./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:43:32,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:43:32,701 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:43:32,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:43:32,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:43:32,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:43:32,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:43:32,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:43:32,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:43:32,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:43:32,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:43:32,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:43:32,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:43:32,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:43:32,750 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:43:32,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:43:32,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:43:32,750 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:43:32,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:43:32,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:43:32,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:43:32,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:43:32,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:43:32,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:43:32,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:43:32,755 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:43:32,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:43:32,755 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:43:32,756 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:43:32,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:43:32,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:43:32,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:43:32,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:43:32,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:43:32,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:43:32,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:43:32,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:43:32,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:43:32,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:43:32,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:43:32,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:43:32,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:43:32,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 [2024-11-16 02:43:33,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:43:33,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:43:33,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:43:33,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:43:33,089 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:43:33,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2024-11-16 02:43:34,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:43:34,726 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:43:34,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2024-11-16 02:43:34,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f75ef92/74a0d2c656c24aa19b61bf4202e098cc/FLAG98ffb993a [2024-11-16 02:43:35,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f75ef92/74a0d2c656c24aa19b61bf4202e098cc [2024-11-16 02:43:35,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:43:35,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:43:35,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:43:35,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:43:35,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:43:35,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398f136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35, skipping insertion in model container [2024-11-16 02:43:35,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:43:35,313 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-multidimensional/init-non-constant-3-u.c[333,346] [2024-11-16 02:43:35,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:43:35,342 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:43:35,354 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-multidimensional/init-non-constant-3-u.c[333,346] [2024-11-16 02:43:35,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:43:35,384 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:43:35,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35 WrapperNode [2024-11-16 02:43:35,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:43:35,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:43:35,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:43:35,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:43:35,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,420 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-16 02:43:35,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:43:35,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:43:35,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:43:35,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:43:35,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,459 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-16 02:43:35,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,467 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:43:35,480 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:43:35,483 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:43:35,483 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:43:35,485 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (1/1) ... [2024-11-16 02:43:35,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:43:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:35,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:43:35,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:43:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:43:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:43:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:43:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:43:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:43:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:43:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:43:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:43:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:43:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:43:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:43:35,671 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:43:35,674 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:43:35,948 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset; [2024-11-16 02:43:35,962 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-16 02:43:35,962 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:43:35,977 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:43:35,977 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:43:35,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:43:35 BoogieIcfgContainer [2024-11-16 02:43:35,979 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:43:35,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:43:35,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:43:35,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:43:35,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:43:35" (1/3) ... [2024-11-16 02:43:35,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfb3c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:43:35, skipping insertion in model container [2024-11-16 02:43:35,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:43:35" (2/3) ... [2024-11-16 02:43:35,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfb3c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:43:35, skipping insertion in model container [2024-11-16 02:43:35,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:43:35" (3/3) ... [2024-11-16 02:43:35,989 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2024-11-16 02:43:36,008 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:43:36,009 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:43:36,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:43:36,072 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;@3b817a18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:43:36,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:43:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:43:36,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:36,088 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:36,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:36,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash -749960158, now seen corresponding path program 1 times [2024-11-16 02:43:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615351244] [2024-11-16 02:43:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:36,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:36,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:36,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615351244] [2024-11-16 02:43:36,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615351244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:43:36,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:43:36,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:43:36,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956311741] [2024-11-16 02:43:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:43:36,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:43:36,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:43:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:43:36,343 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2024-11-16 02:43:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:36,361 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2024-11-16 02:43:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:43:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 13 [2024-11-16 02:43:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:36,370 INFO L225 Difference]: With dead ends: 55 [2024-11-16 02:43:36,371 INFO L226 Difference]: Without dead ends: 24 [2024-11-16 02:43:36,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:43:36,378 INFO L432 NwaCegarLoop]: 33 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, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:36,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:43:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-16 02:43:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-16 02:43:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-16 02:43:36,412 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 13 [2024-11-16 02:43:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:36,412 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-16 02:43:36,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2024-11-16 02:43:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-16 02:43:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:43:36,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:36,415 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:36,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:43:36,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:36,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1634103285, now seen corresponding path program 1 times [2024-11-16 02:43:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330260117] [2024-11-16 02:43:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330260117] [2024-11-16 02:43:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330260117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:43:36,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:43:36,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:43:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052019871] [2024-11-16 