./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd3.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-crafted/bAnd3.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 afae6e1207f0c06d84ec8e2e2acf76c1c8773d377a1c0ea49ca1b653981c2bfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:09:18,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:09:18,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:09:18,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:09:18,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:09:18,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:09:18,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:09:18,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:09:18,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:09:18,200 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:09:18,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:09:18,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:09:18,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:09:18,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:09:18,206 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:09:18,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:09:18,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:09:18,207 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:09:18,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:09:18,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:09:18,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:09:18,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:09:18,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:09:18,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:09:18,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:09:18,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:09:18,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:09:18,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:09:18,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:09:18,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:09:18,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:09:18,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:09:18,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:09:18,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:09:18,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:09:18,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:09:18,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:09:18,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:09:18,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:09:18,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:09:18,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:09:18,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:09:18,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afae6e1207f0c06d84ec8e2e2acf76c1c8773d377a1c0ea49ca1b653981c2bfd [2024-11-18 09:09:18,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:09:18,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:09:18,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:09:18,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:09:18,532 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:09:18,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd3.i [2024-11-18 09:09:20,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:09:20,224 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:09:20,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i [2024-11-18 09:09:20,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b4160b2/3c2ce91714724882be10719ab534c358/FLAG00cd386fd [2024-11-18 09:09:20,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b4160b2/3c2ce91714724882be10719ab534c358 [2024-11-18 09:09:20,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:09:20,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:09:20,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:09:20,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:09:20,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:09:20,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e5bb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20, skipping insertion in model container [2024-11-18 09:09:20,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:09:20,465 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-crafted/bAnd3.i[1302,1315] [2024-11-18 09:09:20,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:09:20,480 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:09:20,501 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-crafted/bAnd3.i[1302,1315] [2024-11-18 09:09:20,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:09:20,519 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:09:20,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20 WrapperNode [2024-11-18 09:09:20,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:09:20,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:09:20,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:09:20,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:09:20,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,556 INFO L138 Inliner]: procedures = 16, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-11-18 09:09:20,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:09:20,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:09:20,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:09:20,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:09:20,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,588 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 8, 11]. 52 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-18 09:09:20,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:09:20,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:09:20,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:09:20,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:09:20,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (1/1) ... [2024-11-18 09:09:20,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:09:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:20,640 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 09:09:20,643 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 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:09:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:09:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:09:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2024-11-18 09:09:20,682 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2024-11-18 09:09:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:09:20,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:09:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:09:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:09:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:09:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:09:20,761 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:09:20,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:09:20,914 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 09:09:20,915 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:09:20,927 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:09:20,927 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:09:20,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:20 BoogieIcfgContainer [2024-11-18 09:09:20,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:09:20,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:09:20,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:09:20,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:09:20,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:20" (1/3) ... [2024-11-18 09:09:20,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512bafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:20, skipping insertion in model container [2024-11-18 09:09:20,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20" (2/3) ... [2024-11-18 09:09:20,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512bafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:20, skipping insertion in model container [2024-11-18 09:09:20,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:20" (3/3) ... [2024-11-18 09:09:20,937 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2024-11-18 09:09:20,954 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:09:20,955 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:09:21,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:09:21,012 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;@5c4b4b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:09:21,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:09:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:21,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:09:21,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:21,024 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:21,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:21,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 571232979, now seen corresponding path program 1 times [2024-11-18 09:09:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:21,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574578799] [2024-11-18 09:09:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:09:21,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574578799] [2024-11-18 09:09:21,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574578799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:09:21,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:09:21,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:09:21,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717964605] [2024-11-18 09:09:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:09:21,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:09:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:09:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:09:21,370 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:09:21,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:21,407 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-18 09:09:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:09:21,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:09:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:21,417 INFO L225 Difference]: With dead ends: 60 [2024-11-18 09:09:21,417 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:09:21,420 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 09:09:21,424 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:21,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:09:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-18 09:09:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-18 09:09:21,459 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-11-18 09:09:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:21,459 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-18 09:09:21,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:09:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-18 