./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 5b1ea2b89c0210def4460c68ce885cb310645908c528d57c04841cf488f85c6b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:46:22,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:46:22,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:46:22,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:46:22,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:46:22,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:46:22,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:46:22,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:46:22,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:46:22,286 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:46:22,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:46:22,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:46:22,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:46:22,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:46:22,290 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:46:22,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:46:22,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:46:22,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:46:22,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:46:22,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:46:22,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:46:22,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:46:22,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:46:22,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:46:22,295 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:46:22,295 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:46:22,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:46:22,296 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:46:22,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:46:22,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:46:22,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:46:22,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:46:22,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:46:22,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:46:22,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:46:22,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:46:22,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:46:22,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:46:22,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:46:22,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:46:22,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:46:22,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:46:22,300 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b1ea2b89c0210def4460c68ce885cb310645908c528d57c04841cf488f85c6b [2024-10-10 21:46:22,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:46:22,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:46:22,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:46:22,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:46:22,598 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:46:22,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i [2024-10-10 21:46:24,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:46:24,284 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:46:24,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i [2024-10-10 21:46:24,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5df4115bd/152ac59da5db4a6c91559bb21d0eaf29/FLAGc9064c33d [2024-10-10 21:46:24,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5df4115bd/152ac59da5db4a6c91559bb21d0eaf29 [2024-10-10 21:46:24,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:46:24,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:46:24,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:46:24,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:46:24,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:46:24,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c04a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24, skipping insertion in model container [2024-10-10 21:46:24,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,360 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:46:24,536 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i[816,829] [2024-10-10 21:46:24,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:46:24,562 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:46:24,575 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i[816,829] [2024-10-10 21:46:24,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:46:24,596 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:46:24,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24 WrapperNode [2024-10-10 21:46:24,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:46:24,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:46:24,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:46:24,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:46:24,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,631 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-10-10 21:46:24,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:46:24,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:46:24,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:46:24,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:46:24,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,655 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-10-10 21:46:24,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:46:24,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:46:24,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:46:24,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:46:24,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (1/1) ... [2024-10-10 21:46:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:46:24,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:24,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:46:24,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:46:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:46:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 21:46:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:46:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:46:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:46:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:46:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 21:46:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:46:24,823 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:46:24,825 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:46:24,958 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-10 21:46:24,958 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:46:24,999 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:46:24,999 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 21:46:25,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:46:24 BoogieIcfgContainer [2024-10-10 21:46:25,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:46:25,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:46:25,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:46:25,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:46:25,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:46:24" (1/3) ... [2024-10-10 21:46:25,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb28d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:46:25, skipping insertion in model container [2024-10-10 21:46:25,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:46:24" (2/3) ... [2024-10-10 21:46:25,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb28d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:46:25, skipping insertion in model container [2024-10-10 21:46:25,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:46:24" (3/3) ... [2024-10-10 21:46:25,015 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-1.i [2024-10-10 21:46:25,032 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:46:25,032 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:46:25,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:46:25,099 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;@5e566cef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:46:25,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:46:25,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-10 21:46:25,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:25,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:25,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:25,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2137985797, now seen corresponding path program 1 times [2024-10-10 21:46:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:25,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836638059] [2024-10-10 21:46:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:25,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:46:25,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836638059] [2024-10-10 21:46:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836638059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:46:25,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:46:25,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:46:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754223669] [2024-10-10 21:46:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:46:25,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:46:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:46:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:46:25,367 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:25,408 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2024-10-10 21:46:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:46:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-10 21:46:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:25,417 INFO L225 Difference]: With dead ends: 23 [2024-10-10 21:46:25,417 INFO L226 Difference]: Without dead ends: 11 [2024-10-10 21:46:25,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:46:25,422 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:25,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-10 21:46:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-10 21:46:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-10-10 21:46:25,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2024-10-10 21:46:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:25,457 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-10-10 21:46:25,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-10-10 21:46:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 21:46:25,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:25,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:25,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:46:25,459 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:25,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:25,460 INFO L85 PathProgramCache]: Analyzing trace with hash -110725223, now seen corresponding path program 1 times [2024-10-10 21:46:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:25,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565634701] [2024-10-10 21:46:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:46:25,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565634701] [2024-10-10 21:46:25,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565634701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:25,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417058276] [2024-10-10 