./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/prefixsum_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/prefixsum_iter.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:37:40,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:37:40,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:37:40,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:37:40,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:37:40,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:37:40,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:37:40,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:37:40,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:37:40,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:37:40,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:37:40,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:37:40,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:37:40,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:37:40,517 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:37:40,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:37:40,518 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:37:40,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:37:40,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:37:40,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:37:40,518 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:37:40,521 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:37:40,522 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:37:40,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:37:40,522 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:37:40,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:37:40,523 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:37:40,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:37:40,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:37:40,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:37:40,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:37:40,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:37:40,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:37:40,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:37:40,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:37:40,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:37:40,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:37:40,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:37:40,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:37:40,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:37:40,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:37:40,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:37:40,527 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d [2024-11-19 06:37:40,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:37:40,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:37:40,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:37:40,860 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:37:40,860 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:37:40,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-11-19 06:37:42,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:37:42,465 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:37:42,466 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-11-19 06:37:42,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda072392/2c672f9fb4a048d285943555530b2375/FLAGb69b312cc [2024-11-19 06:37:42,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda072392/2c672f9fb4a048d285943555530b2375 [2024-11-19 06:37:42,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:37:42,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:37:42,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:37:42,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:37:42,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:37:42,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb5e2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42, skipping insertion in model container [2024-11-19 06:37:42,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:37:42,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:37:42,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:37:42,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:37:42,721 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:37:42,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42 WrapperNode [2024-11-19 06:37:42,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:37:42,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:37:42,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:37:42,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:37:42,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,755 INFO L138 Inliner]: procedures = 22, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2024-11-19 06:37:42,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:37:42,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:37:42,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:37:42,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:37:42,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,804 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-19 06:37:42,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:37:42,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:37:42,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:37:42,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:37:42,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (1/1) ... [2024-11-19 06:37:42,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:37:42,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:42,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 06:37:42,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 06:37:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:37:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 06:37:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 06:37:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:37:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:37:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:37:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:37:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:37:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:37:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:37:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:37:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:37:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-19 06:37:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-19 06:37:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:37:43,053 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:37:43,055 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:37:43,466 INFO L? ?]: Removed 113 outVars from TransFormulas that were not future-live. [2024-11-19 06:37:43,466 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:37:43,477 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:37:43,478 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-19 06:37:43,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:43 BoogieIcfgContainer [2024-11-19 06:37:43,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:37:43,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:37:43,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:37:43,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:37:43,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:37:42" (1/3) ... [2024-11-19 06:37:43,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32506352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:43, skipping insertion in model container [2024-11-19 06:37:43,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:42" (2/3) ... [2024-11-19 06:37:43,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32506352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:43, skipping insertion in model container [2024-11-19 06:37:43,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:43" (3/3) ... [2024-11-19 06:37:43,488 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2024-11-19 06:37:43,502 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:37:43,503 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-19 06:37:43,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:37:43,557 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=None, 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;@7389068b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:37:43,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-19 06:37:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 97 states have internal predecessors, (113), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:37:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:37:43,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:43,570 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:43,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:43,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash 637515611, now seen corresponding path program 1 times [2024-11-19 06:37:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354802186] [2024-11-19 06:37:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:37:43,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:43,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354802186] [2024-11-19 06:37:43,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354802186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361896456] [2024-11-19 06:37:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:43,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:43,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:43,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:43,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:37:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:43,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 06:37:43,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:37:43,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:37:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361896456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:43,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:37:43,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 06:37:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855866637] [2024-11-19 06:37:43,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:43,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 06:37:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 06:37:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:37:43,880 INFO L87 Difference]: Start difference. First operand has 104 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 97 states have internal predecessors, (113), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:43,896 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2024-11-19 06:37:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 06:37:43,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-19 06:37:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:43,903 INFO L225 Difference]: With dead ends: 103 [2024-11-19 06:37:43,903 INFO L226 Difference]: Without dead ends: 101 [2024-11-19 06:37:43,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:37:43,908 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:43,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-19 06:37:43,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-19 06:37:43,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.6557377049180328) internal successors, (101), 94 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:37:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-11-19 06:37:43,953 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 29 [2024-11-19 06:37:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:43,953 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-11-19 06:37:43,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-11-19 06:37:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:37:43,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:43,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:43,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 06:37:44,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 06:37:44,156 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:44,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash -243004133, now seen corresponding path program 1 times [2024-11-19 06:37:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:44,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698606104] [2024-11-19 06:37:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:44,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:44,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698606104] [2024-11-19 06:37:44,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698606104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:44,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:37:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809069467] [2024-11-19 06:37:44,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:44,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:37:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:37:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:44,392 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:44,487 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2024-11-19 06:37:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:37:44,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2024-11-19 06:37:44,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:44,491 INFO L225 Difference]: With dead ends: 99 [2024-11-19 06:37:44,491 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 06:37:44,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:44,492 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 73 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:44,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 156 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:44,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 06:37:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-19 06:37:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 92 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:37:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2024-11-19 06:37:44,502 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 29 [2024-11-19 06:37:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:44,503 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2024-11-19 06:37:44,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2024-11-19 06:37:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:37:44,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:44,505 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:44,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:37:44,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:44,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:44,505 INFO L85 PathProgramCache]: Analyzing trace with hash -243004132, now seen corresponding path program 1 times [2024-11-19 06:37:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591847876] [2024-11-19 06:37:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:44,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:45,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591847876] [2024-11-19 06:37:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591847876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:45,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:37:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28956516] [2024-11-19 06:37:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:45,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:37:45,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:37:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:37:45,074 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:37:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:45,565 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2024-11-19 06:37:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:37:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2024-11-19 06:37:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:45,567 INFO L225 Difference]: With dead ends: 164 [2024-11-19 06:37:45,567 INFO L226 Difference]: Without dead ends: 164 [2024-11-19 06:37:45,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:37:45,568 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 193 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:45,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 741 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:37:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-19 06:37:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 110. [2024-11-19 06:37:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 69 states have (on average 1.5797101449275361) internal successors, (109), 100 states have internal predecessors, (109), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-19 06:37:45,576 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 29 [2024-11-19 06:37:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:45,577 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-19 06:37:45,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:37:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-19 06:37:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 06:37:45,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:45,578 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:45,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:37:45,578 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:45,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1056806476, now seen corresponding path program 1 times [2024-11-19 06:37:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:45,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112677444] [2024-11-19 