09:09:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:09:21,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:21,462 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:21,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:09:21,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:21,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash 572560753, now seen corresponding path program 1 times [2024-11-18 09:09:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:21,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316850803] [2024-11-18 09:09:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:09:21,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:21,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316850803] [2024-11-18 09:09:21,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316850803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:21,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728064962] [2024-11-18 09:09:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:21,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:21,649 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 09:09:21,652 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 09:09:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:21,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:09:21,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:09:21,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:09:21,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728064962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:09:21,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:09:21,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:09:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015766328] [2024-11-18 09:09:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:09:21,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:09:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:21,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:09:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:09:21,806 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:09:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:21,824 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2024-11-18 09:09:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:09:21,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-18 09:09:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:21,826 INFO L225 Difference]: With dead ends: 55 [2024-11-18 09:09:21,826 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 09:09:21,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:09:21,828 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:21,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 09:09:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2024-11-18 09:09:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-18 09:09:21,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 31 [2024-11-18 09:09:21,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:21,852 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-18 09:09:21,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:09:21,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-18 09:09:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 09:09:21,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:21,857 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:21,875 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 09:09:22,057 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 09:09:22,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:22,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash -205733940, now seen corresponding path program 1 times [2024-11-18 09:09:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332724357] [2024-11-18 09:09:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 09:09:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332724357] [2024-11-18 09:09:22,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332724357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:22,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342899318] [2024-11-18 09:09:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:22,217 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 09:09:22,219 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 09:09:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:22,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:09:22,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:09:22,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:09:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342899318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:09:22,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:09:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:09:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742983591] [2024-11-18 09:09:22,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:09:22,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:09:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:09:22,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:09:22,339 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:09:22,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:22,361 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-18 09:09:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:09:22,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-18 09:09:22,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:22,363 INFO L225 Difference]: With dead ends: 48 [2024-11-18 09:09:22,363 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 09:09:22,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:09:22,365 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:22,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 09:09:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-18 09:09:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-18 09:09:22,375 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 43 [2024-11-18 09:09:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:22,377 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-18 09:09:22,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:09:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-18 09:09:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 09:09:22,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:22,379 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:22,396 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 09:09:22,583 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 09:09:22,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:22,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash -346372054, now seen corresponding path program 1 times [2024-11-18 09:09:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054105334] [2024-11-18 09:09:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:09:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054105334] [2024-11-18 09:09:22,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054105334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240659516] [2024-11-18 09:09:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:22,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:22,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:22,673 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 09:09:22,674 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 09:09:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:22,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:09:22,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:09:22,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:09:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240659516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:22,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:22,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:09:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383902441] [2024-11-18 09:09:22,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:22,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:09:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:09:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:09:22,867 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:09:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:22,897 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-11-18 09:09:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:09:22,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-18 09:09:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:22,899 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:09:22,899 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 09:09:22,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 09:09:22,901 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:22,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 09:09:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-18 09:09:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-18 09:09:22,906 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45 [2024-11-18 09:09:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:22,907 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-18 09:09:22,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:09:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-18 09:09:22,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:09:22,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:22,908 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:22,921 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 09:09:23,109 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 09:09:23,109 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:23,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1162285692, now seen corresponding path program 2 times [2024-11-18 09:09:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:23,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118088492] [2024-11-18 09:09:23,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:23,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:23,144 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:23,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:09:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118088492] [2024-11-18 09:09:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118088492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275572443] [2024-11-18 09:09:23,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:23,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:23,239 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 09:09:23,243 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 09:09:23,334 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:23,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:23,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:09:23,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:09:23,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:09:23,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275572443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:23,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:23,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:09:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578457804] [2024-11-18 