./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd1.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/bAnd1.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 ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:09:11,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:09:11,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:09:11,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:09:11,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:09:11,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:09:11,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:09:11,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:09:11,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:09:11,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:09:11,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:09:11,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:09:11,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:09:11,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:09:11,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:09:11,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:09:11,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:09:11,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:09:11,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:09:11,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:09:11,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:09:11,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:09:11,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:09:11,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:09:11,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:09:11,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:09:11,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:09:11,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:09:11,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:09:11,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:09:11,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:09:11,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:09:11,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:09:11,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:09:11,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:09:11,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:09:11,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:09:11,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:09:11,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:09:11,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:09:11,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:09:11,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:09:11,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 [2024-11-18 09:09:11,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:09:11,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:09:11,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:09:11,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:09:11,486 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:09:11,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd1.i [2024-11-18 09:09:12,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:09:13,120 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:09:13,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd1.i [2024-11-18 09:09:13,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d2939f3/db7941eeb6374a779290061adc734c99/FLAG11698bba1 [2024-11-18 09:09:13,530 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d2939f3/db7941eeb6374a779290061adc734c99 [2024-11-18 09:09:13,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:09:13,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:09:13,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:09:13,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:09:13,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:09:13,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63eb3a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13, skipping insertion in model container [2024-11-18 09:09:13,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:09:13,766 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/bAnd1.i[1290,1303] [2024-11-18 09:09:13,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:09:13,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:09:13,803 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/bAnd1.i[1290,1303] [2024-11-18 09:09:13,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:09:13,837 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:09:13,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13 WrapperNode [2024-11-18 09:09:13,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:09:13,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:09:13,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:09:13,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:09:13,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,877 INFO L138 Inliner]: procedures = 16, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-11-18 09:09:13,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:09:13,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:09:13,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:09:13,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:09:13,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,927 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 09:09:13,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:09:13,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:09:13,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:09:13,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:09:13,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (1/1) ... [2024-11-18 09:09:13,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:09:13,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:13,986 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 09:09:13,989 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 09:09:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:09:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:09:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:09:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:09:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:09:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:09:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:09:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:09:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2024-11-18 09:09:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2024-11-18 09:09:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:09:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:09:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:09:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:09:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:09:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:09:14,116 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:09:14,118 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:09:14,306 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 09:09:14,307 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:09:14,320 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:09:14,321 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:09:14,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:14 BoogieIcfgContainer [2024-11-18 09:09:14,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:09:14,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:09:14,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:09:14,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:09:14,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:13" (1/3) ... [2024-11-18 09:09:14,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9f60c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:14, skipping insertion in model container [2024-11-18 09:09:14,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:13" (2/3) ... [2024-11-18 09:09:14,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9f60c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:14, skipping insertion in model container [2024-11-18 09:09:14,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:14" (3/3) ... [2024-11-18 09:09:14,332 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd1.i [2024-11-18 09:09:14,347 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:09:14,348 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:09:14,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:09:14,422 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;@274107d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:09:14,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:09:14,429 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 09:09:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:09:14,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:14,437 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 09:09:14,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:14,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash 571232979, now seen corresponding path program 1 times [2024-11-18 09:09:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612513975] [2024-11-18 09:09:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:14,767 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 09:09:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612513975] [2024-11-18 09:09:14,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612513975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:09:14,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:09:14,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:09:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621651214] [2024-11-18 09:09:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:09:14,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:09:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:09:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:09:14,805 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 09:09:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:14,847 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-18 09:09:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:09:14,849 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 09:09:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:14,862 INFO L225 Difference]: With dead ends: 60 [2024-11-18 09:09:14,862 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:09:14,866 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 09:09:14,871 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 09:09:14,873 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 09:09:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:09:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-18 09:09:14,903 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 09:09:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-18 09:09:14,908 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-11-18 09:09:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:14,909 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-18 09:09:14,909 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 09:09:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-18 09:09:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:09:14,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:14,912 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 