06:37:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:45,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:45,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112677444] [2024-11-19 06:37:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112677444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:45,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:45,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:37:45,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621513137] [2024-11-19 06:37:45,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:45,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:37:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:37:45,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:45,645 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:45,700 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-19 06:37:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:37:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-19 06:37:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:45,701 INFO L225 Difference]: With dead ends: 109 [2024-11-19 06:37:45,701 INFO L226 Difference]: Without dead ends: 109 [2024-11-19 06:37:45,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:45,702 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:45,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 165 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-19 06:37:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-19 06:37:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 69 states have (on average 1.565217391304348) internal successors, (108), 99 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-19 06:37:45,716 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 30 [2024-11-19 06:37:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:45,716 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-19 06:37:45,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-19 06:37:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 06:37:45,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:45,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:45,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:37:45,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:45,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1056806477, now seen corresponding path program 1 times [2024-11-19 06:37:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:45,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948277391] [2024-11-19 06:37:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:45,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:45,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948277391] [2024-11-19 06:37:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948277391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:45,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:45,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:37:45,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718957980] [2024-11-19 06:37:45,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:45,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:37:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:37:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:37:45,950 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:46,110 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2024-11-19 06:37:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:37:46,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-11-19 06:37:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:46,111 INFO L225 Difference]: With dead ends: 113 [2024-11-19 06:37:46,112 INFO L226 Difference]: Without dead ends: 113 [2024-11-19 06:37:46,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:37:46,113 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 6 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:46,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 336 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-19 06:37:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-19 06:37:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 102 states have internal predecessors, (113), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-19 06:37:46,125 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 30 [2024-11-19 06:37:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:46,125 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-19 06:37:46,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-19 06:37:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 06:37:46,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:46,126 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:46,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:37:46,127 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:46,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1924338057, now seen corresponding path program 1 times [2024-11-19 06:37:46,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:46,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76025514] [2024-11-19 06:37:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:46,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:46,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76025514] [2024-11-19 06:37:46,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76025514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73725501] [2024-11-19 06:37:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:46,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:46,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:46,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:46,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:37:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:46,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 06:37:46,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:46,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 06:37:46,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:37:46,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:46,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 06:37:46,881 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:37:46,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:37:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:37:47,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:47,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73725501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:47,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:37:47,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 18 [2024-11-19 06:37:47,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713346917] [2024-11-19 06:37:47,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:47,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 06:37:47,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:47,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 06:37:47,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:37:47,217 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:37:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:48,003 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2024-11-19 06:37:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:37:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 30 [2024-11-19 06:37:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:48,006 INFO L225 Difference]: With dead ends: 164 [2024-11-19 06:37:48,006 INFO L226 Difference]: Without dead ends: 164 [2024-11-19 06:37:48,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2024-11-19 06:37:48,007 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 430 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:48,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 767 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:37:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-19 06:37:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 111. [2024-11-19 06:37:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 71 states have (on average 1.5492957746478873) internal successors, (110), 101 states have internal predecessors, (110), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2024-11-19 06:37:48,017 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 30 [2024-11-19 06:37:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:48,019 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2024-11-19 06:37:48,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:37:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2024-11-19 06:37:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:37:48,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:48,020 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:48,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 06:37:48,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 06:37:48,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:48,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1977238640, now seen corresponding path program 1 times [2024-11-19 06:37:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270671398] [2024-11-19 06:37:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:48,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270671398] [2024-11-19 06:37:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270671398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:48,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:37:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138891378] [2024-11-19 06:37:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:48,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:37:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:37:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:37:48,327 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:48,392 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2024-11-19 06:37:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:37:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-11-19 06:37:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:48,393 INFO L225 Difference]: With dead ends: 143 [2024-11-19 06:37:48,393 INFO L226 Difference]: Without dead ends: 143 [2024-11-19 06:37:48,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:37:48,394 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 35 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:48,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 452 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-19 06:37:48,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2024-11-19 06:37:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 103 states have internal predecessors, (112), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2024-11-19 06:37:48,401 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 32 [2024-11-19 06:37:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:48,402 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2024-11-19 06:37:48,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2024-11-19 06:37:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:37:48,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:48,403 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:48,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:37:48,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:48,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1211457505, now seen corresponding path program 1 times [2024-11-19 06:37:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:48,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433838121] [2024-11-19 06:37:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:37:48,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:48,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433838121] [2024-11-19 06:37:48,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433838121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:48,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319134613] [2024-11-19 06:37:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:48,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:48,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:48,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:37:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:48,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:37:48,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:48,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 06:37:48,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-19 06:37:48,817 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:37:48,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-19 06:37:48,832 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:37:48,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:37:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:37:49,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319134613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:49,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:37:49,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2024-11-19 06:37:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756078479] [2024-11-19 06:37:49,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:49,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:37:49,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:49,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:37:49,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-19 06:37:49,416 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:37:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:50,400 INFO L93 Difference]: Finished difference Result 161 states and 178 transitions. [2024-11-19 06:37:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 06:37:50,401 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2024-11-19 06:37:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:50,402 INFO L225 Difference]: With dead ends: 161 [2024-11-19 06:37:50,402 INFO L226 Difference]: Without dead ends: 161 [2024-11-19 06:37:50,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=352, Invalid=1540, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:37:50,403 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 437 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:50,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 646 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:37:50,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-19 06:37:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 116. [2024-11-19 06:37:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 106 states have internal predecessors, (115), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2024-11-19 06:37:50,411 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 33 [2024-11-19 06:37:50,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:50,411 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2024-11-19 06:37:50,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:37:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2024-11-19 06:37:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:37:50,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:50,412 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:50,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 06:37:50,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:50,617 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:50,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1164816040, now seen corresponding path program 1 times [2024-11-19 06:37:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221663450] [2024-11-19 06:37:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221663450] [2024-11-19 06:37:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221663450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:50,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:50,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:37:50,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980291373] [2024-11-19 06:37:50,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:50,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:37:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:37:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:37:50,717 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:50,791 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2024-11-19 06:37:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:37:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-19 06:37:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:50,792 INFO L225 Difference]: With dead ends: 110 [2024-11-19 06:37:50,792 INFO L226 Difference]: Without dead ends: 110 [2024-11-19 06:37:50,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:37:50,793 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 79 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:50,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 192 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-19 06:37:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-19 06:37:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 100 states have internal predecessors, (109), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-19 06:37:50,796 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 33 [2024-11-19 06:37:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:50,796 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-19 06:37:50,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-19 06:37:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:37:50,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:50,797 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:50,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:37:50,797 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:50,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1164816041, now