09:09:23,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:23,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:09:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:23,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:09:23,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:09:23,519 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:09:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:23,599 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2024-11-18 09:09:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:09:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2024-11-18 09:09:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:23,603 INFO L225 Difference]: With dead ends: 84 [2024-11-18 09:09:23,603 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 09:09:23,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:09:23,604 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:23,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 192 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:09:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 09:09:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2024-11-18 09:09:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-18 09:09:23,612 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2024-11-18 09:09:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:23,612 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-18 09:09:23,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:09:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-18 09:09:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:09:23,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:23,614 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:23,627 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 09:09:23,816 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 09:09:23,816 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:23,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1972636781, now seen corresponding path program 3 times [2024-11-18 09:09:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:23,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559624697] [2024-11-18 09:09:23,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:23,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:23,859 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:09:23,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 09:09:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:23,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559624697] [2024-11-18 09:09:23,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559624697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:23,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999899574] [2024-11-18 09:09:23,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:23,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:23,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:23,918 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 09:09:23,919 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 09:09:24,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:09:24,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:24,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:09:24,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-18 09:09:24,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 09:09:24,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999899574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:24,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:24,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:09:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332928203] [2024-11-18 09:09:24,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:24,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:09:24,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:24,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:09:24,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:09:24,055 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:09:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:24,077 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-18 09:09:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:09:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2024-11-18 09:09:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:24,079 INFO L225 Difference]: With dead ends: 83 [2024-11-18 09:09:24,079 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 09:09:24,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 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 09:09:24,080 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:24,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 85 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:24,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 09:09:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 09:09:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-18 09:09:24,087 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 75 [2024-11-18 09:09:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:24,087 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-18 09:09:24,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:09:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-18 09:09:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 09:09:24,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:24,089 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:24,105 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 09:09:24,289 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 09:09:24,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:24,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash -596768723, now seen corresponding path program 4 times [2024-11-18 09:09:24,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:24,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007691003] [2024-11-18 09:09:24,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:24,325 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:24,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:09:24,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007691003] [2024-11-18 09:09:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007691003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898537444] [2024-11-18 09:09:24,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:24,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:24,429 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 09:09:24,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:09:24,564 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:24,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:24,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:09:24,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:09:24,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:09:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898537444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:24,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:24,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:09:24,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662429119] [2024-11-18 09:09:24,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:24,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:09:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:09:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:09:24,651 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:09:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:24,682 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2024-11-18 09:09:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:09:24,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2024-11-18 09:09:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:24,684 INFO L225 Difference]: With dead ends: 119 [2024-11-18 09:09:24,684 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 09:09:24,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:09:24,685 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:24,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 130 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 09:09:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-18 09:09:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2024-11-18 09:09:24,701 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 81 [2024-11-18 09:09:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:24,701 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2024-11-18 09:09:24,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:09:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2024-11-18 09:09:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 09:09:24,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:24,706 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:24,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:09:24,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:24,907 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:24,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 632882841, now seen corresponding path program 5 times [2024-11-18 09:09:24,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:24,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308911886] [2024-11-18 09:09:24,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:24,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:24,995 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:09:24,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 160 proven. 