./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/sorting_bubblesort_ground-2.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/sorting_bubblesort_ground-2.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 2719a9efd2165050483c20571c85746fdd7204d074459e12a38b31692a3fffb0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:44:49,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:44:49,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:44:49,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:44:49,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:44:49,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:44:49,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:44:49,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:44:49,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:44:49,923 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:44:49,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:44:49,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:44:49,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:44:49,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:44:49,925 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:44:49,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:44:49,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:44:49,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:44:49,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:44:49,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:44:49,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:44:49,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:44:49,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:44:49,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:44:49,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:44:49,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:44:49,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:44:49,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:44:49,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:44:49,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:44:49,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:44:49,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:44:49,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:44:49,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:44:49,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:44:49,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:44:49,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:44:49,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:44:49,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:44:49,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:44:49,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:44:49,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:44:49,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2719a9efd2165050483c20571c85746fdd7204d074459e12a38b31692a3fffb0 [2024-10-10 21:44:50,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:44:50,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:44:50,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:44:50,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:44:50,203 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:44:50,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-2.i [2024-10-10 21:44:51,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:44:51,976 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:44:51,977 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-2.i [2024-10-10 21:44:51,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d1dca5bda/c7a80103213b4b82afee3404f113e283/FLAG2e7f6877e [2024-10-10 21:44:52,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d1dca5bda/c7a80103213b4b82afee3404f113e283 [2024-10-10 21:44:52,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:44:52,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:44:52,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:44:52,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:44:52,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:44:52,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764a34d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52, skipping insertion in model container [2024-10-10 21:44:52,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:44:52,595 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/sorting_bubblesort_ground-2.i[820,833] [2024-10-10 21:44:52,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:44:52,621 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:44:52,630 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/sorting_bubblesort_ground-2.i[820,833] [2024-10-10 21:44:52,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:44:52,652 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:44:52,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52 WrapperNode [2024-10-10 21:44:52,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:44:52,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:44:52,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:44:52,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:44:52,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,734 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-10-10 21:44:52,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:44:52,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:44:52,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:44:52,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:44:52,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,772 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-10 21:44:52,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:44:52,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:44:52,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:44:52,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:44:52,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:44:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:52,826 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 21:44:52,829 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 21:44:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:44:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:44:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:44:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:44:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:44:52,947 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:44:52,949 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:44:53,073 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-10 21:44:53,073 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:44:53,109 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:44:53,109 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-10 21:44:53,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:44:53 BoogieIcfgContainer [2024-10-10 21:44:53,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:44:53,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:44:53,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:44:53,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:44:53,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:44:52" (1/3) ... [2024-10-10 21:44:53,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f39e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:44:53, skipping insertion in model container [2024-10-10 21:44:53,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (2/3) ... [2024-10-10 21:44:53,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f39e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:44:53, skipping insertion in model container [2024-10-10 21:44:53,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:44:53" (3/3) ... [2024-10-10 21:44:53,117 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-2.i [2024-10-10 21:44:53,130 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:44:53,130 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:44:53,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:44:53,178 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;@43c065c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:44:53,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:44:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 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 21:44:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 21:44:53,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:53,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:53,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:53,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1612111142, now seen corresponding path program 1 times [2024-10-10 21:44:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312252841] [2024-10-10 21:44:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,384 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 21:44:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312252841] [2024-10-10 21:44:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312252841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:44:53,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:44:53,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:44:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019758193] [2024-10-10 21:44:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:44:53,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:44:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:44:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:44:53,415 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 21:44:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:53,440 INFO L93 Difference]: Finished difference Result 35 states and 57 transitions. [2024-10-10 21:44:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:44:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 21:44:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:53,449 INFO L225 Difference]: With dead ends: 35 [2024-10-10 21:44:53,450 INFO L226 Difference]: Without dead ends: 17 [2024-10-10 21:44:53,452 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 21:44:53,456 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 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 21:44:53,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-10 21:44:53,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-10 21:44:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 21:44:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-10-10 21:44:53,480 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2024-10-10 21:44:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:53,480 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-10 21:44:53,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 21:44:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-10-10 21:44:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:44:53,481 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:53,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:53,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:44:53,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:53,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1371244853, now seen corresponding path program 1 times [2024-10-10 21:44:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:53,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12554700] [2024-10-10 21:44:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,583 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 21:44:53,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:53,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12554700] [2024-10-10 21:44:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12554700] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697995479] [2024-10-10 21:44:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:53,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:53,586 