seen corresponding path program 1 times [2024-11-19 06:37:50,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:50,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117320328] [2024-11-19 06:37:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:37:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117320328] [2024-11-19 06:37:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117320328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 06:37:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350201933] [2024-11-19 06:37:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:50,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:37:50,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:37:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:37:50,987 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:51,206 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2024-11-19 06:37:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:37:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-19 06:37:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:51,215 INFO L225 Difference]: With dead ends: 146 [2024-11-19 06:37:51,215 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 06:37:51,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:37:51,216 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 148 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:51,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 814 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:37:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 06:37:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2024-11-19 06:37:51,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 98 states have internal predecessors, (106), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2024-11-19 06:37:51,222 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 33 [2024-11-19 06:37:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:51,222 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2024-11-19 06:37:51,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:37:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2024-11-19 06:37:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:37:51,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:51,222 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:51,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:37:51,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:51,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 805983195, now seen corresponding path program 1 times [2024-11-19 06:37:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:51,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143338761] [2024-11-19 06:37:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:51,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:51,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:51,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143338761] [2024-11-19 06:37:51,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143338761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:51,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562433629] [2024-11-19 06:37:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:51,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:51,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:51,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:51,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:37:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:51,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 06:37:51,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:51,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-19 06:37:51,710 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-19 06:37:51,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-19 06:37:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:52,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:52,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562433629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:52,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:37:52,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-11-19 06:37:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653178052] [2024-11-19 06:37:52,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:52,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 06:37:52,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:52,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 06:37:52,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:37:52,378 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:52,706 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-19 06:37:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:37:52,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2024-11-19 06:37:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:52,707 INFO L225 Difference]: With dead ends: 108 [2024-11-19 06:37:52,707 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 06:37:52,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:37:52,708 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 93 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:52,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:37:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 06:37:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-19 06:37:52,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 95 states have internal predecessors, (103), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2024-11-19 06:37:52,712 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 35 [2024-11-19 06:37:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:52,712 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2024-11-19 06:37:52,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2024-11-19 06:37:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:37:52,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:52,714 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:52,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:37:52,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:52,915 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:52,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:52,915 INFO L85 PathProgramCache]: Analyzing trace with hash -81182837, now seen corresponding path program 1 times [2024-11-19 06:37:52,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:52,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934602862] [2024-11-19 06:37:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:52,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934602862] [2024-11-19 06:37:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934602862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:37:52,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537686705] [2024-11-19 06:37:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:52,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:37:52,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:37:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:52,973 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:53,029 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2024-11-19 06:37:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:37:53,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-19 06:37:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:53,030 INFO L225 Difference]: With dead ends: 103 [2024-11-19 06:37:53,030 INFO L226 Difference]: Without dead ends: 103 [2024-11-19 06:37:53,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:37:53,030 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:53,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 154 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-19 06:37:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-19 06:37:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 73 states have (on average 1.36986301369863) internal successors, (100), 92 states have internal predecessors, (100), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2024-11-19 06:37:53,033 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 36 [2024-11-19 06:37:53,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:53,033 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2024-11-19 06:37:53,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:53,034 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2024-11-19 06:37:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:37:53,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:53,035 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:53,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:37:53,035 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:53,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:53,036 INFO L85 PathProgramCache]: Analyzing trace with hash -81182836, now seen corresponding path program 1 times [2024-11-19 06:37:53,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006300705] [2024-11-19 06:37:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:53,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:53,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006300705] [2024-11-19 06:37:53,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006300705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:53,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900473600] [2024-11-19 06:37:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:53,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:53,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:53,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:37:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:53,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 06:37:53,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:53,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900473600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:53,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:53,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-19 06:37:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331575493] [2024-11-19 06:37:53,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:53,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:37:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:37:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:37:53,242 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:53,302 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2024-11-19 06:37:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:37:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-19 06:37:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:53,303 INFO L225 Difference]: With dead ends: 134 [2024-11-19 06:37:53,303 INFO L226 Difference]: Without dead ends: 134 [2024-11-19 06:37:53,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:37:53,303 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 29 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:53,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 577 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-19 06:37:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 108. [2024-11-19 06:37:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 79 states have (on average 1.3544303797468353) internal successors, (107), 98 states have internal predecessors, (107), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2024-11-19 06:37:53,306 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 36 [2024-11-19 06:37:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:53,306 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2024-11-19 06:37:53,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2024-11-19 06:37:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 06:37:53,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:53,307 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:53,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:37:53,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 06:37:53,511 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:53,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1778259694, now seen corresponding path program 1 times [2024-11-19 06:37:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905055606] [2024-11-19 06:37:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:53,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:53,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905055606] [2024-11-19 06:37:53,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905055606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:53,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216323866] [2024-11-19 06:37:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:53,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:53,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:53,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:53,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:37:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:53,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 06:37:53,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:53,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:53,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-19 06:37:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:54,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216323866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:54,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:54,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-19 06:37:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259697695] [2024-11-19 06:37:54,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:54,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:37:54,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:37:54,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:37:54,053 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 25 states, 24 states have (on average 2.125) internal successors, (51), 25 states have internal predecessors, (51), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:54,348 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2024-11-19 06:37:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:37:54,348 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 25 states have internal predecessors, (51), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2024-11-19 06:37:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:54,349 INFO L225 Difference]: With dead ends: 106 [2024-11-19 06:37:54,349 INFO L226 Difference]: Without dead ends: 106 [2024-11-19 06:37:54,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:37:54,350 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 159 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:54,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 684 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:37:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-19 06:37:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-19 06:37:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 96 states have internal predecessors, (105), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2024-11-19 06:37:54,353 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 37 [2024-11-19 06:37:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:54,353 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2024-11-19 06:37:54,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 25 states have internal predecessors, (51), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2024-11-19 06:37:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:37:54,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:54,354 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:54,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:37:54,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:54,559 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:54,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2116695831, now seen corresponding path program 1 times [2024-11-19 06:37:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:54,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575463604] [2024-11-19 06:37:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:54,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:54,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575463604] [2024-11-19 06:37:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575463604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:54,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571652823] [2024-11-19 06:37:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:54,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:54,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:54,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:54,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:37:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:54,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:37:54,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:54,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571652823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:54,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:54,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2024-11-19 06:37:54,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908201099] [2024-11-19 06:37:54,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:54,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:37:54,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:37:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:37:54,816 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:54,899 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2024-11-19 06:37:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:37:54,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-19 