21:46:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:25,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:25,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:25,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:25,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:46:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:25,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:46:25,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:25,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:46:25,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417058276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:46:25,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:46:25,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:46:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715901719] [2024-10-10 21:46:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:46:25,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:46:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:46:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:46:25,711 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:25,731 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2024-10-10 21:46:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:46:25,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 21:46:25,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:25,732 INFO L225 Difference]: With dead ends: 18 [2024-10-10 21:46:25,732 INFO L226 Difference]: Without dead ends: 12 [2024-10-10 21:46:25,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:46:25,735 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:25,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-10 21:46:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-10 21:46:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-10-10 21:46:25,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2024-10-10 21:46:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:25,742 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-10 21:46:25,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-10-10 21:46:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:46:25,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:25,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:25,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:46:25,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:25,946 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:25,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1914134572, now seen corresponding path program 1 times [2024-10-10 21:46:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079872761] [2024-10-10 21:46:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079872761] [2024-10-10 21:46:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079872761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400804544] [2024-10-10 21:46:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:26,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:26,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:46:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:26,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:46:26,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:26,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400804544] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:26,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:26,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:46:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104169195] [2024-10-10 21:46:26,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:26,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:46:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:46:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:46:26,182 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:26,212 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-10-10 21:46:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:46:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 21:46:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:26,214 INFO L225 Difference]: With dead ends: 24 [2024-10-10 21:46:26,214 INFO L226 Difference]: Without dead ends: 15 [2024-10-10 21:46:26,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:46:26,216 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:26,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-10 21:46:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-10 21:46:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-10-10 21:46:26,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2024-10-10 21:46:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:26,222 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-10-10 21:46:26,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-10-10 21:46:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 21:46:26,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:26,223 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:26,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:46:26,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:26,429 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:26,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1299566474, now seen corresponding path program 2 times [2024-10-10 21:46:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492573769] [2024-10-10 21:46:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:46:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492573769] [2024-10-10 21:46:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492573769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:26,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915478733] [2024-10-10 21:46:26,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:46:26,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:26,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:26,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:26,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:46:26,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:46:26,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:26,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:46:26,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:26,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:46:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915478733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:26,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-10-10 21:46:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131001614] [2024-10-10 21:46:26,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:26,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:46:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:46:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:46:26,754 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:26,794 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2024-10-10 21:46:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:46:26,795 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-10 21:46:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:26,796 INFO L225 Difference]: With dead ends: 31 [2024-10-10 21:46:26,796 INFO L226 Difference]: Without dead ends: 22 [2024-10-10 21:46:26,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:46:26,798 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:26,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-10 21:46:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-10 21:46:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-10 21:46:26,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-10-10 21:46:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:26,805 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-10 21:46:26,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-10 21:46:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-10 21:46:26,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:26,807 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:26,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:46:27,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:27,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:27,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:27,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1011629669, now seen corresponding path program 3 times [2024-10-10 21:46:27,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:27,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457075429] [2024-10-10 21:46:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:27,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 21:46:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457075429] [2024-10-10 21:46:27,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457075429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:27,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628948992] [2024-10-10 21:46:27,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:46:27,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:27,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:27,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:27,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:46:27,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 21:46:27,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:27,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:46:27,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:46:27,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:46:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628948992] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:27,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2024-10-10 21:46:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469766733] [2024-10-10 21:46:27,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:27,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 21:46:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 21:46:27,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:46:27,509 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:27,557 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2024-10-10 21:46:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-10 21:46:27,557 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-10 21:46:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:27,558 INFO L225 Difference]: With dead ends: 37 [2024-10-10 21:46:27,559 INFO L226 Difference]: Without dead ends: 27 [2024-10-10 21:46:27,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:46:27,560 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:27,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-10 21:46:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-10 21:46:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-10-10 21:46:27,569 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2024-10-10 21:46:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:27,570 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-10-10 21:46:27,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-10-10 21:46:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 21:46:27,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:27,572 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:27,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:46:27,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:27,773 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:27,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1968010247, now seen corresponding path program 4 times [2024-10-10 21:46:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:27,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746270166] [2024-10-10 21:46:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:28,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:28,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746270166] [2024-10-10 