09:09:14,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:09:14,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:14,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 572560753, now seen corresponding path program 1 times [2024-11-18 09:09:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302875950] [2024-11-18 09:09:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:15,059 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 09:09:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302875950] [2024-11-18 09:09:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302875950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769765062] [2024-11-18 09:09:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:15,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:15,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:15,064 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 09:09:15,067 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 09:09:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:15,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:09:15,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:15,234 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 09:09:15,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:09:15,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769765062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:09:15,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:09:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:09:15,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974128880] [2024-11-18 09:09:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:09:15,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:09:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:09:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:09:15,242 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 09:09:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:15,268 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2024-11-18 09:09:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:09:15,269 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 09:09:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:15,270 INFO L225 Difference]: With dead ends: 55 [2024-11-18 09:09:15,270 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 09:09:15,271 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 09:09:15,273 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 09:09:15,274 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 09:09:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 09:09:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2024-11-18 09:09:15,281 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 09:09:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-18 09:09:15,283 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 31 [2024-11-18 09:09:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:15,283 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-18 09:09:15,283 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 09:09:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-18 09:09:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 09:09:15,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:15,285 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 09:09:15,298 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 09:09:15,485 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 09:09:15,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:15,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -205733940, now seen corresponding path program 1 times [2024-11-18 09:09:15,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:15,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862284968] [2024-11-18 09:09:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:15,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:15,622 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 09:09:15,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:15,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862284968] [2024-11-18 09:09:15,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862284968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:15,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053936793] [2024-11-18 09:09:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:15,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:15,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:15,628 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 09:09:15,630 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 09:09:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:15,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:09:15,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:15,761 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 09:09:15,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:09:15,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053936793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:09:15,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:09:15,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:09:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661341527] [2024-11-18 09:09:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:09:15,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:09:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:09:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:09:15,765 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 09:09:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:15,786 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-18 09:09:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:09:15,787 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 09:09:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:15,788 INFO L225 Difference]: With dead ends: 48 [2024-11-18 09:09:15,790 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 09:09:15,791 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 09:09:15,792 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 09:09:15,792 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 09:09:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 09:09:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-18 09:09:15,799 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 09:09:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-18 09:09:15,801 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 43 [2024-11-18 09:09:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:15,803 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-18 09:09:15,803 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 09:09:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-18 09:09:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 09:09:15,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:15,804 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 09:09:15,822 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 09:09:16,008 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 09:09:16,010 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:16,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash -346372054, now seen corresponding path program 1 times [2024-11-18 09:09:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221232043] [2024-11-18 09:09:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:16,135 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 09:09:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221232043] [2024-11-18 09:09:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221232043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478399038] [2024-11-18 09:09:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:09:16,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:16,141 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 09:09:16,142 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 09:09:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:16,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:09:16,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:16,290 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 09:09:16,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:16,345 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 09:09:16,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478399038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:16,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:16,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:09:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916821465] [2024-11-18 09:09:16,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:16,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:09:16,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:09:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:09:16,348 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 09:09:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:16,379 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-11-18 09:09:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:09:16,380 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 09:09:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:16,381 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:09:16,381 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 09:09:16,382 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 09:09:16,384 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 09:09:16,385 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 09:09:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 09:09:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-18 09:09:16,390 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 09:09:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-18 09:09:16,392 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45 [2024-11-18 09:09:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:16,392 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-18 09:09:16,393 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 09:09:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-18 09:09:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:09:16,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:16,396 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 09:09:16,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:09:16,596 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 09:09:16,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:16,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1162285692, now seen corresponding path program 2 times [2024-11-18 09:09:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:16,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17803494] [2024-11-18 09:09:16,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:16,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:16,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:16,727 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 09:09:16,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:16,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17803494] [2024-11-18 09:09:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17803494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905211152] [2024-11-18 09:09:16,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:16,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:16,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:16,732 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 09:09:16,735 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 