06:37:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:54,900 INFO L225 Difference]: With dead ends: 118 [2024-11-19 06:37:54,900 INFO L226 Difference]: Without dead ends: 118 [2024-11-19 06:37:54,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:37:54,902 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 15 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:54,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 608 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-19 06:37:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2024-11-19 06:37:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 104 states have internal predecessors, (114), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2024-11-19 06:37:54,906 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 41 [2024-11-19 06:37:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:54,906 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2024-11-19 06:37:54,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2024-11-19 06:37:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:37:54,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:54,907 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:54,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:37:55,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:55,112 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:55,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1151933082, now seen corresponding path program 1 times [2024-11-19 06:37:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:55,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263484883] [2024-11-19 06:37:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263484883] [2024-11-19 06:37:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263484883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095302549] [2024-11-19 06:37:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:55,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:55,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:55,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:37:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:55,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 06:37:55,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:55,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:55,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 06:37:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:55,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095302549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:55,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:55,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-19 06:37:55,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554779704] [2024-11-19 06:37:55,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:55,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:37:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:55,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:37:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:37:55,575 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 21 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:55,986 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2024-11-19 06:37:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:37:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-19 06:37:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:55,987 INFO L225 Difference]: With dead ends: 157 [2024-11-19 06:37:55,987 INFO L226 Difference]: Without dead ends: 157 [2024-11-19 06:37:55,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2024-11-19 06:37:55,988 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 308 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:55,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 755 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:37:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-19 06:37:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 127. [2024-11-19 06:37:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.35) internal successors, (135), 117 states have internal predecessors, (135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2024-11-19 06:37:55,992 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 41 [2024-11-19 06:37:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:55,992 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2024-11-19 06:37:55,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2024-11-19 06:37:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:37:55,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:55,992 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:56,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 06:37:56,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 06:37:56,198 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:56,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1193029814, now seen corresponding path program 1 times [2024-11-19 06:37:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859476831] [2024-11-19 06:37:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:56,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859476831] [2024-11-19 06:37:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859476831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804176902] [2024-11-19 06:37:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:56,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:56,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:56,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:56,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:37:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:56,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 06:37:56,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:56,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:56,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:37:56,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2024-11-19 06:37:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804176902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:57,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-19 06:37:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658598779] [2024-11-19 06:37:57,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:57,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:37:57,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:37:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:37:57,041 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:57,328 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2024-11-19 06:37:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:37:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 42 [2024-11-19 06:37:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:57,330 INFO L225 Difference]: With dead ends: 138 [2024-11-19 06:37:57,330 INFO L226 Difference]: Without dead ends: 138 [2024-11-19 06:37:57,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2024-11-19 06:37:57,330 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 329 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:57,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 458 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:37:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-19 06:37:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2024-11-19 06:37:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.3627450980392157) internal successors, (139), 119 states have internal predecessors, (139), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:57,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2024-11-19 06:37:57,333 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 42 [2024-11-19 06:37:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:57,333 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2024-11-19 06:37:57,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 06:37:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2024-11-19 06:37:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:37:57,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:57,334 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:57,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:37:57,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 06:37:57,534 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:57,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:57,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1193029813, now seen corresponding path program 1 times [2024-11-19 06:37:57,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:57,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726662960] [2024-11-19 06:37:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:57,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726662960] [2024-11-19 06:37:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726662960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:57,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:37:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767317734] [2024-11-19 06:37:57,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:57,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:37:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:37:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:57,574 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:57,673 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2024-11-19 06:37:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:37:57,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-19 06:37:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:57,675 INFO L225 Difference]: With dead ends: 128 [2024-11-19 06:37:57,675 INFO L226 Difference]: Without dead ends: 128 [2024-11-19 06:37:57,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:37:57,675 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 61 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:57,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 151 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-19 06:37:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-19 06:37:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 118 states have internal predecessors, (137), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2024-11-19 06:37:57,681 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 42 [2024-11-19 06:37:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:57,685 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2024-11-19 06:37:57,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2024-11-19 06:37:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:37:57,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:57,686 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:57,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:37:57,686 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:57,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1350187180, now seen corresponding path program 1 times [2024-11-19 06:37:57,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:57,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670160524] [2024-11-19 06:37:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:57,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670160524] [2024-11-19 06:37:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670160524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699617821] [2024-11-19 06:37:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:58,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:58,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:58,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:58,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:37:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:58,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 06:37:58,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:58,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:58,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-19 06:37:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:37:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699617821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:58,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:58,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-19 06:37:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904856865] [2024-11-19 06:37:58,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:58,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 06:37:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 06:37:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2024-11-19 06:37:58,440 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 26 states, 25 states have (on average 2.52) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:37:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:58,931 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2024-11-19 06:37:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:37:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2024-11-19 06:37:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:58,932 INFO L225 Difference]: With dead ends: 150 [2024-11-19 06:37:58,933 INFO L226 Difference]: Without dead ends: 150 [2024-11-19 06:37:58,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2024-11-19 06:37:58,933 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 245 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:58,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1083 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:37:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-19 06:37:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 128. [2024-11-19 06:37:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 118 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2024-11-19 06:37:58,938 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 42 [2024-11-19 06:37:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:58,938 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2024-11-19 06:37:58,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:37:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2024-11-19 06:37:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 06:37:58,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:58,939 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:58,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:37:59,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:59,140 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:59,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash -254649841, now seen corresponding path program 1 times [2024-11-19 06:37:59,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:59,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920952075] [2024-11-19 06:37:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:59,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920952075] [2024-11-19 06:37:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920952075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116153792] [2024-11-19 06:37:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:59,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:59,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:59,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:59,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:37:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:59,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:37:59,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:59,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116153792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:59,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:59,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2024-11-19 06:37:59,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518642403] [2024-11-19 06:37:59,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:59,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:37:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:37:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:37:59,378 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:59,445 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2024-11-19 06:37:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:37:59,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-11-19 06:37:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:59,446 INFO L225 Difference]: With dead ends: 137 [2024-11-19 06:37:59,446 INFO L226 Difference]: Without dead ends: 137 [2024-11-19 06:37:59,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:37:59,447 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 61 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:59,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 460 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:59,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-19 06:37:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2024-11-19 06:37:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 118 states have internal predecessors, (135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:37:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2024-11-19 06:37:59,451 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 44 [2024-11-19 06:37:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:59,451 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2024-11-19 06:37:59,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2024-11-19 06:37:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 06:37:59,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:59,452 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:59,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 06:37:59,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:59,653 