-18 08:57:43,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:43,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:43,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1061727824, now seen corresponding path program 3 times [2024-11-18 08:57:43,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:43,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900660019] [2024-11-18 08:57:43,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:57:43,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:43,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 08:57:43,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:43,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900660019] [2024-11-18 08:57:43,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900660019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414617968] [2024-11-18 08:57:43,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:57:43,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:43,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:43,873 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 08:57:43,875 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 08:57:43,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 08:57:43,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:43,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:57:43,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:44,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:57:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:44,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414617968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:57:44,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:57:44,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:57:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373973094] [2024-11-18 08:57:44,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:57:44,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:57:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:57:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:57:44,293 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2024-11-18 08:57:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:44,339 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2024-11-18 08:57:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:57:44,339 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-18 08:57:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:44,340 INFO L225 Difference]: With dead ends: 39 [2024-11-18 08:57:44,340 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 08:57:44,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:57:44,341 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 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 [2024-11-18 08:57:44,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:57:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 08:57:44,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-18 08:57:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:57:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-18 08:57:44,354 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 17 [2024-11-18 08:57:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:44,354 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-18 08:57:44,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2024-11-18 08:57:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-18 08:57:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 08:57:44,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:44,355 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:44,374 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 08:57:44,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:44,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:44,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:44,557 INFO L85 PathProgramCache]: Analyzing trace with hash 265717232, now seen corresponding path program 4 times [2024-11-18 08:57:44,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:44,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678404655] [2024-11-18 08:57:44,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:57:44,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:44,620 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:57:44,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:45,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678404655] [2024-11-18 08:57:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678404655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888279586] [2024-11-18 08:57:45,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:57:45,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:45,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:45,251 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 08:57:45,252 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 08:57:45,339 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:57:45,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:45,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:57:45,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:45,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:57:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888279586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:57:46,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:57:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:57:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964580334] [2024-11-18 08:57:46,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:57:46,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:57:46,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:46,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:57:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:57:46,243 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2024-11-18 08:57:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:46,300 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2024-11-18 08:57:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:57:46,300 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-18 08:57:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:46,301 INFO L225 Difference]: With dead ends: 63 [2024-11-18 08:57:46,301 INFO L226 Difference]: Without dead ends: 56 [2024-11-18 08:57:46,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:57:46,304 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:57:46,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:57:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-18 08:57:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-18 08:57:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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) [2024-11-18 08:57:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-11-18 08:57:46,316 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 29 [2024-11-18 08:57:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:46,316 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-11-18 08:57:46,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2024-11-18 08:57:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-11-18 08:57:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 08:57:46,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:46,319 INFO L215 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:46,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 08:57:46,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:46,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:46,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1684000368, now seen corresponding path program 5 times [2024-11-18 08:57:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266310333] [2024-11-18 08:57:46,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:57:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:46,715 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-18 08:57:46,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:57:48,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266310333] [2024-11-18 08:57:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266310333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721170186] [2024-11-18 08:57:48,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:57:48,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:48,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:57:48,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:58:01,643 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-18 08:58:01,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:58:01,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 08:58:01,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:58:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:58:01,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:58:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:58:04,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721170186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:58:04,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:58:04,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-18 08:58:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116038924] [2024-11-18 08:58:04,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:58:04,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-18 08:58:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:58:04,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-18 08:58:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 08:58:04,338 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:58:04,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:58:04,475 INFO L93 Difference]: Finished difference Result 111 states and 160 transitions. [2024-11-18 08:58:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 08:58:04,478 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-18 08:58:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:58:04,479 INFO L225 Difference]: With dead ends: 111 [2024-11-18 08:58:04,479 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 08:58:04,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 08:58:04,483 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:58:04,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:58:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 08:58:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-18 08:58:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 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) [2024-11-18 08:58:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-11-18 08:58:04,503 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 53 [2024-11-18 08:58:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:58:04,503 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-11-18 08:58:04,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:58:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-11-18 08:58:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 08:58:04,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:58:04,506 INFO L215 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:58:04,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 08:58:04,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:58:04,707 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:58:04,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:58:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash -765599888, now seen corresponding path program 6 times [2024-11-18 08:58:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:58:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928161672] [2024-11-18 08:58:04,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 08:58:04,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:58:05,455 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-18 08:58:05,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:58:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:58:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:58:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928161672] [2024-11-18 08:58:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928161672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:58:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179196462] [2024-11-18 08:58:10,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 08:58:10,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:58:10,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:58:10,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:58:10,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process