./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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/array-memsafety/openbsd_cmemrchr-alloca-2.i -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 3a34687129125cc08371e7bb78f7bdb7a4f5274a9b22928fd388f593b6db6995 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 07:33:50,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:33:50,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 07:33:50,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:33:50,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:33:50,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:33:50,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:33:50,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:33:50,602 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 07:33:50,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 07:33:50,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:33:50,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:33:50,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:33:50,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:33:50,607 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 07:33:50,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:33:50,607 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:33:50,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:33:50,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:33:50,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:33:50,609 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:33:50,609 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:33:50,609 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:33:50,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:33:50,610 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:33:50,610 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:33:50,610 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:33:50,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:33:50,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:33:50,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:33:50,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:33:50,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:33:50,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:33:50,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:33:50,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:33:50,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:33:50,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 07:33:50,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:33:50,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:33:50,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 07:33:50,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 07:33:50,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:33:50,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a34687129125cc08371e7bb78f7bdb7a4f5274a9b22928fd388f593b6db6995 [2024-11-09 07:33:50,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:33:50,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:33:50,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:33:50,890 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:33:50,891 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:33:50,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2024-11-09 07:33:52,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:33:52,451 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:33:52,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2024-11-09 07:33:52,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828ebcfe8/72e27206fda54c519836eb4549096797/FLAGb9c6a6605 [2024-11-09 07:33:52,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828ebcfe8/72e27206fda54c519836eb4549096797 [2024-11-09 07:33:52,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:33:52,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:33:52,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:33:52,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:33:52,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:33:52,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e08779d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52, skipping insertion in model container [2024-11-09 07:33:52,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:33:52,701 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:33:52,708 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:33:52,721 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:33:52,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:33:52,743 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:33:52,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:33:52,842 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:33:52,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52 WrapperNode [2024-11-09 07:33:52,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:33:52,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:33:52,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:33:52,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:33:52,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,907 INFO L138 Inliner]: procedures = 117, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-11-09 07:33:52,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:33:52,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:33:52,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:33:52,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:33:52,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,918 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,930 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2024-11-09 07:33:52,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:33:52,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:33:52,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:33:52,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:33:52,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (1/1) ... [2024-11-09 07:33:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:33:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:33:52,980 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) [2024-11-09 07:33:52,987 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 [2024-11-09 07:33:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 07:33:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 07:33:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:33:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:33:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:33:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:33:53,111 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:33:53,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:33:53,217 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-09 07:33:53,218 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:33:53,228 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:33:53,228 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:33:53,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:33:53 BoogieIcfgContainer [2024-11-09 07:33:53,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:33:53,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:33:53,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:33:53,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:33:53,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:33:52" (1/3) ... [2024-11-09 07:33:53,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc8109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:33:53, skipping insertion in model container [2024-11-09 07:33:53,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:52" (2/3) ... [2024-11-09 07:33:53,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc8109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:33:53, skipping insertion in model container [2024-11-09 07:33:53,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:33:53" (3/3) ... [2024-11-09 07:33:53,235 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2024-11-09 07:33:53,247 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:33:53,247 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-09 07:33:53,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:33:53,296 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;@11486b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:33:53,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 07:33:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:33:53,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:53,311 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:53,311 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:53,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-09 07:33:53,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:53,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405496669] [2024-11-09 07:33:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:53,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405496669] [2024-11-09 07:33:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405496669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:53,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:33:53,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:33:53,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494490779] [2024-11-09 07:33:53,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:53,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:33:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:33:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:33:53,604 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:53,641 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-09 07:33:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:33:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:33:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:53,651 INFO L225 Difference]: With dead ends: 25 [2024-11-09 07:33:53,651 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 07:33:53,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:33:53,657 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:53,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 07:33:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 07:33:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-09 07:33:53,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 7 [2024-11-09 07:33:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:53,682 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-09 07:33:53,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-09 07:33:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:33:53,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:53,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:53,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:33:53,684 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:53,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2024-11-09 07:33:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938374231] [2024-11-09 07:33:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:53,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938374231] [2024-11-09 07:33:53,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938374231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:53,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:33:53,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:33:53,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337508509] [2024-11-09 07:33:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:53,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:33:53,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:33:53,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:33:53,935 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:54,017 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-09 07:33:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:33:54,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:33:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:54,018 INFO L225 Difference]: With dead ends: 34 [2024-11-09 07:33:54,019 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 07:33:54,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:33:54,021 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:54,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:33:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 07:33:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2024-11-09 07:33:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-09 07:33:54,029 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 7 [2024-11-09 07:33:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:54,029 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-09 07:33:54,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-09 07:33:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:33:54,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:54,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:54,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:33:54,031 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:54,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1805088679, now seen corresponding path program 1 times [2024-11-09 07:33:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:54,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342980138] [2024-11-09 07:33:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:54,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:54,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342980138] [2024-11-09 07:33:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342980138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:54,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:33:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:33:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217822416] [2024-11-09 07:33:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:54,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:33:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:33:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:33:54,279 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:54,328 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-09 07:33:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:33:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:33:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:54,328 INFO L225 Difference]: With dead ends: 30 [2024-11-09 07:33:54,329 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 07:33:54,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:33:54,330 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:54,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 69 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 07:33:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-11-09 07:33:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-09 07:33:54,333 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 7 [2024-11-09 07:33:54,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:54,333 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-09 07:33:54,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-09 07:33:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:33:54,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:54,334 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:54,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:33:54,334 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:54,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2024-11-09 07:33:54,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:54,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019722396] [2024-11-09 07:33:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:54,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019722396] [2024-11-09 