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:37:59,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 696898974, now seen corresponding path program 1 times [2024-11-19 06:37:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845208841] [2024-11-19 06:37:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:37:59,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845208841] [2024-11-19 06:37:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845208841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788790114] [2024-11-19 06:37:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:59,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:59,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:59,907 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:59,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:38:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:00,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 06:38:00,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:00,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:38:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:00,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:00,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-19 06:38:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788790114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:00,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 25 [2024-11-19 06:38:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959537945] [2024-11-19 06:38:00,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:00,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:38:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:38:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:38:00,251 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 06:38:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:00,497 INFO L93 Difference]: Finished difference Result 155 states and 178 transitions. [2024-11-19 06:38:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 06:38:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2024-11-19 06:38:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:00,499 INFO L225 Difference]: With dead ends: 155 [2024-11-19 06:38:00,499 INFO L226 Difference]: Without dead ends: 155 [2024-11-19 06:38:00,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-19 06:38:00,500 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 162 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:00,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 830 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:38:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-19 06:38:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2024-11-19 06:38:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 123 states have internal predecessors, (140), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:00,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2024-11-19 06:38:00,504 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 45 [2024-11-19 06:38:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:00,504 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2024-11-19 06:38:00,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 06:38:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2024-11-19 06:38:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 06:38:00,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:00,505 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:00,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:00,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 06:38:00,710 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:00,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash 129037855, now seen corresponding path program 1 times [2024-11-19 06:38:00,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:00,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552958013] [2024-11-19 06:38:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:00,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552958013] [2024-11-19 06:38:00,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552958013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:00,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:00,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:38:00,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859538670] [2024-11-19 06:38:00,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:00,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:38:00,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:00,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:38:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:00,753 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:00,792 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2024-11-19 06:38:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:38:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-19 06:38:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:00,793 INFO L225 Difference]: With dead ends: 132 [2024-11-19 06:38:00,793 INFO L226 Difference]: Without dead ends: 132 [2024-11-19 06:38:00,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:38:00,794 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 56 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:00,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-19 06:38:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-19 06:38:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.287037037037037) internal successors, (139), 122 states have internal predecessors, (139), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2024-11-19 06:38:00,800 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 46 [2024-11-19 06:38:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:00,800 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2024-11-19 06:38:00,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2024-11-19 06:38:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 06:38:00,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:00,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:00,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 06:38:00,801 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:00,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash 129037856, now seen corresponding path program 1 times [2024-11-19 06:38:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403474612] [2024-11-19 06:38:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:00,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403474612] [2024-11-19 06:38:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403474612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399814118] [2024-11-19 06:38:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:00,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:00,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:00,909 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:00,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:38:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:01,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 06:38:01,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:01,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:01,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 06:38:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399814118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:01,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-19 06:38:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110863946] [2024-11-19 06:38:01,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:01,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:38:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:01,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:38:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:01,177 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:38:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:01,320 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2024-11-19 06:38:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:38:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2024-11-19 06:38:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:01,321 INFO L225 Difference]: With dead ends: 139 [2024-11-19 06:38:01,321 INFO L226 Difference]: Without dead ends: 139 [2024-11-19 06:38:01,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:38:01,322 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 128 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:01,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 390 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-19 06:38:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-11-19 06:38:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 125 states have internal predecessors, (143), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2024-11-19 06:38:01,325 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 46 [2024-11-19 06:38:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:01,325 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2024-11-19 06:38:01,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:38:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2024-11-19 06:38:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 06:38:01,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:01,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:01,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:01,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 06:38:01,533 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:01,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash 423564489, now seen corresponding path program 1 times [2024-11-19 06:38:01,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:01,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219643148] [2024-11-19 06:38:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 06:38:01,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219643148] [2024-11-19 06:38:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219643148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:38:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207051770] [2024-11-19 06:38:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:38:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:38:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:38:01,640 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:01,695 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2024-11-19 06:38:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:38:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-19 06:38:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:01,698 INFO L225 Difference]: With dead ends: 146 [2024-11-19 06:38:01,698 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 06:38:01,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:38:01,699 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 23 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:01,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 378 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 06:38:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2024-11-19 06:38:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 133 states have internal predecessors, (152), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2024-11-19 06:38:01,702 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 46 [2024-11-19 06:38:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:01,702 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2024-11-19 06:38:01,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2024-11-19 06:38:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 06:38:01,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:01,703 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:01,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 06:38:01,703 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:01,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:01,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1327398805, now seen corresponding path program 1 times [2024-11-19 06:38:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:01,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138391544] [2024-11-19 06:38:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:01,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138391544] [2024-11-19 06:38:01,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138391544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:01,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706048929] [2024-11-19 06:38:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:01,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:01,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:01,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:01,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:38:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:01,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:38:01,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:01,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706048929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:01,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:01,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-19 06:38:01,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827978334] [2024-11-19 06:38:01,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:01,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 06:38:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 06:38:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:38:01,957 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:02,134 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2024-11-19 06:38:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:38:02,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-19 06:38:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:02,135 INFO L225 Difference]: With dead ends: 140 [2024-11-19 06:38:02,135 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 06:38:02,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:38:02,136 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 112 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:02,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 805 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 06:38:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2024-11-19 06:38:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.247787610619469) internal successors, (141), 126 states have internal predecessors, (141), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 155 transitions. [2024-11-19 06:38:02,139 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 155 transitions. Word has length 46 [2024-11-19 06:38:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:02,139 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 155 transitions. [2024-11-19 06:38:02,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 155 transitions. [2024-11-19 06:38:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 06:38:02,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:02,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:02,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:38:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:02,341 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:02,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1575336112, now seen corresponding path program 1 times [2024-11-19 06:38:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016346055] [2024-11-19 06:38:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:02,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016346055] [2024-11-19 06:38:02,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016346055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:02,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604136598] [2024-11-19 06:38:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:02,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:02,471 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:02,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:38:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:02,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 06:38:02,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:02,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:02,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604136598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:02,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:02,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2024-11-19 06:38:02,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846871438] [2024-11-19 06:38:02,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:02,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:38:02,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:02,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:38:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:38:02,703 INFO L87 Difference]: Start difference. First operand 136 states and 155 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:02,844 INFO L93 Difference]: Finished difference Result 189 states and 213 transitions. [2024-11-19 06:38:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:38:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-19 06:38:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:02,846 INFO L225 Difference]: With dead ends: 189 [2024-11-19 06:38:02,846 INFO L226 Difference]: Without dead ends: 189 [2024-11-19 06:38:02,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:38:02,846 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 54 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:02,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 770 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-19 