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 21:44:53,587 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 21:44:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:44:53,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:53,687 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 21:44:53,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:44:53,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697995479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:44:53,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:44:53,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:44:53,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86227061] [2024-10-10 21:44:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:44:53,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:44:53,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:44:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:44:53,690 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:44:53,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:53,715 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-10-10 21:44:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:44:53,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:44:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:53,716 INFO L225 Difference]: With dead ends: 30 [2024-10-10 21:44:53,716 INFO L226 Difference]: Without dead ends: 22 [2024-10-10 21:44:53,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 21:44:53,718 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:53,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-10 21:44:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-10 21:44:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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 21:44:53,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2024-10-10 21:44:53,725 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 10 [2024-10-10 21:44:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:53,726 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-10-10 21:44:53,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:44:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2024-10-10 21:44:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 21:44:53,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:53,727 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:53,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 21:44:53,928 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 21:44:53,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:53,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash 810154115, now seen corresponding path program 1 times [2024-10-10 21:44:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080508472] [2024-10-10 21:44:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,017 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 21:44:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080508472] [2024-10-10 21:44:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080508472] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:54,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816847823] [2024-10-10 21:44:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:54,020 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 21:44:54,022 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 21:44:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:44:54,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:44:54,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:44:54,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816847823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:44:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:44:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:44:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475634858] [2024-10-10 21:44:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:44:54,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:44:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:44:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:44:54,120 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 21:44:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:54,148 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-10-10 21:44:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:44:54,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-10 21:44:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:54,149 INFO L225 Difference]: With dead ends: 44 [2024-10-10 21:44:54,149 INFO L226 Difference]: Without dead ends: 26 [2024-10-10 21:44:54,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 21:44:54,152 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:54,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-10 21:44:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-10-10 21:44:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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 21:44:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-10-10 21:44:54,158 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2024-10-10 21:44:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:54,158 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-10-10 21:44:54,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 21:44:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-10-10 21:44:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-10 21:44:54,159 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:54,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:54,180 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 21:44:54,359 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 21:44:54,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:54,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1552667997, now seen corresponding path program 1 times [2024-10-10 21:44:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:54,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538332530] [2024-10-10 21:44:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538332530] [2024-10-10 21:44:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538332530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376522178] [2024-10-10 21:44:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:54,448 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 21:44:54,450 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 21:44:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:44:54,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376522178] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:54,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:54,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:44:54,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470994244] [2024-10-10 21:44:54,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:54,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:44:54,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:44:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:44:54,573 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:54,595 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-10-10 21:44:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:44:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-10 21:44:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:54,596 INFO L225 Difference]: With dead ends: 46 [2024-10-10 21:44:54,596 INFO L226 Difference]: Without dead ends: 26 [2024-10-10 21:44:54,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 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 21:44:54,598 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:54,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-10 21:44:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-10 21:44:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-10-10 21:44:54,606 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 16 [2024-10-10 21:44:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:54,607 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-10-10 21:44:54,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-10-10 21:44:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 21:44:54,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:54,608 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:54,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 21:44:54,809 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 21:44:54,809 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:54,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash -190909954, now seen corresponding path program 2 times [2024-10-10 21:44:54,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:54,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979033361] [2024-10-10 21:44:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:44:54,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979033361] [2024-10-10 21:44:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979033361] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678082554] [2024-10-10 21:44:54,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:44:54,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:54,936 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 21:44:54,937 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 21:44:55,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:44:55,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:55,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:44:55,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:55,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678082554] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:55,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-10-10 21:44:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112623365] [2024-10-10 21:44:55,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:55,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:44:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:44:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:44:55,158 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 21:44:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:55,215 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-10 21:44:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:44:55,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-10 21:44:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:55,216 INFO L225 Difference]: With dead ends: 61 [2024-10-10 21:44:55,217 INFO L226 Difference]: Without dead ends: 41 [2024-10-10 21:44:55,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 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 21:44:55,218 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:55,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-10 21:44:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-10-10 21:44:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 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 21:44:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-10-10 21:44:55,228 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 19 [2024-10-10 21:44:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:55,229 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-10-10 21:44:55,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 21:44:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-10-10 21:44:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 21:44:55,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:55,230 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:55,248 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 21:44:55,431 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 21:44:55,431 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:55,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1522098536, now seen corresponding path program 3 times [2024-10-10 21:44:55,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:55,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839932928] [2024-10-10 