09:09:16,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:16,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:16,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:09:16,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:16,895 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 09:09:16,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:16,999 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 09:09:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905211152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:17,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:09:17,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571629669] [2024-11-18 09:09:17,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:17,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:09:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:17,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:09:17,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:09:17,005 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 09:09:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:17,076 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2024-11-18 09:09:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:09:17,078 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 09:09:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:17,079 INFO L225 Difference]: With dead ends: 84 [2024-11-18 09:09:17,079 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 09:09:17,080 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 09:09:17,080 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 09:09:17,081 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 09:09:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 09:09:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2024-11-18 09:09:17,091 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 09:09:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-18 09:09:17,093 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2024-11-18 09:09:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:17,093 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-18 09:09:17,093 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 09:09:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-18 09:09:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:09:17,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:17,095 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 09:09:17,107 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 09:09:17,295 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 09:09:17,296 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:17,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1972636781, now seen corresponding path program 3 times [2024-11-18 09:09:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:17,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717158585] [2024-11-18 09:09:17,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:17,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:09:17,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:17,420 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 09:09:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717158585] [2024-11-18 09:09:17,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717158585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623385668] [2024-11-18 09:09:17,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:17,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:17,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:17,424 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 09:09:17,428 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 09:09:17,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:09:17,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:17,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:09:17,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:17,570 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 09:09:17,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:17,612 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 09:09:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623385668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:17,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:17,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:09:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724891350] [2024-11-18 09:09:17,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:17,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:09:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:09:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:09:17,621 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 09:09:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:17,655 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-18 09:09:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:09:17,656 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 09:09:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:17,657 INFO L225 Difference]: With dead ends: 83 [2024-11-18 09:09:17,657 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 09:09:17,658 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 09:09:17,658 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 09:09:17,659 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 09:09:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 09:09:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 09:09:17,670 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 09:09:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-18 09:09:17,672 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 75 [2024-11-18 09:09:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:17,673 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-18 09:09:17,675 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 09:09:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-18 09:09:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 09:09:17,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:17,676 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 09:09:17,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:09:17,877 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 09:09:17,877 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:17,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash -596768723, now seen corresponding path program 4 times [2024-11-18 09:09:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683653678] [2024-11-18 09:09:17,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:17,905 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:17,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:17,995 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 09:09:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:17,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683653678] [2024-11-18 09:09:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683653678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:17,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629213002] [2024-11-18 09:09:17,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:17,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:17,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:17,999 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 09:09:18,000 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 09:09:18,132 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:18,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:18,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:09:18,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:18,158 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 09:09:18,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:18,209 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 09:09:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629213002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:18,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:09:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515672914] [2024-11-18 09:09:18,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:18,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:09:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:09:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:09:18,215 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 09:09:18,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:18,242 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2024-11-18 09:09:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:09:18,243 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 09:09:18,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:18,244 INFO L225 Difference]: With dead ends: 119 [2024-11-18 09:09:18,244 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 09:09:18,244 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 09:09:18,245 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 09:09:18,245 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 09:09:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 09:09:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-18 09:09:18,251 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 09:09:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2024-11-18 09:09:18,252 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 81 [2024-11-18 09:09:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:18,253 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2024-11-18 09:09:18,253 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 09:09:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2024-11-18 09:09:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 09:09:18,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:18,254 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 09:09:18,271 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 09:09:18,458 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 09:09:18,459 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:18,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash 632882841, now seen corresponding path program 5 times [2024-11-18 09:09:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:18,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021812395] [2024-11-18 09:09:18,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:18,535 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:09:18,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:18,748 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 09:09:18,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021812395] [2024-11-18 09:09:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021812395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929123885] [2024-11-18 09:09:18,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:18,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:18,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:18,750 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 09:09:18,752 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 09:09:19,348 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:09:19,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:19,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:09:19,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:19,396 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 09:09:19,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:19,534 