07:33:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019722396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:33:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569864408] [2024-11-09 07:33:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:54,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:54,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:33:54,375 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) [2024-11-09 07:33:54,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:33:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:54,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:33:54,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:54,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:33:54,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569864408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:54,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:33:54,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 07:33:54,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426533442] [2024-11-09 07:33:54,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:54,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:33:54,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:33:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:33:54,476 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:54,498 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-09 07:33:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:33:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 07:33:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:54,502 INFO L225 Difference]: With dead ends: 32 [2024-11-09 07:33:54,502 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 07:33:54,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:33:54,503 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:54,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 07:33:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-09 07:33:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 07:33:54,507 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2024-11-09 07:33:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:54,508 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 07:33:54,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 07:33:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:33:54,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:54,508 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:54,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:33:54,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:54,709 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:54,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1579537130, now seen corresponding path program 1 times [2024-11-09 07:33:54,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:54,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119109282] [2024-11-09 07:33:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:54,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119109282] [2024-11-09 07:33:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119109282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:33:54,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146798922] [2024-11-09 07:33:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:54,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:54,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:33:54,899 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) [2024-11-09 07:33:54,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:33:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:54,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:33:54,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:55,003 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 7 [2024-11-09 07:33:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:55,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146798922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:33:55,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:33:55,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-09 07:33:55,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30162949] [2024-11-09 07:33:55,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:33:55,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:33:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:33:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:33:55,378 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:55,491 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-09 07:33:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:33:55,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 07:33:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:55,492 INFO L225 Difference]: With dead ends: 32 [2024-11-09 07:33:55,492 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 07:33:55,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:33:55,493 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:55,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 128 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 07:33:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-09 07:33:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-09 07:33:55,496 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2024-11-09 07:33:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:55,497 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-09 07:33:55,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-09 07:33:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:33:55,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:55,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:55,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:33:55,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:55,702 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:55,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:55,703 INFO L85 PathProgramCache]: Analyzing trace with hash -373722351, now seen corresponding path program 1 times [2024-11-09 07:33:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833911914] [2024-11-09 07:33:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:55,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:55,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833911914] [2024-11-09 07:33:55,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833911914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:55,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:33:55,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:33:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115599882] [2024-11-09 07:33:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:55,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:33:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:33:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:33:55,757 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:55,797 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-09 07:33:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:33:55,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 07:33:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:55,799 INFO L225 Difference]: With dead ends: 31 [2024-11-09 07:33:55,799 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 07:33:55,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:33:55,799 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:55,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 67 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 07:33:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-09 07:33:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-09 07:33:55,802 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 14 [2024-11-09 07:33:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:55,802 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-09 07:33:55,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-09 07:33:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:33:55,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:55,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:55,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:33:55,805 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:55,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash -373722350, now seen corresponding path program 1 times [2024-11-09 07:33:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:55,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876006040] [2024-11-09 07:33:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:56,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:56,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876006040] [2024-11-09 07:33:56,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876006040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:33:56,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911177826] [2024-11-09 07:33:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:56,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:56,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:33:56,064 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) [2024-11-09 07:33:56,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:33:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:56,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:33:56,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:56,117 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 [2024-11-09 07:33:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:56,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911177826] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:33:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:33:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 17 [2024-11-09 07:33:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313881674] [2024-11-09 07:33:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:56,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:33:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:33:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:33:56,509 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:56,596 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-11-09 07:33:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:33:56,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 07:33:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:56,597 INFO L225 Difference]: With dead ends: 32 [2024-11-09 07:33:56,597 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 07:33:56,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:33:56,598 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:56,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:33:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 07:33:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 07:33:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-09 07:33:56,603 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14 [2024-11-09 07:33:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:56,603 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-09 07:33:56,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-09 07:33:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:33:56,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:56,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:56,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:33:56,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:56,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:56,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash 327342228, now seen corresponding path program 1 times [2024-11-09 07:33:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:56,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987432013] [2024-11-09 07:33:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:57,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987432013] [2024-11-09 07:33:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987432013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:33:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566022265] [2024-11-09 07:33:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:57,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:57,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:33:57,087 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) [2024-11-09 07:33:57,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:33:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:57,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 07:33:57,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:57,153 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 7 [2024-11-09 07:33:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:57,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566022265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:33:57,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:33:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-09 07:33:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592295888] [2024-11-09 07:33:57,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:33:57,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:33:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:33:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:33:57,692 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:57,915 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2024-11-09 07:33:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:33:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 07:33:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:57,917 INFO L225 Difference]: With dead ends: 52 [2024-11-09 07:33:57,917 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 07:33:57,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-09 07:33:57,918 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:57,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 130 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:33:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 07:33:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-09 07:33:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.25) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-09 07:33:57,927 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2024-11-09 07:33:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:57,928 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-09 07:33:57,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-09 07:33:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:33:57,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:57,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:57,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:33:58,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:58,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:58,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1007310944, now seen corresponding path program 1 times [2024-11-09 07:33:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338388291] [2024-11-09 07:33:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:58,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:33:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338388291] [2024-11-09 07:33:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338388291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:58,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:33:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:33:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159466869] [2024-11-09 07:33:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:58,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:33:58,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:33:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:33:58,258 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:58,288 