21:44:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:55,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839932928] [2024-10-10 21:44:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839932928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471663315] [2024-10-10 21:44:55,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:44:55,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:55,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:55,721 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 21:44:55,722 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 21:44:55,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-10 21:44:55,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:55,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:44:55,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:55,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471663315] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:55,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:55,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-10 21:44:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233864355] [2024-10-10 21:44:55,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:55,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:44:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:44:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:44:55,890 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:55,941 INFO L93 Difference]: Finished difference Result 85 states and 116 transitions. [2024-10-10 21:44:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 21:44:55,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-10 21:44:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:55,943 INFO L225 Difference]: With dead ends: 85 [2024-10-10 21:44:55,943 INFO L226 Difference]: Without dead ends: 61 [2024-10-10 21:44:55,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:44:55,945 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:55,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-10 21:44:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-10 21:44:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 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 21:44:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-10-10 21:44:55,954 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 28 [2024-10-10 21:44:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:55,954 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-10-10 21:44:55,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-10-10 21:44:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-10 21:44:55,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:55,956 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:55,985 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 21:44:56,156 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 21:44:56,157 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:56,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash -302265880, now seen corresponding path program 4 times [2024-10-10 21:44:56,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:56,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815094245] [2024-10-10 21:44:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:56,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 21:44:56,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:56,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815094245] [2024-10-10 21:44:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815094245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:56,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061070254] [2024-10-10 21:44:56,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:44:56,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:56,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:56,547 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 21:44:56,548 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 21:44:56,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:44:56,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:56,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:44:56,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:56,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061070254] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:56,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-10 21:44:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109378134] [2024-10-10 21:44:56,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:56,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-10 21:44:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-10 21:44:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:44:56,982 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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 21:44:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:57,091 INFO L93 Difference]: Finished difference Result 159 states and 223 transitions. [2024-10-10 21:44:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-10 21:44:57,091 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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 40 [2024-10-10 21:44:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:57,093 INFO L225 Difference]: With dead ends: 159 [2024-10-10 21:44:57,093 INFO L226 Difference]: Without dead ends: 110 [2024-10-10 21:44:57,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:44:57,096 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:57,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:44:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-10 21:44:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-10 21:44:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 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 21:44:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2024-10-10 21:44:57,108 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 40 [2024-10-10 21:44:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:57,108 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2024-10-10 21:44:57,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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 21:44:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2024-10-10 21:44:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-10 21:44:57,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:57,110 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:57,137 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 21:44:57,311 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 21:44:57,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:57,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:57,312 INFO L85 PathProgramCache]: Analyzing trace with hash 299109283, now seen corresponding path program 5 times [2024-10-10 21:44:57,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656896307] [2024-10-10 21:44:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:57,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-10 21:44:57,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:57,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656896307] [2024-10-10 21:44:57,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656896307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:57,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176969795] [2024-10-10 21:44:57,772 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:44:57,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:57,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:57,777 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 21:44:57,783 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 21:44:57,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-10 21:44:57,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:57,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:44:57,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 21:44:58,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 21:44:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176969795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:58,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 44 [2024-10-10 21:44:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342510797] [2024-10-10 21:44:58,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:58,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-10 21:44:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-10 21:44:58,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-10-10 21:44:58,802 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 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 21:44:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:59,060 INFO L93 Difference]: Finished difference Result 304 states and 432 transitions. [2024-10-10 21:44:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-10 21:44:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 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 65 [2024-10-10 21:44:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:59,063 INFO L225 Difference]: With dead ends: 304 [2024-10-10 21:44:59,067 INFO L226 Difference]: Without dead ends: 207 [2024-10-10 21:44:59,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-10-10 21:44:59,070 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 87 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:59,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 175 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:44:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-10 21:44:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-10-10 21:44:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3155339805825244) internal successors, (271), 206 states have internal predecessors, (271), 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 21:44:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2024-10-10 21:44:59,102 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 65 [2024-10-10 21:44:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:59,102 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2024-10-10 21:44:59,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 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 21:44:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2024-10-10 21:44:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-10 21:44:59,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:59,107 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:59,126 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 21:44:59,312 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 21:44:59,313 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:59,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -683125688, now seen corresponding path program 6 times [2024-10-10 21:44:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185931359] [2024-10-10 21:44:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:44:59,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:59,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185931359] [2024-10-10 21:44:59,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185931359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:59,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902800433] [2024-10-10 21:44:59,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:44:59,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:59,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:59,715 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 21:44:59,716 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 21:44:59,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-10 21:44:59,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:59,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-10 