./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrchr-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 71679b2a85162a2bf4315b62ab1893b5cfd06e20fc9e264973bd31bc9d08e300 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:30:27,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:30:27,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:30:27,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:30:27,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:30:27,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:30:27,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:30:27,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:30:27,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:30:27,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:30:27,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:30:27,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:30:27,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:30:27,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:30:27,848 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:30:27,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:30:27,849 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:30:27,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:30:27,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:30:27,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:30:27,850 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:30:27,851 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:30:27,852 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:30:27,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:30:27,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:30:27,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:30:27,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:30:27,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:30:27,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:30:27,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:30:27,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:30:27,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:30:27,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:30:27,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:30:27,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:30:27,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:30:27,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:30:27,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:30:27,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:30:27,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:30:27,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:30:27,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:30:27,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71679b2a85162a2bf4315b62ab1893b5cfd06e20fc9e264973bd31bc9d08e300 [2024-11-19 06:30:28,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:30:28,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:30:28,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:30:28,127 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:30:28,128 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:30:28,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2024-11-19 06:30:29,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:30:29,815 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:30:29,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2024-11-19 06:30:29,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5334728/49cee127d6d448b99a567fefcba06349/FLAGcfb7acd48 [2024-11-19 06:30:30,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5334728/49cee127d6d448b99a567fefcba06349 [2024-11-19 06:30:30,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:30:30,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:30:30,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:30:30,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:30:30,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:30:30,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:30,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a64a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30, skipping insertion in model container [2024-11-19 06:30:30,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:30,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:30:30,800 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:30:30,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:30:30,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:30:30,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:30:30,971 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:30:30,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30 WrapperNode [2024-11-19 06:30:30,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:30:30,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:30:30,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:30:30,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:30:30,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,036 INFO L138 Inliner]: procedures = 117, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-19 06:30:31,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:30:31,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:30:31,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:30:31,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:30:31,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,087 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-19 06:30:31,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:30:31,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:30:31,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:30:31,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:30:31,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (1/1) ... [2024-11-19 06:30:31,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:30:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:31,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 06:30:31,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 06:30:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:30:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:30:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:30:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:30:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:30:31,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:30:31,399 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:30:31,401 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:30:31,556 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-19 06:30:31,557 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:30:31,572 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:30:31,573 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 06:30:31,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:30:31 BoogieIcfgContainer [2024-11-19 06:30:31,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:30:31,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:30:31,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:30:31,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:30:31,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:30:30" (1/3) ... [2024-11-19 06:30:31,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578166c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:30:31, skipping insertion in model container [2024-11-19 06:30:31,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:30:30" (2/3) ... [2024-11-19 06:30:31,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578166c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:30:31, skipping insertion in model container [2024-11-19 06:30:31,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:30:31" (3/3) ... [2024-11-19 06:30:31,582 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrchr-alloca-2.i [2024-11-19 06:30:31,596 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:30:31,597 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-11-19 06:30:31,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:30:31,649 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;@7183891c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:30:31,650 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-19 06:30:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.7727272727272727) 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) [2024-11-19 06:30:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:30:31,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:31,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:30:31,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:31,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2024-11-19 06:30:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001171546] [2024-11-19 06:30:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001171546] [2024-11-19 06:30:31,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001171546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:31,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:31,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:30:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612672017] [2024-11-19 06:30:31,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:31,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:30:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:30:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:31,877 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.7727272727272727) 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-19 06:30:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:31,915 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-19 06:30:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:30:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-11-19 06:30:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:31,923 INFO L225 Difference]: With dead ends: 39 [2024-11-19 06:30:31,924 INFO L226 Difference]: Without dead ends: 37 [2024-11-19 06:30:31,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:31,928 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 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 [2024-11-19 06:30:31,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:30:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-19 06:30:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-11-19 06:30:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.608695652173913) internal successors, (37), 33 states have internal predecessors, (37), 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) [2024-11-19 06:30:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-19 06:30:31,953 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 6 [2024-11-19 06:30:31,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:31,953 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-19 06:30:31,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-19 06:30:31,954 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-19 06:30:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:30:31,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:31,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:30:31,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:30:31,955 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:31,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2024-11-19 06:30:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312061738] [2024-11-19 06:30:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:32,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:32,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312061738] [2024-11-19 06:30:32,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312061738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:32,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:30:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270273230] [2024-11-19 06:30:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:32,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:30:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:30:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:30:32,145 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-19 06:30:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:32,203 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-19 06:30:32,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:30:32,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-19 06:30:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:32,209 INFO L225 Difference]: With dead ends: 32 [2024-11-19 06:30:32,209 INFO L226 Difference]: Without dead ends: 32 [2024-11-19 06:30:32,209 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 [2024-11-19 06:30:32,210 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:32,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-19 06:30:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-19 06:30:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 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) [2024-11-19 06:30:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-19 06:30:32,224 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 6 [2024-11-19 06:30:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:32,227 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-19 06:30:32,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-19 06:30:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-19 06:30:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:30:32,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:32,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:30:32,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:30:32,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:32,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2024-11-19 