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-11-09 07:33:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:33:58,289 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 07:33:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:58,289 INFO L225 Difference]: With dead ends: 45 [2024-11-09 07:33:58,289 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 07:33:58,289 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 [2024-11-09 07:33:58,289 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:58,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 07:33:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-09 07:33:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-09 07:33:58,295 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 17 [2024-11-09 07:33:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:58,295 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-09 07:33:58,295 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-09 07:33:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:33:58,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:58,296 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:58,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:33:58,296 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:58,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1656754904, now seen corresponding path program 1 times [2024-11-09 07:33:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:58,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29577586] [2024-11-09 07:33:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:33:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29577586] [2024-11-09 07:33:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29577586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:58,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:33:58,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:33:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074084604] [2024-11-09 07:33:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:58,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:33:58,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:33:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:33:58,431 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:58,477 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-11-09 07:33:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:33:58,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 07:33:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:58,481 INFO L225 Difference]: With dead ends: 47 [2024-11-09 07:33:58,481 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 07:33:58,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:33:58,482 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:58,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:33:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 07:33:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 07:33:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-09 07:33:58,484 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 19 [2024-11-09 07:33:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:58,484 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-09 07:33:58,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-09 07:33:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:33:58,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:58,488 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:58,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:33:58,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:58,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1617144038, now seen corresponding path program 1 times [2024-11-09 07:33:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849333690] [2024-11-09 07:33:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:33:58,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849333690] [2024-11-09 07:33:58,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849333690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:33:58,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834423931] [2024-11-09 07:33:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:58,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:33:58,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:33:58,721 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) [2024-11-09 07:33:58,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:33:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:58,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:33:58,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:58,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834423931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:33:59,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:33:59,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-09 07:33:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041939783] [2024-11-09 07:33:59,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:33:59,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:33:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:33:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:33:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:33:59,200 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:33:59,362 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-09 07:33:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:33:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 07:33:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:33:59,363 INFO L225 Difference]: With dead ends: 41 [2024-11-09 07:33:59,363 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 07:33:59,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:33:59,364 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:33:59,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 95 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:33:59,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 07:33:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 07:33:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-09 07:33:59,366 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2024-11-09 07:33:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:33:59,366 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-09 07:33:59,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:33:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-09 07:33:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 07:33:59,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:33:59,374 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:33:59,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 07:33:59,575 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,SelfDestructingSolverStorable10 [2024-11-09 07:33:59,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:33:59,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:33:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash -309577815, now seen corresponding path program 2 times [2024-11-09 07:33:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:33:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150921477] [2024-11-09 07:33:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:33:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:33:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150921477] [2024-11-09 07:34:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150921477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460148891] [2024-11-09 07:34:00,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:00,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:00,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:00,062 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) [2024-11-09 07:34:00,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:34:00,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:00,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:00,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 07:34:00,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:00,135 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 7 [2024-11-09 07:34:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:00,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460148891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:01,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 27 [2024-11-09 07:34:01,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141711129] [2024-11-09 07:34:01,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:01,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:34:01,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:34:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-09 07:34:01,324 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:01,856 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-11-09 07:34:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 07:34:01,857 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 07:34:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:01,857 INFO L225 Difference]: With dead ends: 47 [2024-11-09 07:34:01,857 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 07:34:01,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 07:34:01,860 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:01,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 07:34:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-09 07:34:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-11-09 07:34:01,869 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 23 [2024-11-09 07:34:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:01,870 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-11-09 07:34:01,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-11-09 07:34:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:34:01,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:01,870 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:01,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:02,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:02,071 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:02,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1959608107, now seen corresponding path program 2 times [2024-11-09 07:34:02,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:02,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946904334] [2024-11-09 07:34:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:02,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:02,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946904334] [2024-11-09 07:34:02,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946904334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:02,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667882086] [2024-11-09 07:34:02,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:02,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:02,637 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) [2024-11-09 07:34:02,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:34:02,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 07:34:02,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:02,689 WARN L253 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:34:02,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:02,755 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 [2024-11-09 07:34:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:34:03,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:34:03,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667882086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:03,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:34:03,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 18 [2024-11-09 07:34:03,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800080443] [2024-11-09 07:34:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:03,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:34:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:34:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-09 07:34:03,122 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:03,342 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-09 07:34:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:34:03,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 07:34:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:03,343 INFO L225 Difference]: With dead ends: 41 [2024-11-09 07:34:03,343 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 07:34:03,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:34:03,347 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:03,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 07:34:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2024-11-09 07:34:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-09 07:34:03,350 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2024-11-09 07:34:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:03,351 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-09 07:34:03,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-09 07:34:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:34:03,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:03,355 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:03,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:03,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:03,556 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:03,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1540133135, now seen corresponding path program 3 times [2024-11-09 07:34:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:03,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446343040] [2024-11-09 07:34:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:03,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:03,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:03,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446343040] [2024-11-09 07:34:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446343040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635037333] [2024-11-09 07:34:03,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:34:03,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:03,843 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) [2024-11-09 07:34:03,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:34:03,946 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 07:34:03,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:03,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:34:03,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:04,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635037333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:04,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-09 07:34:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764048291] [2024-11-09 07:34:04,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:04,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 07:34:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 07:34:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-09 07:34:04,202 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:04,381 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-11-09 07:34:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:34:04,382 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 07:34:04,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:04,382 INFO L225 Difference]: With dead ends: 48 [2024-11-09 07:34:04,382 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 07:34:04,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-09 07:34:04,383 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:04,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 189 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 