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 09:09:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929123885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:19,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 09:09:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451427389] [2024-11-18 09:09:19,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:19,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:09:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:09:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:09:19,537 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 09:09:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:19,591 INFO L93 Difference]: Finished difference Result 191 states and 248 transitions. [2024-11-18 09:09:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:09:19,592 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 09:09:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:19,593 INFO L225 Difference]: With dead ends: 191 [2024-11-18 09:09:19,593 INFO L226 Difference]: Without dead ends: 132 [2024-11-18 09:09:19,594 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 09:09:19,594 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 09:09:19,595 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 09:09:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-18 09:09:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-18 09:09:19,603 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 09:09:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2024-11-18 09:09:19,609 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 129 [2024-11-18 09:09:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:19,609 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2024-11-18 09:09:19,609 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 09:09:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2024-11-18 09:09:19,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 09:09:19,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:19,612 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 09:09:19,628 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 09:09:19,812 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 09:09:19,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:19,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash 933882737, now seen corresponding path program 6 times [2024-11-18 09:09:19,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:19,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574515487] [2024-11-18 09:09:19,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:09:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:19,902 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:09:19,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:20,016 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 09:09:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:20,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574515487] [2024-11-18 09:09:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574515487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:20,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633518938] [2024-11-18 09:09:20,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:09:20,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:20,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:20,019 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 09:09:20,021 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 09:09:20,235 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:09:20,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:20,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 09:09:20,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:20,294 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 09:09:20,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:20,412 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 09:09:20,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633518938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:20,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:20,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 09:09:20,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405571409] [2024-11-18 09:09:20,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:20,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:09:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:09:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:09:20,417 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 09:09:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:20,458 INFO L93 Difference]: Finished difference Result 239 states and 305 transitions. [2024-11-18 09:09:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:09:20,459 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 09:09:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:20,460 INFO L225 Difference]: With dead ends: 239 [2024-11-18 09:09:20,460 INFO L226 Difference]: Without dead ends: 144 [2024-11-18 09:09:20,461 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 09:09:20,462 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 09:09:20,462 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 09:09:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-18 09:09:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-18 09:09:20,470 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 09:09:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2024-11-18 09:09:20,474 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 225 [2024-11-18 09:09:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:20,475 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2024-11-18 09:09:20,475 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 09:09:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2024-11-18 09:09:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 09:09:20,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:20,479 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 09:09:20,496 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 09:09:20,683 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 09:09:20,683 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:20,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1267652059, now seen corresponding path program 7 times [2024-11-18 09:09:20,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:20,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96119898] [2024-11-18 09:09:20,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:09:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:21,169 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 09:09:21,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:21,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96119898] [2024-11-18 09:09:21,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96119898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:21,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472555755] [2024-11-18 09:09:21,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:09:21,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:21,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:21,172 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 09:09:21,173 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 09:09:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:09:21,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:09:21,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:21,421 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 09:09:21,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:21,680 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 09:09:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472555755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:21,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:21,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:09:21,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351539206] [2024-11-18 09:09:21,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:21,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:09:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:09:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:09:21,685 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 09:09:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:21,753 INFO L93 Difference]: Finished difference Result 289 states and 364 transitions. [2024-11-18 09:09:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:09:21,754 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 09:09:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:21,755 INFO L225 Difference]: With dead ends: 289 [2024-11-18 09:09:21,755 INFO L226 Difference]: Without dead ends: 168 [2024-11-18 09:09:21,756 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 09:09:21,757 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 09:09:21,757 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 09:09:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-18 09:09:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-18 09:09:21,775 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 09:09:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 200 transitions. [2024-11-18 09:09:21,777 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 200 transitions. Word has length 237 [2024-11-18 09:09:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:21,777 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 200 transitions. [2024-11-18 09:09:21,777 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 09:09:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 200 transitions. [2024-11-18 09:09:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-18 09:09:21,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:21,780 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 09:09:21,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:09:21,980 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 09:09:21,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:21,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1682766477, now seen corresponding path program 8 times [2024-11-18 09:09:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825108053] [2024-11-18 09:09:21,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:22,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:22,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:22,970 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 09:09:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825108053] [2024-11-18 09:09:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825108053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212245060] [2024-11-18 09:09:22,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:09:22,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:22,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:22,973 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 09:09:22,975 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 09:09:23,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:09:23,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:23,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 09:09:23,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:23,315 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 09:09:23,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:24,149 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 