226 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-18 09:09:25,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308911886] [2024-11-18 09:09:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308911886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342400243] [2024-11-18 09:09:25,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:25,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:25,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:25,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:25,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:09:25,805 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:09:25,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:25,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:09:25,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-18 09:09:25,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-18 09:09:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342400243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:26,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:26,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 09:09:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161562610] [2024-11-18 09:09:26,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:26,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:09:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:09:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:09:26,008 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:09:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:26,071 INFO L93 Difference]: Finished difference Result 191 states and 248 transitions. [2024-11-18 09:09:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:09:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-18 09:09:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:26,075 INFO L225 Difference]: With dead ends: 191 [2024-11-18 09:09:26,076 INFO L226 Difference]: Without dead ends: 132 [2024-11-18 09:09:26,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:09:26,080 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 130 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:26,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 178 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-18 09:09:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-18 09:09:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 127 states have internal predecessors, (158), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2024-11-18 09:09:26,099 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 129 [2024-11-18 09:09:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:26,100 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2024-11-18 09:09:26,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:09:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2024-11-18 09:09:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 09:09:26,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:26,105 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:26,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:09:26,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:26,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:26,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash 933882737, now seen corresponding path program 6 times [2024-11-18 09:09:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877131752] [2024-11-18 09:09:26,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:09:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:26,405 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:09:26,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:26,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877131752] [2024-11-18 09:09:26,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877131752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976390526] [2024-11-18 09:09:26,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:09:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:26,526 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:09:26,691 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:09:26,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:26,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:09:26,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 1634 proven. 16 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2024-11-18 09:09:26,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976390526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:26,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 09:09:26,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700926872] [2024-11-18 09:09:26,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:26,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:09:26,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:09:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:09:26,820 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:09:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:26,860 INFO L93 Difference]: Finished difference Result 239 states and 305 transitions. [2024-11-18 09:09:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:09:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 225 [2024-11-18 09:09:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:26,863 INFO L225 Difference]: With dead ends: 239 [2024-11-18 09:09:26,866 INFO L226 Difference]: Without dead ends: 144 [2024-11-18 09:09:26,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 444 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 09:09:26,867 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:26,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 112 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:09:26,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-18 09:09:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-18 09:09:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.223021582733813) internal successors, (170), 139 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2024-11-18 09:09:26,878 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 225 [2024-11-18 09:09:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:26,878 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2024-11-18 09:09:26,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:09:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2024-11-18 09:09:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 09:09:26,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:26,882 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:26,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:09:27,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 09:09:27,083 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:27,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1267652059, now seen corresponding path program 7 times [2024-11-18 09:09:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278406862] [2024-11-18 09:09:27,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:09:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:27,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278406862] [2024-11-18 09:09:27,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278406862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:27,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880525303] [2024-11-18 09:09:27,517 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:09:27,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:27,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:27,519 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:27,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:09:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:27,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:09:27,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:27,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:28,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880525303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:28,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:28,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:09:28,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97458725] [2024-11-18 09:09:28,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:28,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:09:28,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:09:28,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:09:28,014 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:09:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:28,086 INFO L93 Difference]: Finished difference Result 289 states and 364 transitions. [2024-11-18 09:09:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:09:28,086 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 237 [2024-11-18 09:09:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:28,087 INFO L225 Difference]: With dead ends: 289 [2024-11-18 09:09:28,087 INFO L226 Difference]: Without dead ends: 168 [2024-11-18 09:09:28,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 462 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 09:09:28,090 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:28,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:09:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-18 09:09:28,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-18 09:09:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.1901840490797546) internal successors, (194), 163 states have internal predecessors, (194), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:28,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 200 transitions. [2024-11-18 09:09:28,121 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 200 transitions. Word has length 237 [2024-11-18 09:09:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:28,121 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 200 transitions. [2024-11-18 09:09:28,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:09:28,121 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 200 transitions. [2024-11-18 09:09:28,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-18 09:09:28,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:28,124 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 22, 22, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:28,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 09:09:28,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 09:09:28,325 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:28,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1682766477, now seen corresponding path program 8 times [2024-11-18 09:09:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680426009] [2024-11-18 09:09:28,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:28,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:28,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:29,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:29,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680426009] [2024-11-18 09:09:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680426009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500615031] [2024-11-18 09:09:29,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:29,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:29,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:29,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:29,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:09:29,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:29,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:29,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 09:09:29,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:29,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:09:30,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500615031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:30,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 09:09:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259791983] [2024-11-18 09:09:30,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:30,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 09:09:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:30,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 09:09:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:09:30,423 