07:34:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-09 07:34:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-09 07:34:04,384 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2024-11-09 07:34:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:04,384 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-09 07:34:04,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-09 07:34:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:34:04,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:04,385 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:04,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:04,592 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,SelfDestructingSolverStorable13 [2024-11-09 07:34:04,593 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:04,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash 884722574, now seen corresponding path program 4 times [2024-11-09 07:34:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101988989] [2024-11-09 07:34:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101988989] [2024-11-09 07:34:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101988989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452730246] [2024-11-09 07:34:05,234 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:34:05,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:05,236 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) [2024-11-09 07:34:05,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:34:05,296 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:34:05,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:05,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 07:34:05,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:05,310 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 [2024-11-09 07:34:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:06,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:07,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452730246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:07,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:07,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2024-11-09 07:34:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464017881] [2024-11-09 07:34:07,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:07,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 07:34:07,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 07:34:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 07:34:07,051 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 38 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 38 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:07,600 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-11-09 07:34:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:34:07,601 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 38 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-09 07:34:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:07,601 INFO L225 Difference]: With dead ends: 51 [2024-11-09 07:34:07,601 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 07:34:07,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=185, Invalid=1795, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 07:34:07,602 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:07,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 185 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 07:34:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2024-11-09 07:34:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-11-09 07:34:07,604 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 32 [2024-11-09 07:34:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:07,604 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-11-09 07:34:07,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 38 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-11-09 07:34:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 07:34:07,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:07,605 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:07,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:34:07,809 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,SelfDestructingSolverStorable14 [2024-11-09 07:34:07,810 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:07,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -510819796, now seen corresponding path program 5 times [2024-11-09 07:34:07,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:07,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038285880] [2024-11-09 07:34:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:08,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038285880] [2024-11-09 07:34:08,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038285880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935618779] [2024-11-09 07:34:08,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:34:08,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:08,013 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) [2024-11-09 07:34:08,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:34:08,139 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 07:34:08,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:08,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 07:34:08,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:08,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935618779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:08,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-09 07:34:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052497570] [2024-11-09 07:34:08,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:08,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:34:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:34:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:34:08,455 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:08,623 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2024-11-09 07:34:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:34:08,624 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 07:34:08,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:08,624 INFO L225 Difference]: With dead ends: 62 [2024-11-09 07:34:08,624 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 07:34:08,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:34:08,625 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:08,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 266 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 07:34:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-09 07:34:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-09 07:34:08,627 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2024-11-09 07:34:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:08,627 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-09 07:34:08,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-09 07:34:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 07:34:08,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:08,628 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:08,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 07:34:08,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 07:34:08,832 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:08,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1615395281, now seen corresponding path program 6 times [2024-11-09 07:34:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853941528] [2024-11-09 07:34:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:09,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:09,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853941528] [2024-11-09 07:34:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853941528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:09,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213633837] [2024-11-09 07:34:09,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 07:34:09,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:09,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:09,670 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) [2024-11-09 07:34:09,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:34:09,820 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 07:34:09,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:09,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 07:34:09,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:09,830 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 7 [2024-11-09 07:34:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:10,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213633837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:11,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 13] total 38 [2024-11-09 07:34:11,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527471611] [2024-11-09 07:34:11,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:11,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 07:34:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 07:34:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 07:34:11,333 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 39 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 39 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:12,058 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2024-11-09 07:34:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 07:34:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 39 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 07:34:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:12,063 INFO L225 Difference]: With dead ends: 60 [2024-11-09 07:34:12,063 INFO L226 Difference]: Without dead ends: 60 [2024-11-09 07:34:12,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 07:34:12,064 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:12,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 351 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:34:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-09 07:34:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2024-11-09 07:34:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-11-09 07:34:12,066 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 41 [2024-11-09 07:34:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:12,066 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-11-09 07:34:12,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 39 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-11-09 07:34:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 07:34:12,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:12,066 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:12,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:34:12,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 07:34:12,267 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:12,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 658687019, now seen corresponding path program 7 times [2024-11-09 07:34:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881773385] [2024-11-09 07:34:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:12,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881773385] [2024-11-09 07:34:12,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881773385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:12,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366253461] [2024-11-09 07:34:12,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:34:12,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:12,506 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) [2024-11-09 07:34:12,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:34:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:12,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:34:12,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:12,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:13,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366253461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:13,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2024-11-09 07:34:13,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259739196] [2024-11-09 07:34:13,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:13,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:34:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:34:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-11-09 07:34:13,080 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:13,263 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-11-09 07:34:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 07:34:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-09 07:34:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:13,264 INFO L225 Difference]: With dead ends: 76 [2024-11-09 07:34:13,264 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 07:34:13,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2024-11-09 07:34:13,264 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:13,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 374 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 07:34:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-09 07:34:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-09 07:34:13,266 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 46 [2024-11-09 07:34:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:13,266 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-09 07:34:13,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-09 07:34:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 07:34:13,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:13,267 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:13,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:34:13,467 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,SelfDestructingSolverStorable17 [2024-11-09 07:34:13,468 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:13,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash 40506248, now seen corresponding path program 8 times [2024-11-09 07:34:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426737886] [2024-11-09 07:34:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:14,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:14,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426737886] [2024-11-09 07:34:14,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426737886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:14,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316482674] [2024-11-09 07:34:14,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:14,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:14,301 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) [2024-11-09 07:34:14,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:34:14,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:14,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:14,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 07:34:14,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:14,401 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 7 [2024-11-09 07:34:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:14,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:16,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316482674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:16,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:16,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 47 [2024-11-09 07:34:16,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450095155] [2024-11-09 07:34:16,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:16,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 07:34:16,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:16,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 07:34:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:34:16,231 