02:43:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:43:36,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:43:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:43:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:43:36,609 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:36,667 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-11-16 02:43:36,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:43:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-11-16 02:43:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:36,669 INFO L225 Difference]: With dead ends: 46 [2024-11-16 02:43:36,669 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:43:36,669 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 [2024-11-16 02:43:36,671 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:36,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:43:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:43:36,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2024-11-16 02:43:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 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) [2024-11-16 02:43:36,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 02:43:36,678 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 14 [2024-11-16 02:43:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:36,679 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 02:43:36,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 02:43:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 02:43:36,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:36,680 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:36,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:43:36,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:36,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash -204950800, now seen corresponding path program 1 times [2024-11-16 02:43:36,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326194730] [2024-11-16 02:43:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326194730] [2024-11-16 02:43:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326194730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:43:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:43:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:43:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505587592] [2024-11-16 02:43:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:43:36,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:43:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:43:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:43:36,833 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2024-11-16 02:43:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:36,897 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-11-16 02:43:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:43:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2024-11-16 02:43:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:36,899 INFO L225 Difference]: With dead ends: 63 [2024-11-16 02:43:36,899 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 02:43:36,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:43:36,900 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:36,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 31 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:43:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 02:43:36,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2024-11-16 02:43:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-16 02:43:36,910 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2024-11-16 02:43:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:36,912 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-16 02:43:36,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2024-11-16 02:43:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-16 02:43:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:43:36,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:36,913 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:36,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:43:36,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:36,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1932707688, now seen corresponding path program 1 times [2024-11-16 02:43:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453916450] [2024-11-16 02:43:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:37,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:37,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453916450] [2024-11-16 02:43:37,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453916450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:43:37,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:43:37,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:43:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8283484] [2024-11-16 02:43:37,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:43:37,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:43:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:37,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:43:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:43:37,073 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:37,132 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-16 02:43:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:43:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2024-11-16 02:43:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:37,133 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:43:37,133 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 02:43:37,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:43:37,135 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:37,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:43:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 02:43:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2024-11-16 02:43:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-16 02:43:37,148 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 24 [2024-11-16 02:43:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:37,148 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-16 02:43:37,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-16 02:43:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:43:37,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:37,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:37,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:43:37,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:37,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1695554311, now seen corresponding path program 1 times [2024-11-16 02:43:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831695745] [2024-11-16 02:43:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:37,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:37,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831695745] [2024-11-16 02:43:37,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831695745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:43:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906043932] [2024-11-16 02:43:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:37,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:37,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:37,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:43:37,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:43:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:37,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:43:37,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:43:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:37,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:43:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:37,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906043932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:43:37,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:43:37,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 02:43:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846661440] [2024-11-16 02:43:37,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:43:37,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:43:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:43:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:43:37,583 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:37,713 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2024-11-16 02:43:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:43:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 26 [2024-11-16 02:43:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:37,714 INFO L225 Difference]: With dead ends: 91 [2024-11-16 02:43:37,714 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 02:43:37,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:43:37,716 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:37,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 81 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:43:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 02:43:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-16 02:43:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-16 02:43:37,727 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 26 [2024-11-16 02:43:37,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:37,728 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-16 02:43:37,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-16 02:43:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:43:37,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:37,729 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:37,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:43:37,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:37,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:37,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2097852572, now seen corresponding path program 2 times [2024-11-16 02:43:37,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560409393] [2024-11-16 02:43:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:43:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560409393] [2024-11-16 02:43:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560409393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:43:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003591579] [2024-11-16 02:43:38,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:43:38,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:38,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:38,136 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) [2024-11-16 02:43:38,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:43:38,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:43:38,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:43:38,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 02:43:38,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:43:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:38,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:43:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:43:38,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003591579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:43:38,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:43:38,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-11-16 02:43:38,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375131544] [2024-11-16 02:43:38,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:43:38,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 02:43:38,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 