INFO L87 Difference]: Start difference. First operand 168 states and 200 transitions. Second operand has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:09:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:30,546 INFO L93 Difference]: Finished difference Result 337 states and 424 transitions. [2024-11-18 09:09:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 09:09:30,546 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 261 [2024-11-18 09:09:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:30,548 INFO L225 Difference]: With dead ends: 337 [2024-11-18 09:09:30,548 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 09:09:30,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:09:30,550 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:30,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:09:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 09:09:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-18 09:09:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.146919431279621) internal successors, (242), 211 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2024-11-18 09:09:30,561 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 261 [2024-11-18 09:09:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:30,562 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2024-11-18 09:09:30,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:09:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2024-11-18 09:09:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-18 09:09:30,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:30,565 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 42, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:30,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:09:30,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 09:09:30,770 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:30,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -264604835, now seen corresponding path program 9 times [2024-11-18 09:09:30,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726926048] [2024-11-18 09:09:30,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:30,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:09:30,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2024-11-18 09:09:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726926048] [2024-11-18 09:09:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726926048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223055223] [2024-11-18 09:09:31,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:31,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:31,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:31,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:09:31,609 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:09:31,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:31,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:09:31,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 1634 proven. 100 refuted. 0 times theorem prover too weak. 4067 trivial. 0 not checked. [2024-11-18 09:09:31,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2024-11-18 09:09:31,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223055223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:31,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:31,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:09:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868186588] [2024-11-18 09:09:31,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:31,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:09:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:09:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:09:31,895 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:09:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:31,962 INFO L93 Difference]: Finished difference Result 335 states and 407 transitions. [2024-11-18 09:09:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:09:31,963 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 309 [2024-11-18 09:09:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:31,965 INFO L225 Difference]: With dead ends: 335 [2024-11-18 09:09:31,966 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 09:09:31,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:09:31,967 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:31,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 139 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:09:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 09:09:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-18 09:09:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.1319148936170214) internal successors, (266), 235 states have internal predecessors, (266), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2024-11-18 09:09:31,976 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 309 [2024-11-18 09:09:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:31,977 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2024-11-18 09:09:31,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:09:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2024-11-18 09:09:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-18 09:09:31,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:31,982 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 42, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:32,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 09:09:32,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 09:09:32,186 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:32,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash 203325125, now seen corresponding path program 10 times [2024-11-18 09:09:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735621036] [2024-11-18 09:09:32,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:32,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:32,272 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:32,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 1632 proven. 378 refuted. 0 times theorem prover too weak. 4175 trivial. 0 not checked. [2024-11-18 09:09:32,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735621036] [2024-11-18 09:09:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735621036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408812497] [2024-11-18 09:09:32,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:32,873 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:32,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:09:33,195 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:33,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:33,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 09:09:33,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4069 trivial. 0 not checked. [2024-11-18 09:09:34,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4069 trivial. 0 not checked. [2024-11-18 09:09:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408812497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:37,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:37,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 49, 49] total 111 [2024-11-18 09:09:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891649839] [2024-11-18 09:09:37,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:37,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-18 09:09:37,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-18 09:09:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4695, Invalid=7515, Unknown=0, NotChecked=0, Total=12210 [2024-11-18 09:09:37,156 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:09:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:37,455 INFO L93 Difference]: Finished difference Result 492 states and 611 transitions. [2024-11-18 09:09:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-18 09:09:37,456 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 333 [2024-11-18 09:09:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:37,458 INFO L225 Difference]: With dead ends: 492 [2024-11-18 09:09:37,458 INFO L226 Difference]: Without dead ends: 347 [2024-11-18 09:09:37,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4695, Invalid=7515, Unknown=0, NotChecked=0, Total=12210 [2024-11-18 09:09:37,462 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 141 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:37,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 312 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:09:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-18 09:09:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2024-11-18 09:09:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 337 states have (on average 1.0979228486646884) internal successors, (370), 337 states have internal predecessors, (370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:09:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 376 transitions. [2024-11-18 09:09:37,472 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 376 transitions. Word has length 333 [2024-11-18 09:09:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:37,473 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 376 transitions. [2024-11-18 09:09:37,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:09:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 376 transitions. [2024-11-18 09:09:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 09:09:37,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:37,476 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 45, 45, 45, 45, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:09:37,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:09:37,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 09:09:37,681 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:37,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1473900352, now seen corresponding path program 11 times [2024-11-18 09:09:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969381650] [2024-11-18 09:09:37,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:40,052 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2024-11-18 09:09:40,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13430 backedges. 934 proven. 1369 refuted. 0 times theorem prover too weak. 11127 trivial. 0 not checked. [2024-11-18 09:09:40,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:40,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969381650] [2024-11-18 09:09:40,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969381650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:40,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315381863] [2024-11-18 09:09:40,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:40,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:40,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:40,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:09:40,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process