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:16,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:16,971 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2024-11-09 07:34:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 07:34:16,972 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-09 07:34:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:16,972 INFO L225 Difference]: With dead ends: 69 [2024-11-09 07:34:16,972 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 07:34:16,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=257, Invalid=3165, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 07:34:16,973 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:16,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 568 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:34:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 07:34:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2024-11-09 07:34:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-11-09 07:34:16,975 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 50 [2024-11-09 07:34:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:16,975 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-11-09 07:34:16,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-11-09 07:34:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 07:34:16,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:16,976 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:16,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 07:34:17,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:17,177 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:17,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1129260658, now seen corresponding path program 9 times [2024-11-09 07:34:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:17,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570458134] [2024-11-09 07:34:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570458134] [2024-11-09 07:34:17,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570458134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312844800] [2024-11-09 07:34:17,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:34:17,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:17,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:17,400 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) [2024-11-09 07:34:17,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 07:34:17,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 07:34:17,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:17,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 07:34:17,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:17,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312844800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:17,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-09 07:34:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773317766] [2024-11-09 07:34:17,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:17,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 07:34:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 07:34:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-11-09 07:34:17,986 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:18,241 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-09 07:34:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:34:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-09 07:34:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:18,242 INFO L225 Difference]: With dead ends: 90 [2024-11-09 07:34:18,242 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 07:34:18,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 07:34:18,243 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:18,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 534 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 07:34:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-09 07:34:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-09 07:34:18,245 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 55 [2024-11-09 07:34:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:18,245 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-09 07:34:18,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-09 07:34:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:34:18,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:18,246 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:18,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 07:34:18,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:18,450 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:18,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1822347189, now seen corresponding path program 10 times [2024-11-09 07:34:18,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:18,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892813740] [2024-11-09 07:34:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892813740] [2024-11-09 07:34:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892813740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728651407] [2024-11-09 07:34:19,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:34:19,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:19,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:19,231 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) [2024-11-09 07:34:19,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 07:34:19,311 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:34:19,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:19,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-09 07:34:19,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:19,321 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 [2024-11-09 07:34:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:20,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728651407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:21,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 53 [2024-11-09 07:34:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122504872] [2024-11-09 07:34:21,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:21,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 07:34:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 07:34:21,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2638, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 07:34:21,574 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 54 states, 53 states have (on average 3.188679245283019) internal successors, (169), 54 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:22,503 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2024-11-09 07:34:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:34:22,504 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.188679245283019) internal successors, (169), 54 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-09 07:34:22,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:22,504 INFO L225 Difference]: With dead ends: 78 [2024-11-09 07:34:22,504 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 07:34:22,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=320, Invalid=3840, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 07:34:22,506 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:22,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 653 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:34:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 07:34:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2024-11-09 07:34:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-11-09 07:34:22,508 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 59 [2024-11-09 07:34:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:22,508 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-11-09 07:34:22,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.188679245283019) internal successors, (169), 54 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-11-09 07:34:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 07:34:22,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:22,509 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:22,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:22,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:22,709 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:22,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash 897187429, now seen corresponding path program 11 times [2024-11-09 07:34:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:22,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951849395] [2024-11-09 07:34:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:22,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 12 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951849395] [2024-11-09 07:34:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951849395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996023809] [2024-11-09 07:34:22,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:34:22,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:22,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:22,979 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) [2024-11-09 07:34:22,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 07:34:23,089 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-09 07:34:23,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:23,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 07:34:23,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 12 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:23,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 12 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996023809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:23,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2024-11-09 07:34:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403642077] [2024-11-09 07:34:23,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:23,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 07:34:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 07:34:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 07:34:23,566 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:23,903 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2024-11-09 07:34:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 07:34:23,904 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-09 07:34:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:23,904 INFO L225 Difference]: With dead ends: 104 [2024-11-09 07:34:23,904 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 07:34:23,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=1515, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 07:34:23,905 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:23,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 735 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 07:34:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-09 07:34:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-09 07:34:23,907 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 64 [2024-11-09 07:34:23,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:23,907 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-09 07:34:23,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-09 07:34:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 07:34:23,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:23,908 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:23,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 07:34:24,109 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,SelfDestructingSolverStorable21 [2024-11-09 07:34:24,109 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:24,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2146504834, now seen corresponding path program 12 times [2024-11-09 07:34:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943035471] [2024-11-09 07:34:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:24,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943035471] [2024-11-09 07:34:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943035471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602468498] [2024-11-09 07:34:24,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 07:34:24,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:24,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:24,849 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) [2024-11-09 07:34:24,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 07:34:25,112 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-09 07:34:25,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:25,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 07:34:25,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:25,126 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 [2024-11-09 07:34:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:26,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 91 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602468498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:27,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 61 [2024-11-09 07:34:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965600767] [2024-11-09 07:34:27,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:27,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 07:34:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 07:34:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3500, Unknown=0, NotChecked=0, Total=3782 [2024-11-09 07:34:27,920 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 62 states, 61 states have (on average 3.2131147540983607) internal successors, (196), 62 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:29,659 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2024-11-09 07:34:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 07:34:29,660 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.2131147540983607) internal successors, (196), 62 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 07:34:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:29,660 INFO L225 Difference]: With dead ends: 115 [2024-11-09 07:34:29,661 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 07:34:29,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=659, Invalid=7351, Unknown=0, NotChecked=0, Total=8010 [2024-11-09 07:34:29,662 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:29,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 760 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:34:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 07:34:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 74. [2024-11-09 07:34:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2024-11-09 07:34:29,665 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 68 [2024-11-09 07:34:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:29,665 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2024-11-09 07:34:29,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.2131147540983607) internal successors, (196), 62 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2024-11-09 07:34:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 07:34:29,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:29,666 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:29,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 07:34:29,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:29,870 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:29,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:29,870 INFO L85 PathProgramCache]: Analyzing trace with hash -111069768, now seen corresponding path program 13 times [2024-11-09 07:34:29,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404945161] [2024-11-09 07:34:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 