09:09:24,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212245060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:24,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:24,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 09:09:24,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930849679] [2024-11-18 09:09:24,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:24,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 09:09:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 09:09:24,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:09:24,154 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 09:09:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:24,302 INFO L93 Difference]: Finished difference Result 337 states and 424 transitions. [2024-11-18 09:09:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 09:09:24,303 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 09:09:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:24,304 INFO L225 Difference]: With dead ends: 337 [2024-11-18 09:09:24,304 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 09:09:24,306 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 09:09:24,307 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 09:09:24,307 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 09:09:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 09:09:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-18 09:09:24,317 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 09:09:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2024-11-18 09:09:24,318 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 261 [2024-11-18 09:09:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:24,318 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2024-11-18 09:09:24,319 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 09:09:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2024-11-18 09:09:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-18 09:09:24,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:24,322 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 09:09:24,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:09:24,526 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 09:09:24,527 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:24,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash -264604835, now seen corresponding path program 9 times [2024-11-18 09:09:24,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:24,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762167725] [2024-11-18 09:09:24,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:24,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:24,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:09:24,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:24,937 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 09:09:24,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:24,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762167725] [2024-11-18 09:09:24,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762167725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:24,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486032462] [2024-11-18 09:09:24,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:09:24,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:24,940 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 09:09:24,942 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 09:09:25,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:09:25,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:25,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:09:25,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:25,376 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 09:09:25,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:25,628 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 09:09:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486032462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:25,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:09:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35586216] [2024-11-18 09:09:25,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:25,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:09:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:09:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:09:25,633 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 09:09:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:25,715 INFO L93 Difference]: Finished difference Result 335 states and 407 transitions. [2024-11-18 09:09:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:09:25,716 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 09:09:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:25,718 INFO L225 Difference]: With dead ends: 335 [2024-11-18 09:09:25,718 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 09:09:25,719 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 09:09:25,719 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 09:09:25,719 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 09:09:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 09:09:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-18 09:09:25,738 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 09:09:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2024-11-18 09:09:25,742 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 309 [2024-11-18 09:09:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:25,743 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2024-11-18 09:09:25,743 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 09:09:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2024-11-18 09:09:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-18 09:09:25,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:25,747 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 09:09:25,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:09:25,948 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 09:09:25,948 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:25,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash 203325125, now seen corresponding path program 10 times [2024-11-18 09:09:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:25,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476707307] [2024-11-18 09:09:25,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:25,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:26,061 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:26,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:26,660 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 09:09:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476707307] [2024-11-18 09:09:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476707307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271519824] [2024-11-18 09:09:26,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:09:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:26,665 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 09:09:26,667 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 09:09:26,972 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:09:26,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:26,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 09:09:26,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:09:28,314 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 09:09:28,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:09:31,137 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 09:09:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271519824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:09:31,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:09:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 49, 49] total 111 [2024-11-18 09:09:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951234734] [2024-11-18 09:09:31,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:09:31,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-18 09:09:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:09:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-18 09:09:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4695, Invalid=7515, Unknown=0, NotChecked=0, Total=12210 [2024-11-18 09:09:31,146 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 09:09:31,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:09:31,527 INFO L93 Difference]: Finished difference Result 492 states and 611 transitions. [2024-11-18 09:09:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-18 09:09:31,528 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 09:09:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:09:31,530 INFO L225 Difference]: With dead ends: 492 [2024-11-18 09:09:31,530 INFO L226 Difference]: Without dead ends: 347 [2024-11-18 09:09:31,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4695, Invalid=7515, Unknown=0, NotChecked=0, Total=12210 [2024-11-18 09:09:31,536 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:09:31,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 312 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:09:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-18 09:09:31,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2024-11-18 09:09:31,546 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 09:09:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 376 transitions. [2024-11-18 09:09:31,548 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 376 transitions. Word has length 333 [2024-11-18 09:09:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:09:31,548 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 376 transitions. [2024-11-18 09:09:31,549 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 09:09:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 376 transitions. [2024-11-18 09:09:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 09:09:31,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:09:31,555 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 09:09:31,574 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 09:09:31,759 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 09:09:31,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:09:31,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:09:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1473900352, now seen corresponding path program 11 times [2024-11-18 09:09:31,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:09:31,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834919616] [2024-11-18 09:09:31,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:31,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:09:34,340 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2024-11-18 09:09:34,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:09:35,133 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 09:09:35,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:09:35,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834919616] [2024-11-18 09:09:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834919616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:09:35,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909925416] [2024-11-18 09:09:35,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:09:35,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:09:35,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:09:35,136 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 09:09:35,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process