21:46:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746270166] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207722939] [2024-10-10 21:46:28,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:46:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:28,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:28,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:28,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:46:28,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:46:28,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:28,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 21:46:28,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:28,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207722939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:28,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-10-10 21:46:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274829743] [2024-10-10 21:46:28,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:28,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-10 21:46:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-10 21:46:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:46:28,475 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:28,524 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-10 21:46:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-10 21:46:28,525 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-10 21:46:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:28,526 INFO L225 Difference]: With dead ends: 54 [2024-10-10 21:46:28,526 INFO L226 Difference]: Without dead ends: 40 [2024-10-10 21:46:28,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:46:28,528 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:28,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:46:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-10 21:46:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-10 21:46:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-10-10 21:46:28,535 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2024-10-10 21:46:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:28,535 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-10-10 21:46:28,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-10-10 21:46:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-10 21:46:28,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:28,536 INFO L215 NwaCegarLoop]: trace histogram [24, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:28,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:46:28,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:28,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:28,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1704061029, now seen corresponding path program 5 times [2024-10-10 21:46:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343294113] [2024-10-10 21:46:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:29,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343294113] [2024-10-10 21:46:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343294113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631114319] [2024-10-10 21:46:29,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:46:29,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:29,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:29,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:29,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:46:31,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-10-10 21:46:31,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:31,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-10 21:46:31,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:31,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631114319] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:32,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:32,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2024-10-10 21:46:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650195392] [2024-10-10 21:46:32,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:32,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-10 21:46:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:32,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-10 21:46:32,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-10-10 21:46:32,543 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:32,615 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2024-10-10 21:46:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-10 21:46:32,616 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-10 21:46:32,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:32,617 INFO L225 Difference]: With dead ends: 80 [2024-10-10 21:46:32,617 INFO L226 Difference]: Without dead ends: 66 [2024-10-10 21:46:32,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-10-10 21:46:32,619 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:32,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:46:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-10-10 21:46:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-10-10 21:46:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-10-10 21:46:32,627 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 38 [2024-10-10 21:46:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:32,627 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-10-10 21:46:32,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-10-10 21:46:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-10 21:46:32,629 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:32,629 INFO L215 NwaCegarLoop]: trace histogram [50, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:32,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:46:32,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 21:46:32,830 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:32,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1657170011, now seen corresponding path program 6 times [2024-10-10 21:46:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709531809] [2024-10-10 21:46:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-10 21:46:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:34,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709531809] [2024-10-10 21:46:34,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709531809] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:34,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540338361] [2024-10-10 21:46:34,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:46:34,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:34,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:34,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:46:35,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-10 21:46:35,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:35,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-10 21:46:35,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-10-10 21:46:35,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2024-10-10 21:46:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540338361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:35,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:35,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 10, 9] total 68 [2024-10-10 21:46:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366946573] [2024-10-10 21:46:35,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:35,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-10 21:46:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-10 21:46:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1550, Invalid=3006, Unknown=0, NotChecked=0, Total=4556 [2024-10-10 21:46:35,683 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 68 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 68 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:35,773 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2024-10-10 21:46:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-10 21:46:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 68 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-10 21:46:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:35,774 INFO L225 Difference]: With dead ends: 89 [2024-10-10 21:46:35,774 INFO L226 Difference]: Without dead ends: 75 [2024-10-10 21:46:35,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1550, Invalid=3006, Unknown=0, NotChecked=0, Total=4556 [2024-10-10 21:46:35,777 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:35,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:46:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-10 21:46:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-10 21:46:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-10-10 21:46:35,785 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 64 [2024-10-10 21:46:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:35,785 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-10-10 21:46:35,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 68 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-10-10 21:46:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-10 21:46:35,787 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:35,787 INFO L215 NwaCegarLoop]: trace histogram [51, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:35,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:46:35,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:35,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:35,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash -905061767, now seen corresponding path program 7 times [2024-10-10 21:46:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646348822] [2024-10-10 21:46:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:46:37,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646348822] [2024-10-10 21:46:37,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646348822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568490648] [2024-10-10 21:46:37,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 21:46:37,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:37,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:37,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:37,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:46:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:38,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-10 21:46:38,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:46:38,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:46:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568490648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:40,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:40,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 106 [2024-10-10 21:46:40,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731022533] [2024-10-10 21:46:40,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:40,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-10-10 21:46:40,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-10-10 21:46:40,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2024-10-10 21:46:40,937 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 107 states, 107 states have (on average 1.074766355140187) internal successors, (115), 106 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:41,069 INFO L93 Difference]: Finished difference Result 150 states and 206 transitions. [2024-10-10 21:46:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-10-10 21:46:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.074766355140187) internal successors, (115), 106 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-10 21:46:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:41,073 