14 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:30,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404945161] [2024-11-09 07:34:30,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404945161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280839063] [2024-11-09 07:34:30,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:34:30,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:30,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:30,269 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) [2024-11-09 07:34:30,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 07:34:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:30,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 07:34:30,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 14 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:30,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 14 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280839063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:31,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:31,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2024-11-09 07:34:31,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693019327] [2024-11-09 07:34:31,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:31,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 07:34:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:31,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 07:34:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 07:34:31,010 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:31,436 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2024-11-09 07:34:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 07:34:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 07:34:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:31,437 INFO L225 Difference]: With dead ends: 118 [2024-11-09 07:34:31,438 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 07:34:31,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=2018, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 07:34:31,439 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 23 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:31,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1021 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:34:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 07:34:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-09 07:34:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-09 07:34:31,440 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 73 [2024-11-09 07:34:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:31,441 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-09 07:34:31,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-09 07:34:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 07:34:31,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:31,441 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:31,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:31,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:31,646 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:31,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:31,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1527788603, now seen corresponding path program 14 times [2024-11-09 07:34:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155581789] [2024-11-09 07:34:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:32,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155581789] [2024-11-09 07:34:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155581789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:32,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953390522] [2024-11-09 07:34:32,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:32,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:32,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:32,437 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) [2024-11-09 07:34:32,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 07:34:32,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:32,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:32,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-09 07:34:32,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:32,539 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 7 [2024-11-09 07:34:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:33,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 120 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:35,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953390522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:35,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 65 [2024-11-09 07:34:35,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823224950] [2024-11-09 07:34:35,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:35,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-09 07:34:35,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-09 07:34:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=4012, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 07:34:35,544 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 66 states, 65 states have (on average 3.4307692307692306) internal successors, (223), 66 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:36,775 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2024-11-09 07:34:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 07:34:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 3.4307692307692306) internal successors, (223), 66 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-09 07:34:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:36,776 INFO L225 Difference]: With dead ends: 96 [2024-11-09 07:34:36,776 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 07:34:36,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=418, Invalid=5902, Unknown=0, NotChecked=0, Total=6320 [2024-11-09 07:34:36,778 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:36,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1022 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:34:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 07:34:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2024-11-09 07:34:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2024-11-09 07:34:36,780 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 77 [2024-11-09 07:34:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:36,780 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2024-11-09 07:34:36,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 3.4307692307692306) internal successors, (223), 66 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2024-11-09 07:34:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 07:34:36,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:36,781 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:36,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 07:34:36,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:36,984 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:36,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash 787512735, now seen corresponding path program 15 times [2024-11-09 07:34:36,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:36,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162239391] [2024-11-09 07:34:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:36,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 16 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:37,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162239391] [2024-11-09 07:34:37,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162239391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546573028] [2024-11-09 07:34:37,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:34:37,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:37,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:37,519 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) [2024-11-09 07:34:37,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 07:34:37,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 07:34:37,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:37,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 07:34:37,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 16 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:37,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 16 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546573028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:38,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2024-11-09 07:34:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119454695] [2024-11-09 07:34:38,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:38,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 07:34:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 07:34:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 07:34:38,430 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 44 states, 44 states have (on average 3.727272727272727) internal successors, (164), 44 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:38,984 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2024-11-09 07:34:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:34:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.727272727272727) internal successors, (164), 44 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 07:34:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:38,985 INFO L225 Difference]: With dead ends: 132 [2024-11-09 07:34:38,985 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 07:34:38,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 07:34:38,986 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 22 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:38,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1281 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:34:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 07:34:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2024-11-09 07:34:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-11-09 07:34:38,987 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 82 [2024-11-09 07:34:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:38,988 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-11-09 07:34:38,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.727272727272727) internal successors, (164), 44 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-11-09 07:34:38,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 07:34:38,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:38,989 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:39,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:39,192 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,SelfDestructingSolverStorable25 [2024-11-09 07:34:39,192 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:39,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1328274820, now seen corresponding path program 16 times [2024-11-09 07:34:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:39,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003545263] [2024-11-09 07:34:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:39,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:40,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003545263] [2024-11-09 07:34:40,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003545263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:40,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551662156] [2024-11-09 07:34:40,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:34:40,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:40,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:40,247 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) [2024-11-09 07:34:40,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 07:34:40,363 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:34:40,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:40,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-09 07:34:40,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:40,378 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 [2024-11-09 07:34:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:41,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 153 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551662156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:43,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:43,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 73 [2024-11-09 07:34:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934680848] [2024-11-09 07:34:43,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:43,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-09 07:34:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-09 07:34:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=4996, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 07:34:43,711 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 74 states, 73 states have (on average 3.4246575342465753) internal successors, (250), 74 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:45,298 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2024-11-09 07:34:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 07:34:45,298 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 3.4246575342465753) internal successors, (250), 74 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-09 07:34:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:45,299 INFO L225 Difference]: With dead ends: 105 [2024-11-09 07:34:45,299 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 07:34:45,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=615, Invalid=8127, Unknown=0, NotChecked=0, Total=8742 [2024-11-09 07:34:45,300 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:45,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1234 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:34:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 07:34:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2024-11-09 07:34:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2024-11-09 07:34:45,302 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 86 [2024-11-09 07:34:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:45,302 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2024-11-09 07:34:45,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 3.4246575342465753) internal successors, (250), 74 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2024-11-09 07:34:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 07:34:45,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:45,303 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:45,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 07:34:45,503 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,SelfDestructingSolverStorable26 [2024-11-09 07:34:45,503 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:45,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1956884482, now seen corresponding path program 17 times [2024-11-09 07:34:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135955796] [2024-11-09 07:34:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:45,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 18 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:45,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135955796] [2024-11-09 07:34:45,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135955796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:45,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224788710] [2024-11-09 07:34:45,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:34:45,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:45,925 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) [2024-11-09 