21:44:59,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:00,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:00,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902800433] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:00,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:00,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2024-10-10 21:45:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643283503] [2024-10-10 21:45:00,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:00,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-10 21:45:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-10 21:45:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-10-10 21:45:00,309 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 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 21:45:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:00,363 INFO L93 Difference]: Finished difference Result 414 states and 555 transitions. [2024-10-10 21:45:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-10 21:45:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 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 114 [2024-10-10 21:45:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:00,365 INFO L225 Difference]: With dead ends: 414 [2024-10-10 21:45:00,366 INFO L226 Difference]: Without dead ends: 221 [2024-10-10 21:45:00,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-10-10 21:45:00,368 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:00,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:00,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-10 21:45:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-10-10 21:45:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 220 states have internal predecessors, (285), 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 21:45:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 285 transitions. [2024-10-10 21:45:00,382 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 285 transitions. Word has length 114 [2024-10-10 21:45:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:00,383 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 285 transitions. [2024-10-10 21:45:00,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 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 21:45:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 285 transitions. [2024-10-10 21:45:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-10 21:45:00,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:00,394 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:00,409 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 21:45:00,594 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 21:45:00,595 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:00,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:00,596 INFO L85 PathProgramCache]: Analyzing trace with hash 544708584, now seen corresponding path program 7 times [2024-10-10 21:45:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:00,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152526404] [2024-10-10 21:45:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:01,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:01,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152526404] [2024-10-10 21:45:01,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152526404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221796852] [2024-10-10 21:45:01,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 21:45:01,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:01,593 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 21:45:01,596 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 21:45:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:01,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-10 21:45:01,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:01,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:02,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221796852] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:02,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:02,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2024-10-10 21:45:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450699770] [2024-10-10 21:45:02,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:02,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-10 21:45:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:02,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-10 21:45:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-10-10 21:45:02,784 INFO L87 Difference]: Start difference. First operand 221 states and 285 transitions. Second operand has 57 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 56 states have internal predecessors, (71), 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 21:45:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:02,856 INFO L93 Difference]: Finished difference Result 442 states and 597 transitions. [2024-10-10 21:45:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-10 21:45:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 56 states have internal predecessors, (71), 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 128 [2024-10-10 21:45:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:02,859 INFO L225 Difference]: With dead ends: 442 [2024-10-10 21:45:02,859 INFO L226 Difference]: Without dead ends: 249 [2024-10-10 21:45:02,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-10-10 21:45:02,861 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:02,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:45:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-10-10 21:45:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-10-10 21:45:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.2620967741935485) internal successors, (313), 248 states have internal predecessors, (313), 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 21:45:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 313 transitions. [2024-10-10 21:45:02,876 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 313 transitions. Word has length 128 [2024-10-10 21:45:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:02,876 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 313 transitions. [2024-10-10 21:45:02,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 56 states have internal predecessors, (71), 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 21:45:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 313 transitions. [2024-10-10 21:45:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-10 21:45:02,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:02,879 INFO L215 NwaCegarLoop]: trace histogram [54, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:02,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:45:03,083 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 21:45:03,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:03,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash 952342312, now seen corresponding path program 8 times [2024-10-10 21:45:03,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:03,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871616185] [2024-10-10 21:45:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:03,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:05,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871616185] [2024-10-10 21:45:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871616185] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138383879] [2024-10-10 21:45:05,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:45:05,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:05,431 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 21:45:05,432 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 21:45:05,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:45:05,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:05,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-10 21:45:05,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:05,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138383879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:08,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2024-10-10 21:45:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485101127] [2024-10-10 21:45:08,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:08,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-10-10 21:45:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:08,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-10-10 21:45:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-10-10 21:45:08,856 INFO L87 Difference]: Start difference. First operand 249 states and 313 transitions. Second operand has 113 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 112 states have internal predecessors, (127), 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 21:45:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:08,989 INFO L93 Difference]: Finished difference Result 498 states and 681 transitions. [2024-10-10 21:45:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-10-10 21:45:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 112 states have internal predecessors, (127), 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 156 [2024-10-10 21:45:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:08,991 INFO L225 Difference]: With dead ends: 498 [2024-10-10 21:45:08,992 INFO L226 Difference]: Without dead ends: 305 [2024-10-10 21:45:08,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-10-10 21:45:08,996 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:08,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:45:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-10-10 21:45:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-10-10 21:45:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.2138157894736843) internal successors, (369), 304 states have internal predecessors, (369), 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 21:45:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 369 transitions. [2024-10-10 21:45:09,022 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 369 transitions. Word has length 156 [2024-10-10 21:45:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:09,023 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 369 transitions. [2024-10-10 21:45:09,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 112 states have internal predecessors, (127), 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 21:45:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 369 transitions. [2024-10-10 21:45:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-10 21:45:09,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:09,026 INFO L215 NwaCegarLoop]: trace histogram [110, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:09,044 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 21:45:09,227 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 21:45:09,227 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:09,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1066830424, now seen corresponding path program 9 times [2024-10-10 21:45:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375431909] [2024-10-10 21:45:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7441 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:45:16,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375431909] [2024-10-10 21:45:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375431909] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330449898] [2024-10-10 21:45:16,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:45:16,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:16,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:16,585 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 21:45:16,586 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