02:43:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:43:38,458 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:39,141 INFO L93 Difference]: Finished difference Result 359 states and 414 transitions. [2024-11-16 02:43:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-16 02:43:39,142 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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 32 [2024-11-16 02:43:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:39,144 INFO L225 Difference]: With dead ends: 359 [2024-11-16 02:43:39,144 INFO L226 Difference]: Without dead ends: 311 [2024-11-16 02:43:39,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 02:43:39,147 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 948 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:39,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 108 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:43:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-16 02:43:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 158. [2024-11-16 02:43:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1719745222929936) internal successors, (184), 157 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2024-11-16 02:43:39,184 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 32 [2024-11-16 02:43:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:39,184 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2024-11-16 02:43:39,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2024-11-16 02:43:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 02:43:39,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:39,187 INFO L215 NwaCegarLoop]: trace histogram [22, 20, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:39,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:43:39,388 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 [2024-11-16 02:43:39,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:39,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1502993072, now seen corresponding path program 3 times [2024-11-16 02:43:39,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:39,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142072914] [2024-11-16 02:43:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-11-16 02:43:39,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:39,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142072914] [2024-11-16 02:43:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142072914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:43:39,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598489700] [2024-11-16 02:43:39,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:43:39,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:39,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:39,589 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) [2024-11-16 02:43:39,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:43:39,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:43:39,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:43:39,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:43:39,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:43:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-11-16 02:43:39,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:43:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-11-16 02:43:40,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598489700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:43:40,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:43:40,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-16 02:43:40,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881663562] [2024-11-16 02:43:40,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:43:40,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:43:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:43:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:43:40,047 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:40,134 INFO L93 Difference]: Finished difference Result 422 states and 482 transitions. [2024-11-16 02:43:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:43:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 69 [2024-11-16 02:43:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:40,138 INFO L225 Difference]: With dead ends: 422 [2024-11-16 02:43:40,140 INFO L226 Difference]: Without dead ends: 323 [2024-11-16 02:43:40,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:43:40,143 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:40,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 65 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:43:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-16 02:43:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2024-11-16 02:43:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.1118012422360248) internal successors, (358), 322 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 358 transitions. [2024-11-16 02:43:40,198 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 358 transitions. Word has length 69 [2024-11-16 02:43:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:40,199 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 358 transitions. [2024-11-16 02:43:40,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 358 transitions. [2024-11-16 02:43:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 02:43:40,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:40,207 INFO L215 NwaCegarLoop]: trace histogram [88, 80, 12, 8, 8, 8, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:40,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:43:40,407 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 [2024-11-16 02:43:40,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:40,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash 73120971, now seen corresponding path program 4 times [2024-11-16 02:43:40,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048580325] [2024-11-16 02:43:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:40,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7842 backedges. 1724 proven. 110 refuted. 0 times theorem prover too weak. 6008 trivial. 0 not checked. [2024-11-16 02:43:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048580325] [2024-11-16 02:43:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048580325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:43:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278380900] [2024-11-16 02:43:41,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:43:41,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:41,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:41,259 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) [2024-11-16 02:43:41,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:43:41,471 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:43:41,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:43:41,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:43:41,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:43:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7842 backedges. 3068 proven. 269 refuted. 0 times theorem prover too weak. 4505 trivial. 0 not checked. [2024-11-16 02:43:41,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:43:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7842 backedges. 3068 proven. 269 refuted. 0 times theorem prover too weak. 4505 trivial. 0 not checked. [2024-11-16 02:43:42,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278380900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:43:42,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:43:42,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 42 [2024-11-16 02:43:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175855470] [2024-11-16 02:43:42,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:43:42,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 02:43:42,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:42,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 02:43:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1358, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 02:43:42,280 INFO L87 Difference]: Start difference. First operand 323 states and 358 transitions. Second operand has 42 states, 42 states have (on average 2.8333333333333335) internal successors, (119), 42 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:45,264 INFO L93 Difference]: Finished difference Result 1690 states and 1825 transitions. [2024-11-16 02:43:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-16 02:43:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.8333333333333335) internal successors, (119), 42 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2024-11-16 02:43:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:45,270 INFO L225 Difference]: With dead ends: 1690 [2024-11-16 02:43:45,270 INFO L226 Difference]: Without dead ends: 1395 [2024-11-16 02:43:45,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5560 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3896, Invalid=12874, Unknown=0, NotChecked=0, Total=16770 [2024-11-16 02:43:45,278 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 4582 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:45,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 691 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:43:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-16 02:43:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1132. [2024-11-16 02:43:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1131 states have (on average 1.1043324491600353) internal successors, (1249), 1131 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1249 transitions. [2024-11-16 02:43:45,364 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1249 transitions. Word has length 234 [2024-11-16 02:43:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:45,364 INFO L471 AbstractCegarLoop]: Abstraction has 1132 states and 1249 transitions. [2024-11-16 02:43:45,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.8333333333333335) internal successors, (119), 42 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:43:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1249 transitions. [2024-11-16 02:43:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2024-11-16 02:43:45,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:45,387 INFO L215 NwaCegarLoop]: trace histogram [336, 308, 32, 28, 28, 28, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:45,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:43:45,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:45,588 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:45,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1371036243, now seen corresponding path program 5 times [2024-11-16 02:43:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:45,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338152342] [2024-11-16 02:43:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 113956 backedges. 7846 proven. 132 refuted. 0 times theorem prover too weak. 105978 trivial. 0 not checked. [2024-11-16 02:43:48,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338152342] [2024-11-16 02:43:48,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338152342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:43:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123548710] [2024-11-16 02:43:48,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:43:48,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:48,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:48,094 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) [2024-11-16 02:43:48,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process