07:34:45,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 07:34:46,111 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-09 07:34:46,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:46,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 07:34:46,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 18 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:46,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 18 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224788710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:46,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-09 07:34:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129355377] [2024-11-09 07:34:46,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:46,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 07:34:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 07:34:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2036, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 07:34:46,797 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 47 states, 47 states have (on average 3.851063829787234) internal successors, (181), 47 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:47,363 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2024-11-09 07:34:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 07:34:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.851063829787234) internal successors, (181), 47 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-09 07:34:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:47,364 INFO L225 Difference]: With dead ends: 146 [2024-11-09 07:34:47,364 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 07:34:47,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=2804, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 07:34:47,365 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 24 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:47,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1638 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:34:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 07:34:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2024-11-09 07:34:47,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-11-09 07:34:47,367 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 91 [2024-11-09 07:34:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:47,367 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-11-09 07:34:47,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.851063829787234) internal successors, (181), 47 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-11-09 07:34:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 07:34:47,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:47,368 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:47,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:47,568 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,SelfDestructingSolverStorable27 [2024-11-09 07:34:47,569 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:47,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1756877761, now seen corresponding path program 18 times [2024-11-09 07:34:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153387741] [2024-11-09 07:34:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:48,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:48,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153387741] [2024-11-09 07:34:48,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153387741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:48,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230972942] [2024-11-09 07:34:48,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 07:34:48,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:48,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:48,674 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) [2024-11-09 07:34:48,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 07:34:48,865 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-09 07:34:48,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:48,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-09 07:34:48,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:48,876 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 7 [2024-11-09 07:34:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:49,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 190 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:52,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230972942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:52,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:52,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 67 [2024-11-09 07:34:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059970544] [2024-11-09 07:34:52,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:52,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-09 07:34:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-09 07:34:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=4220, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 07:34:52,275 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 68 states, 67 states have (on average 3.582089552238806) internal successors, (240), 68 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:53,458 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2024-11-09 07:34:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 07:34:53,459 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 3.582089552238806) internal successors, (240), 68 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-09 07:34:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:53,459 INFO L225 Difference]: With dead ends: 114 [2024-11-09 07:34:53,459 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 07:34:53,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=494, Invalid=6312, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 07:34:53,460 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:53,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1247 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:34:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 07:34:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2024-11-09 07:34:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2024-11-09 07:34:53,462 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 95 [2024-11-09 07:34:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:53,462 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2024-11-09 07:34:53,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 3.582089552238806) internal successors, (240), 68 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2024-11-09 07:34:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 07:34:53,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:53,463 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:53,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 07:34:53,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:53,669 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:53,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash -924999207, now seen corresponding path program 19 times [2024-11-09 07:34:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798921492] [2024-11-09 07:34:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:54,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798921492] [2024-11-09 07:34:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798921492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73295701] [2024-11-09 07:34:54,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:34:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:54,426 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) [2024-11-09 07:34:54,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 07:34:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:54,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 07:34:54,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:54,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:55,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73295701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:55,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2024-11-09 07:34:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037750783] [2024-11-09 07:34:55,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:55,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 07:34:55,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 07:34:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2512, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 07:34:55,463 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 52 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:56,249 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2024-11-09 07:34:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 07:34:56,250 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-09 07:34:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:56,250 INFO L225 Difference]: With dead ends: 160 [2024-11-09 07:34:56,251 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 07:34:56,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=185, Invalid=3475, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 07:34:56,252 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 26 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:56,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1755 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:34:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 07:34:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-09 07:34:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-11-09 07:34:56,254 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 100 [2024-11-09 07:34:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:56,254 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-11-09 07:34:56,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-11-09 07:34:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 07:34:56,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:56,255 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:56,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 07:34:56,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:56,459 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:34:56,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1790355830, now seen corresponding path program 20 times [2024-11-09 07:34:56,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298222797] [2024-11-09 07:34:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298222797] [2024-11-09 07:34:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298222797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369701505] [2024-11-09 07:34:57,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:57,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:57,543 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) [2024-11-09 07:34:57,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 07:34:57,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:57,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:57,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-09 07:34:57,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:57,671 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 7 [2024-11-09 07:34:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:59,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 231 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369701505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:02,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:02,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27, 27] total 83 [2024-11-09 07:35:02,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21971454] [2024-11-09 07:35:02,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:02,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-09 07:35:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-09 07:35:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=6573, Unknown=0, NotChecked=0, Total=6972 [2024-11-09 07:35:02,119 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 84 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 84 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:03,878 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2024-11-09 07:35:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 07:35:03,879 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 84 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-09 07:35:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:03,879 INFO L225 Difference]: With dead ends: 123 [2024-11-09 07:35:03,879 INFO L226 Difference]: Without dead ends: 123 [2024-11-09 07:35:03,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=593, Invalid=9507, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 07:35:03,880 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 11 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:03,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2168 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 07:35:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-09 07:35:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2024-11-09 07:35:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2024-11-09 07:35:03,886 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 104 [2024-11-09 07:35:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:03,886 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2024-11-09 07:35:03,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 84 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2024-11-09 07:35:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 07:35:03,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:03,887 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:03,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 07:35:04,087 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,SelfDestructingSolverStorable30 [2024-11-09 07:35:04,087 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:35:04,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash 45684036, now seen corresponding path program 21 times [2024-11-09 07:35:04,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685853077] [2024-11-09 07:35:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 22 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685853077] [2024-11-09 07:35:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685853077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530108684] [2024-11-09 07:35:04,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:35:04,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:04,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:04,576 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) [2024-11-09 07:35:04,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 07:35:04,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-09 07:35:04,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:04,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 07:35:04,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 22 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:04,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 22 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:05,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530108684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:05,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:05,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 57 [2024-11-09 07:35:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027939170] [2024-11-09 07:35:05,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:05,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 07:35:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 