INFO L225 Difference]: With dead ends: 150 [2024-10-10 21:46:41,073 INFO L226 Difference]: Without dead ends: 128 [2024-10-10 21:46:41,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2024-10-10 21:46:41,079 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:41,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:46:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-10 21:46:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-10-10 21:46:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2024-10-10 21:46:41,094 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 73 [2024-10-10 21:46:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:41,094 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2024-10-10 21:46:41,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.074766355140187) internal successors, (115), 106 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2024-10-10 21:46:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-10 21:46:41,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:41,096 INFO L215 NwaCegarLoop]: trace histogram [104, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:41,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:46:41,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:41,297 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:41,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 741213467, now seen corresponding path program 8 times [2024-10-10 21:46:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:41,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461955329] [2024-10-10 21:46:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:41,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:46:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461955329] [2024-10-10 21:46:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461955329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876770701] [2024-10-10 21:46:47,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:46:47,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:47,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:47,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:47,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:46:47,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:46:47,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:47,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-10-10 21:46:47,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:46:47,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:46:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876770701] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:58,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 212 [2024-10-10 21:46:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588002070] [2024-10-10 21:46:58,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:58,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 213 states [2024-10-10 21:46:58,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2024-10-10 21:46:58,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2024-10-10 21:46:58,434 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 213 states, 213 states have (on average 1.0375586854460095) internal successors, (221), 212 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:58,764 INFO L93 Difference]: Finished difference Result 256 states and 365 transitions. [2024-10-10 21:46:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2024-10-10 21:46:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 213 states, 213 states have (on average 1.0375586854460095) internal successors, (221), 212 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-10-10 21:46:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:58,767 INFO L225 Difference]: With dead ends: 256 [2024-10-10 21:46:58,767 INFO L226 Difference]: Without dead ends: 234 [2024-10-10 21:46:58,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2024-10-10 21:46:58,771 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:58,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:46:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-10-10 21:46:58,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-10-10 21:46:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.0128755364806867) internal successors, (236), 233 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 236 transitions. [2024-10-10 21:46:58,788 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 236 transitions. Word has length 126 [2024-10-10 21:46:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:58,788 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 236 transitions. [2024-10-10 21:46:58,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 213 states, 213 states have (on average 1.0375586854460095) internal successors, (221), 212 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 236 transitions. [2024-10-10 21:46:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-10 21:46:58,792 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:58,792 INFO L215 NwaCegarLoop]: trace histogram [210, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:58,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-10 21:46:58,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:58,993 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:58,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1163652059, now seen corresponding path program 9 times [2024-10-10 21:46:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076604975] [2024-10-10 21:46:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-10 21:47:20,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:47:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076604975] [2024-10-10 21:47:20,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076604975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:47:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560644913] [2024-10-10 21:47:20,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:47:20,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:20,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:47:20,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:47:20,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 21:47:20,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-10 21:47:20,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:47:20,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-10 21:47:20,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:47:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 210 proven. 105 refuted. 0 times theorem prover too weak. 21945 trivial. 0 not checked. [2024-10-10 21:47:22,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:47:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 22155 trivial. 0 not checked. [2024-10-10 21:47:23,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560644913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:47:23,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:47:23,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 18, 17] total 244 [2024-10-10 21:47:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087128767] [2024-10-10 21:47:23,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:47:23,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 244 states [2024-10-10 21:47:23,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:47:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2024-10-10 21:47:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23286, Invalid=36006, Unknown=0, NotChecked=0, Total=59292 [2024-10-10 21:47:23,400 INFO L87 Difference]: Start difference. First operand 234 states and 236 transitions. Second operand has 244 states, 244 states have (on average 1.0491803278688525) internal successors, (256), 244 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:47:23,842 INFO L93 Difference]: Finished difference Result 273 states and 293 transitions. [2024-10-10 21:47:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2024-10-10 21:47:23,842 INFO L78 Accepts]: Start accepts. Automaton has has 244 states, 244 states have (on average 1.0491803278688525) internal successors, (256), 244 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-10-10 21:47:23,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:47:23,844 INFO L225 Difference]: With dead ends: 273 [2024-10-10 21:47:23,844 INFO L226 Difference]: Without dead ends: 251 [2024-10-10 21:47:23,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6330 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=23286, Invalid=36006, Unknown=0, NotChecked=0, Total=59292 [2024-10-10 21:47:23,848 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:47:23,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:47:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-10 21:47:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-10-10 21:47:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.012) internal successors, (253), 250 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2024-10-10 21:47:23,865 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 232 [2024-10-10 21:47:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:47:23,865 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2024-10-10 21:47:23,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 244 states, 244 states have (on average 1.0491803278688525) internal successors, (256), 244 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:47:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2024-10-10 21:47:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-10-10 21:47:23,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:47:23,869 INFO L215 NwaCegarLoop]: trace histogram [211, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:47:23,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 21:47:24,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 21:47:24,070 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:47:24,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:47:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1966858617, now seen corresponding path program 10 times [2024-10-10 21:47:24,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:47:24,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276060329] [2024-10-10 21:47:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:47:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:47:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:47:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22831 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-10-10 21:47:45,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:47:45,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276060329] [2024-10-10 21:47:45,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276060329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:47:45,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768834393] [2024-10-10 21:47:45,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:47:45,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:47:45,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:47:45,168 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:47:45,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 21:47:45,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:47:45,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:47:45,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 213 conjuncts are in the unsatisfiable core [2024-10-10 21:47:45,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:47:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22831 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-10-10 21:47:46,014 INFO L311 TraceCheckSpWp]: Computing backward predicates...