06:38:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 162. [2024-11-19 06:38:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 139 states have (on average 1.2374100719424461) internal successors, (172), 152 states have internal predecessors, (172), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 186 transitions. [2024-11-19 06:38:02,853 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 186 transitions. Word has length 46 [2024-11-19 06:38:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:02,853 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 186 transitions. [2024-11-19 06:38:02,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 186 transitions. [2024-11-19 06:38:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 06:38:02,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:02,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:02,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 06:38:03,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 06:38:03,055 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:03,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1010295875, now seen corresponding path program 1 times [2024-11-19 06:38:03,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:03,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396566671] [2024-11-19 06:38:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:03,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:03,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396566671] [2024-11-19 06:38:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396566671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:03,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975307906] [2024-11-19 06:38:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:03,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:03,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:03,177 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:03,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 06:38:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:03,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:38:03,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:03,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:38:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975307906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:03,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:03,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2024-11-19 06:38:03,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872896064] [2024-11-19 06:38:03,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:03,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:38:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:38:03,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:03,388 INFO L87 Difference]: Start difference. First operand 162 states and 186 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:03,455 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2024-11-19 06:38:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:38:03,455 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-19 06:38:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:03,456 INFO L225 Difference]: With dead ends: 167 [2024-11-19 06:38:03,456 INFO L226 Difference]: Without dead ends: 167 [2024-11-19 06:38:03,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:03,457 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 14 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:03,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 577 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-19 06:38:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-19 06:38:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.2291666666666667) internal successors, (177), 157 states have internal predecessors, (177), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2024-11-19 06:38:03,461 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 50 [2024-11-19 06:38:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:03,461 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2024-11-19 06:38:03,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2024-11-19 06:38:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 06:38:03,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:03,462 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:03,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 06:38:03,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 06:38:03,663 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:03,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2075496043, now seen corresponding path program 2 times [2024-11-19 06:38:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194176155] [2024-11-19 06:38:03,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:03,679 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:03,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 06:38:03,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:03,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194176155] [2024-11-19 06:38:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194176155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:03,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194015702] [2024-11-19 06:38:03,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:03,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:03,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:03,838 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:03,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 06:38:03,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:03,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:03,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 06:38:03,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:04,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:04,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-19 06:38:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194015702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:04,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-19 06:38:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12400515] [2024-11-19 06:38:04,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:04,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 06:38:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 06:38:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:38:04,321 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:38:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:05,181 INFO L93 Difference]: Finished difference Result 219 states and 246 transitions. [2024-11-19 06:38:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 06:38:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 50 [2024-11-19 06:38:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:05,182 INFO L225 Difference]: With dead ends: 219 [2024-11-19 06:38:05,182 INFO L226 Difference]: Without dead ends: 219 [2024-11-19 06:38:05,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=1888, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 06:38:05,184 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 240 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:05,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1127 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:38:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-19 06:38:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 167. [2024-11-19 06:38:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.2222222222222223) internal successors, (176), 157 states have internal predecessors, (176), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 190 transitions. [2024-11-19 06:38:05,187 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 190 transitions. Word has length 50 [2024-11-19 06:38:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:05,187 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 190 transitions. [2024-11-19 06:38:05,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:38:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 190 transitions. [2024-11-19 06:38:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 06:38:05,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:05,188 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:05,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:05,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 06:38:05,392 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:05,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash 84132113, now seen corresponding path program 1 times [2024-11-19 06:38:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917846218] [2024-11-19 06:38:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:05,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:05,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917846218] [2024-11-19 06:38:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917846218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133846706] [2024-11-19 06:38:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:05,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:05,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:05,487 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:05,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 06:38:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:05,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 06:38:05,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:05,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133846706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:05,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:05,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 06:38:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212818252] [2024-11-19 06:38:05,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:05,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:38:05,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:38:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:38:05,804 INFO L87 Difference]: Start difference. First operand 167 states and 190 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 06:38:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:06,022 INFO L93 Difference]: Finished difference Result 187 states and 211 transitions. [2024-11-19 06:38:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:38:06,023 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 51 [2024-11-19 06:38:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:06,024 INFO L225 Difference]: With dead ends: 187 [2024-11-19 06:38:06,024 INFO L226 Difference]: Without dead ends: 187 [2024-11-19 06:38:06,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:38:06,024 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 129 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:06,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 864 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-19 06:38:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-11-19 06:38:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 164 states have (on average 1.201219512195122) internal successors, (197), 177 states have internal predecessors, (197), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 211 transitions. [2024-11-19 06:38:06,028 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 211 transitions. Word has length 51 [2024-11-19 06:38:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:06,028 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 211 transitions. [2024-11-19 06:38:06,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 06:38:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 211 transitions. [2024-11-19 06:38:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 06:38:06,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:06,029 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:06,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:06,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:38:06,236 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:06,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash -65350497, now seen corresponding path program 1 times [2024-11-19 06:38:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289965776] [2024-11-19 06:38:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289965776] [2024-11-19 06:38:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289965776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309789611] [2024-11-19 06:38:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:06,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:06,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:06,368 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:06,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 06:38:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:06,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 06:38:06,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:06,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:06,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309789611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:06,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:06,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-19 06:38:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571781445] [2024-11-19 06:38:06,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:06,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:38:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:38:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:06,640 INFO L87 Difference]: Start difference. First operand 187 states and 211 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:06,705 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2024-11-19 06:38:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:38:06,707 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2024-11-19 06:38:06,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:06,708 INFO L225 Difference]: With dead ends: 198 [2024-11-19 06:38:06,708 INFO L226 Difference]: Without dead ends: 198 [2024-11-19 06:38:06,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:38:06,708 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 38 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:06,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 593 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-19 06:38:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 176. [2024-11-19 06:38:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 166 states have internal predecessors, (182), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2024-11-19 06:38:06,711 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 51 [2024-11-19 06:38:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:06,711 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2024-11-19 06:38:06,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2024-11-19 06:38:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 06:38:06,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:06,712 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:06,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 06:38:06,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:06,913 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:06,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash 231693916, now seen corresponding path program 1 times [2024-11-19 06:38:06,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:06,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091258576] [2024-11-19 06:38:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091258576] [2024-11-19 06:38:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091258576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:06,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:38:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609006016] [2024-11-19 06:38:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:06,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:38:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:38:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:06,962 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:06,998 INFO L93 Difference]: Finished difference Result 175 states and 195 transitions. [2024-11-19 06:38:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:38:06,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2024-11-19 06:38:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:06,999 INFO L225 Difference]: With dead ends: 175 [2024-11-19 06:38:06,999 INFO L226 Difference]: Without dead ends: 175 [2024-11-19 06:38:06,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:06,999 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 34 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:06,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 171 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-19 06:38:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-19 06:38:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 153 states have (on average 1.1830065359477124) internal successors, (181), 165 states have internal predecessors, (181), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-11-19 06:38:07,006 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 52 [2024-11-19 06:38:07,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:07,006 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-11-19 06:38:07,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:07,006 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-11-19 06:38:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:38:07,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:07,006 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:07,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 