07:35:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3038, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 07:35:05,899 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:06,815 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2024-11-09 07:35:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 07:35:06,816 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-09 07:35:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:06,816 INFO L225 Difference]: With dead ends: 174 [2024-11-09 07:35:06,816 INFO L226 Difference]: Without dead ends: 117 [2024-11-09 07:35:06,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=204, Invalid=4218, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 07:35:06,821 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 25 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:06,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2564 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:35:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-09 07:35:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2024-11-09 07:35:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2024-11-09 07:35:06,823 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 109 [2024-11-09 07:35:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:06,824 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2024-11-09 07:35:06,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2024-11-09 07:35:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-09 07:35:06,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:06,824 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:06,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 07:35:07,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-09 07:35:07,025 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:35:07,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash 941772359, now seen corresponding path program 22 times [2024-11-09 07:35:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:07,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107174108] [2024-11-09 07:35:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 573 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:08,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:08,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107174108] [2024-11-09 07:35:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107174108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447495467] [2024-11-09 07:35:08,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:35:08,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:08,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:08,209 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:08,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 07:35:08,360 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:35:08,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:08,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-09 07:35:08,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:08,372 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 [2024-11-09 07:35:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 573 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:09,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 276 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447495467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:13,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29, 29] total 89 [2024-11-09 07:35:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036007176] [2024-11-09 07:35:13,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:13,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-09 07:35:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:13,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-09 07:35:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=7547, Unknown=0, NotChecked=0, Total=8010 [2024-11-09 07:35:13,024 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 90 states, 89 states have (on average 3.7191011235955056) internal successors, (331), 90 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:15,253 INFO L93 Difference]: Finished difference Result 132 states and 135 transitions. [2024-11-09 07:35:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 07:35:15,253 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 3.7191011235955056) internal successors, (331), 90 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-09 07:35:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:15,255 INFO L225 Difference]: With dead ends: 132 [2024-11-09 07:35:15,255 INFO L226 Difference]: Without dead ends: 132 [2024-11-09 07:35:15,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=675, Invalid=10881, Unknown=0, NotChecked=0, Total=11556 [2024-11-09 07:35:15,256 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:15,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2349 Invalid, 3634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:35:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-09 07:35:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 119. [2024-11-09 07:35:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2024-11-09 07:35:15,261 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 113 [2024-11-09 07:35:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:15,261 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2024-11-09 07:35:15,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 3.7191011235955056) internal successors, (331), 90 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2024-11-09 07:35:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 07:35:15,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:15,262 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:15,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 07:35:15,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:15,465 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:35:15,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 530107155, now seen corresponding path program 23 times [2024-11-09 07:35:15,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:15,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136646870] [2024-11-09 07:35:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:15,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 24 proven. 606 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:16,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:16,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136646870] [2024-11-09 07:35:16,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136646870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:16,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819337518] [2024-11-09 07:35:16,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:35:16,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:16,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:16,383 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:16,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 07:35:16,727 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-09 07:35:16,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:16,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 07:35:16,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 24 proven. 606 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:16,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 24 proven. 606 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:17,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819337518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:17,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:17,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 60 [2024-11-09 07:35:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452201339] [2024-11-09 07:35:17,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:17,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-09 07:35:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-09 07:35:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3380, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 07:35:17,814 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 60 states, 60 states have (on average 3.933333333333333) internal successors, (236), 60 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:18,763 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2024-11-09 07:35:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 07:35:18,764 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.933333333333333) internal successors, (236), 60 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2024-11-09 07:35:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:18,764 INFO L225 Difference]: With dead ends: 188 [2024-11-09 07:35:18,765 INFO L226 Difference]: Without dead ends: 126 [2024-11-09 07:35:18,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=215, Invalid=4755, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 07:35:18,765 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:18,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2630 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:35:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-09 07:35:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2024-11-09 07:35:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 122 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2024-11-09 07:35:18,772 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 118 [2024-11-09 07:35:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:18,772 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2024-11-09 07:35:18,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.933333333333333) internal successors, (236), 60 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2024-11-09 07:35:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 07:35:18,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:18,773 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:18,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 07:35:18,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:18,977 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:35:18,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 660342128, now seen corresponding path program 24 times [2024-11-09 07:35:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:18,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461446187] [2024-11-09 07:35:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461446187] [2024-11-09 07:35:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461446187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669746534] [2024-11-09 07:35:20,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 07:35:20,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:20,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:20,337 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:20,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 07:35:20,733 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-09 07:35:20,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:20,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-09 07:35:20,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:20,745 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 7 [2024-11-09 07:35:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:22,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 325 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669746534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:26,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 31, 31] total 82 [2024-11-09 07:35:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157266380] [2024-11-09 07:35:26,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:26,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-09 07:35:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-09 07:35:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=6249, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 07:35:26,173 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 83 states, 82 states have (on average 3.768292682926829) internal successors, (309), 83 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:29,061 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2024-11-09 07:35:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 07:35:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 3.768292682926829) internal successors, (309), 83 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-11-09 07:35:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:29,062 INFO L225 Difference]: With dead ends: 141 [2024-11-09 07:35:29,062 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 07:35:29,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=968, Invalid=11688, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 07:35:29,064 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 9 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:29,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1869 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2998 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:35:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 07:35:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2024-11-09 07:35:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2024-11-09 07:35:29,066 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 122 [2024-11-09 07:35:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:29,066 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2024-11-09 07:35:29,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 3.768292682926829) internal successors, (309), 83 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2024-11-09 07:35:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 07:35:29,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:29,067 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:29,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-09 07:35:29,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:29,268 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2024-11-09 07:35:29,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1490036106, now seen corresponding path program 25 times [2024-11-09 07:35:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058596066] [2024-11-09 07:35:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 26 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058596066] [2024-11-09 07:35:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058596066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231349473] [2024-11-09 07:35:29,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:35:29,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:29,948 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:29,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 07:35:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:30,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 07:35:30,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 26 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:30,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 26 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231349473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:31,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-09 07:35:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041222898] [2024-11-09 07:35:31,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:31,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 07:35:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 07:35:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3740, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 07:35:31,439 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 63 states, 63 states have (on average 4.015873015873016) internal successors, (253), 63 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)