06:38:07,007 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:07,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash 381207536, now seen corresponding path program 1 times [2024-11-19 06:38:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853830095] [2024-11-19 06:38:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:07,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:07,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853830095] [2024-11-19 06:38:07,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853830095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:07,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:07,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:38:07,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586688854] [2024-11-19 06:38:07,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:07,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:38:07,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:07,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:38:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:07,045 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:38:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:07,063 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2024-11-19 06:38:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:38:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-19 06:38:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:07,064 INFO L225 Difference]: With dead ends: 174 [2024-11-19 06:38:07,064 INFO L226 Difference]: Without dead ends: 174 [2024-11-19 06:38:07,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:07,065 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 34 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:07,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 171 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-19 06:38:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-19 06:38:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 164 states have internal predecessors, (180), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2024-11-19 06:38:07,067 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 55 [2024-11-19 06:38:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:07,068 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2024-11-19 06:38:07,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:38:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2024-11-19 06:38:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:38:07,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:07,068 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:07,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 06:38:07,069 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:07,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 572275180, now seen corresponding path program 2 times [2024-11-19 06:38:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118054899] [2024-11-19 06:38:07,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:07,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:07,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118054899] [2024-11-19 06:38:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118054899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944512634] [2024-11-19 06:38:07,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:07,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:07,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:07,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:07,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 06:38:07,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:07,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:07,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 06:38:07,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:07,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:07,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-19 06:38:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944512634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:07,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-19 06:38:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405997871] [2024-11-19 06:38:07,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:07,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 06:38:07,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:07,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 06:38:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:38:07,729 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 23 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:08,380 INFO L93 Difference]: Finished difference Result 223 states and 248 transitions. [2024-11-19 06:38:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:38:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2024-11-19 06:38:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:08,382 INFO L225 Difference]: With dead ends: 223 [2024-11-19 06:38:08,382 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 06:38:08,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:38:08,382 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 96 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:08,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1028 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:38:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 06:38:08,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 179. [2024-11-19 06:38:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 169 states have internal predecessors, (186), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 200 transitions. [2024-11-19 06:38:08,385 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 200 transitions. Word has length 55 [2024-11-19 06:38:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:08,386 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 200 transitions. [2024-11-19 06:38:08,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 200 transitions. [2024-11-19 06:38:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:38:08,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:08,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:08,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:08,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-19 06:38:08,589 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:08,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:08,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1971683524, now seen corresponding path program 1 times [2024-11-19 06:38:08,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:08,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263459868] [2024-11-19 06:38:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263459868] [2024-11-19 06:38:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263459868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880172367] [2024-11-19 06:38:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:08,928 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:08,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 06:38:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:09,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:38:09,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:09,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:09,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-19 06:38:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880172367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:09,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 34 [2024-11-19 06:38:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772859374] [2024-11-19 06:38:09,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:09,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 06:38:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 06:38:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 06:38:09,937 INFO L87 Difference]: Start difference. First operand 179 states and 200 transitions. Second operand has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:38:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:11,152 INFO L93 Difference]: Finished difference Result 224 states and 253 transitions. [2024-11-19 06:38:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 06:38:11,152 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 55 [2024-11-19 06:38:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:11,153 INFO L225 Difference]: With dead ends: 224 [2024-11-19 06:38:11,153 INFO L226 Difference]: Without dead ends: 224 [2024-11-19 06:38:11,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=486, Invalid=3296, Unknown=0, NotChecked=0, Total=3782 [2024-11-19 06:38:11,155 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 492 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:11,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1009 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:38:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-19 06:38:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 179. [2024-11-19 06:38:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 160 states have (on average 1.16875) internal successors, (187), 169 states have internal predecessors, (187), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2024-11-19 06:38:11,158 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 55 [2024-11-19 06:38:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:11,159 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2024-11-19 06:38:11,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 06:38:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2024-11-19 06:38:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 06:38:11,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:11,160 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:11,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 06:38:11,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-19 06:38:11,361 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:11,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1067468064, now seen corresponding path program 1 times [2024-11-19 06:38:11,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:11,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955095363] [2024-11-19 06:38:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:11,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:11,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955095363] [2024-11-19 06:38:11,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955095363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:11,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:11,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:38:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856790224] [2024-11-19 06:38:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:11,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:38:11,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:38:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:38:11,480 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:11,596 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2024-11-19 06:38:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:38:11,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2024-11-19 06:38:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:11,597 INFO L225 Difference]: With dead ends: 178 [2024-11-19 06:38:11,597 INFO L226 Difference]: Without dead ends: 178 [2024-11-19 06:38:11,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:38:11,598 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 31 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:11,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 199 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-19 06:38:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-19 06:38:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 160 states have (on average 1.1625) internal successors, (186), 168 states have internal predecessors, (186), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:38:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2024-11-19 06:38:11,601 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 56 [2024-11-19 06:38:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:11,601 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2024-11-19 06:38:11,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2024-11-19 06:38:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 06:38:11,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:11,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:11,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 06:38:11,602 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:11,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1268228595, now seen corresponding path program 1 times [2024-11-19 06:38:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28518800] [2024-11-19 06:38:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:11,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:11,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28518800] [2024-11-19 06:38:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28518800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:11,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:11,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:38:11,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27548717] [2024-11-19 06:38:11,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:11,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:38:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:11,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:38:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:38:11,807 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:11,947 INFO L93 Difference]: Finished difference Result 177 states and 199 transitions. [2024-11-19 06:38:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:38:11,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-19 06:38:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:11,949 INFO L225 Difference]: With dead ends: 177 [2024-11-19 06:38:11,949 INFO L226 Difference]: Without dead ends: 136 [2024-11-19 06:38:11,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:38:11,950 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 32 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:11,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 265 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-19 06:38:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-19 06:38:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 129 states have internal predecessors, (145), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:38:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2024-11-19 06:38:11,955 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 57 [2024-11-19 06:38:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:11,955 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2024-11-19 06:38:11,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2024-11-19 06:38:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 06:38:11,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:11,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:11,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-19 06:38:11,956 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:11,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash -707287459, now seen corresponding path program 1 times [2024-11-19 06:38:11,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409412383] [2024-11-19 06:38:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 06:38:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409412383] [2024-11-19 06:38:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409412383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:38:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114262089] [2024-11-19 06:38:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:12,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:38:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:38:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:38:12,056 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:12,145 INFO L93 Difference]: Finished difference Result 134 states and 151 transitions. [2024-11-19 06:38:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:38:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-19 06:38:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:12,146 INFO L225 Difference]: With dead ends: 134 [2024-11-19 06:38:12,146 INFO L226 Difference]: Without dead ends: 134 [2024-11-19 06:38:12,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:12,146 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 55 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:12,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 281 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-19 06:38:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-19 06:38:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 127 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:38:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 151 transitions. [2024-11-19 06:38:12,149 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 151 transitions. Word has length 57 [2024-11-19 06:38:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:12,149 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 151 transitions. [2024-11-19 06:38:12,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:38:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 151 transitions. [2024-11-19 06:38:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 06:38:12,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:12,150 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:12,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-19 06:38:12,150 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:12,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1856118571, now seen corresponding path program 2 times [2024-11-19 06:38:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365429967] [2024-11-19 06:38:12,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:12,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:12,163 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:12,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 06:38:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365429967] [2024-11-19 06:38:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365429967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139048264] [2024-11-19 06:38:12,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:12,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:12,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:12,222 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:12,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 06:38:12,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:12,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:12,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 06:38:12,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:12,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:38:12,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139048264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:12,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:12,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 20 [2024-11-19 06:38:12,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251102838] [2024-11-19 06:38:12,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:12,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:38:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:12,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:38:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:38:12,522 INFO L87 Difference]: Start difference. First operand 134 states and 151 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:12,788 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2024-11-19 06:38:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:38:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2024-11-19 06:38:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:12,789 INFO L225 Difference]: With dead ends: 157 [2024-11-19 06:38:12,789 INFO L226 Difference]: Without dead ends: 157 [2024-11-19 06:38:12,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:38:12,789 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 100 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:12,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1107 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:38:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-19 06:38:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 134. [2024-11-19 06:38:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 127 states have internal predecessors, (142), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:38:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2024-11-19 06:38:12,792 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 59 [2024-11-19 06:38:12,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:12,792 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2024-11-19 06:38:12,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2024-11-19 06:38:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 06:38:12,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:12,793 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:12,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-19 06:38:12,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-19 06:38:12,994 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:12,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2038463677, now seen corresponding path program 1 times [2024-11-19 06:38:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:12,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548629327] [2024-11-19 06:38:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:38:13,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548629327] [2024-11-19 06:38:13,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548629327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000752246] [2024-11-19 06:38:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:13,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:13,148 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:13,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 06:38:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:13,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:38:13,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:38:13,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:38:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000752246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:13,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:38:13,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 12 [2024-11-19 06:38:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595545035] [2024-11-19 06:38:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:13,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:38:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:38:13,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:13,304 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:13,338 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-11-19 06:38:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:38:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2024-11-19 06:38:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:13,339 INFO L225 Difference]: With dead ends: 136 [2024-11-19 06:38:13,339 INFO L226 Difference]: Without dead ends: 136 [2024-11-19 06:38:13,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:13,340 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 25 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:13,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 310 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-19 06:38:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-19 06:38:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 128 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:38:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2024-11-19 06:38:13,342 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 59 [2024-11-19 06:38:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:13,343 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2024-11-19 06:38:13,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2024-11-19 06:38:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 06:38:13,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:13,343 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:13,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-19 06:38:13,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:13,548 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:13,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1495570058, now seen corresponding path program 3 times [2024-11-19 06:38:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:13,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869183229] [2024-11-19 06:38:13,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:13,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:13,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:38:13,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 06:38:13,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869183229] [2024-11-19 06:38:13,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869183229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672278299] [2024-11-19 06:38:13,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:13,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:13,947 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:13,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-19 06:38:14,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:38:14,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:14,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 06:38:14,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 06:38:14,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:15,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-19 06:38:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 06:38:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672278299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:15,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:15,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 41 [2024-11-19 06:38:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42567358] [2024-11-19 06:38:15,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:15,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-19 06:38:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-19 06:38:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1492, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:38:15,215 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 42 states, 41 states have (on average 2.4146341463414633) internal successors, (99), 42 states have internal predecessors, (99), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:38:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:16,430 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2024-11-19 06:38:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 06:38:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4146341463414633) internal successors, (99), 42 states have internal predecessors, (99), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 60 [2024-11-19 06:38:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:16,431 INFO L225 Difference]: With dead ends: 157 [2024-11-19 06:38:16,431 INFO L226 Difference]: Without dead ends: 157 [2024-11-19 06:38:16,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=822, Invalid=3084, Unknown=0, NotChecked=0, Total=3906 [2024-11-19 06:38:16,432 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 213 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:16,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 714 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:38:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-19 06:38:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2024-11-19 06:38:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 143 states have (on average 1.167832167832168) internal successors, (167), 148 states have internal predecessors, (167), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:38:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2024-11-19 06:38:16,439 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 60 [2024-11-19 06:38:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:16,439 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2024-11-19 06:38:16,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4146341463414633) internal successors, (99), 42 states have internal predecessors, (99), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:38:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2024-11-19 06:38:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 06:38:16,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:16,442 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:16,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:16,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-19 06:38:16,647 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:16,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:16,647 INFO L85 PathProgramCache]: Analyzing trace with hash -334333830, now seen corresponding path program 1 times [2024-11-19 06:38:16,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829279805] [2024-11-19 06:38:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:16,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:16,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829279805] [2024-11-19 06:38:16,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829279805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659016853] [2024-11-19 06:38:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:16,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:16,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:16,749 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:16,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-19 06:38:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:16,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 06:38:16,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:16,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:38:17,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659016853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:17,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-19 06:38:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552501354] [2024-11-19 06:38:17,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:17,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:38:17,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:38:17,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:17,033 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:17,164 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2024-11-19 06:38:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:38:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2024-11-19 06:38:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:17,165 INFO L225 Difference]: With dead ends: 165 [2024-11-19 06:38:17,165 INFO L226 Difference]: Without dead ends: 165 [2024-11-19 06:38:17,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:38:17,166 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 81 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:17,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 492 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-19 06:38:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2024-11-19 06:38:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.1655172413793105) internal successors, (169), 150 states have internal predecessors, (169), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:38:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 177 transitions. [2024-11-19 06:38:17,169 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 177 transitions. Word has length 63 [2024-11-19 06:38:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:17,169 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 177 transitions. [2024-11-19 06:38:17,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 177 transitions. [2024-11-19 06:38:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 06:38:17,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:17,170 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:17,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:17,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-19 06:38:17,371 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-19 06:38:17,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:17,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1015429983, now seen corresponding path program 3 times [2024-11-19 06:38:17,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:17,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783974415] [2024-11-19 06:38:17,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:17,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:38:17,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-19 06:38:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783974415] [2024-11-19 06:38:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783974415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984367480] [2024-11-19 06:38:18,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:18,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:18,074 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:38:18,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-19 06:38:18,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:38:18,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:18,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 06:38:18,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:18,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 06:38:18,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:38:18,391 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:38:18,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-19 06:38:18,403 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:38:18,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:38:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-19 06:38:44,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:45,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984367480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:45,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:38:45,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 27 [2024-11-19 06:38:45,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221472038] [2024-11-19 06:38:45,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:45,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:38:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:38:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1262, Unknown=6, NotChecked=0, Total=1406 [2024-11-19 06:38:45,356 INFO L87 Difference]: Start difference. First operand 157 states and 177 transitions. Second operand has 28 states, 26 states have (on average 2.5) internal successors, (65), 27 states have internal predecessors, (65), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:38:49,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:38:53,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:38:57,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]