06:30:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481780558] [2024-11-19 06:30:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481780558] [2024-11-19 06:30:32,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481780558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:32,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:30:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340686457] [2024-11-19 06:30:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:32,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:30:32,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:32,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:30:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:30:32,640 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-11-19 06:30:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:32,739 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-19 06:30:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:30:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2024-11-19 06:30:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:32,742 INFO L225 Difference]: With dead ends: 36 [2024-11-19 06:30:32,743 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:30:32,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:30:32,744 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:32,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 59 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:30:32,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-19 06:30:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.52) 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) [2024-11-19 06:30:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-19 06:30:32,750 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 6 [2024-11-19 06:30:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:32,750 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-19 06:30:32,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-11-19 06:30:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-19 06:30:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:30:32,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:32,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:32,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:30:32,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:32,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1804969643, now seen corresponding path program 1 times [2024-11-19 06:30:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168568165] [2024-11-19 06:30:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:32,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168568165] [2024-11-19 06:30:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168568165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:32,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:32,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:30:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256097372] [2024-11-19 06:30:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:32,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:30:32,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:30:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:32,966 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-19 06:30:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:33,028 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-19 06:30:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:30:33,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2024-11-19 06:30:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:33,030 INFO L225 Difference]: With dead ends: 36 [2024-11-19 06:30:33,030 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:30:33,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:33,031 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:33,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:30:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-19 06:30:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 35 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) [2024-11-19 06:30:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-19 06:30:33,044 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 7 [2024-11-19 06:30:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:33,045 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-19 06:30:33,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-19 06:30:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-19 06:30:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:30:33,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:33,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:33,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:30:33,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:33,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1806816685, now seen corresponding path program 1 times [2024-11-19 06:30:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862886372] [2024-11-19 06:30:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:33,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862886372] [2024-11-19 06:30:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862886372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:33,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:30:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867754428] [2024-11-19 06:30:33,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:33,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:30:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:30:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:30:33,341 INFO L87 Difference]: Start difference. First operand 36 states and 40 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) [2024-11-19 06:30:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:33,388 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-11-19 06:30:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:30:33,389 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 [2024-11-19 06:30:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:33,390 INFO L225 Difference]: With dead ends: 40 [2024-11-19 06:30:33,390 INFO L226 Difference]: Without dead ends: 40 [2024-11-19 06:30:33,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:30:33,391 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:33,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 61 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:30:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-19 06:30:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-11-19 06:30:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 35 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) [2024-11-19 06:30:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-19 06:30:33,395 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 7 [2024-11-19 06:30:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:33,396 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-19 06:30:33,396 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) [2024-11-19 06:30:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-19 06:30:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:30:33,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:33,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:33,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:30:33,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:33,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash -590961585, now seen corresponding path program 1 times [2024-11-19 06:30:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439591064] [2024-11-19 06:30:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439591064] [2024-11-19 06:30:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439591064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:30:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310643984] [2024-11-19 06:30:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:33,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:30:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:30:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:33,438 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:33,485 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-19 06:30:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:30:33,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:30:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:33,486 INFO L225 Difference]: With dead ends: 33 [2024-11-19 06:30:33,486 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 06:30:33,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:33,487 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:33,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:30:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 06:30:33,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-19 06:30:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 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) [2024-11-19 06:30:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-19 06:30:33,497 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 9 [2024-11-19 06:30:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:33,498 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-19 06:30:33,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-19 06:30:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:30:33,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:33,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:33,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:30:33,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:33,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash -590961584, now seen corresponding path program 1 times [2024-11-19 06:30:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:33,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73332403] [2024-11-19 06:30:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:33,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:33,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73332403] [2024-11-19 06:30:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73332403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:33,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:30:33,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996439430] [2024-11-19 06:30:33,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:33,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:30:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:30:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:30:33,632 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:33,720 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-19 06:30:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:30:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:30:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:33,721 INFO L225 Difference]: With dead ends: 41 [2024-11-19 06:30:33,722 INFO L226 Difference]: Without dead ends: 41 [2024-11-19 06:30:33,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:30:33,723 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:33,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 65 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-19 06:30:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-19 06:30:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.3529411764705883) 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) [2024-11-19 06:30:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-19 06:30:33,732 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 9 [2024-11-19 06:30:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:33,732 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-19 06:30:33,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-19 06:30:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:30:33,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:33,733 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:33,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:30:33,733 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:33,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2024-11-19 06:30:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253855547] [2024-11-19 06:30:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:33,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:34,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:34,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253855547] [2024-11-19 06:30:34,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253855547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881459664] [2024-11-19 06:30:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:34,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:34,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:34,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:34,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:30:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:34,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 06:30:34,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:34,204 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 [2024-11-19 06:30:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:34,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881459664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:34,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 06:30:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861967717] [2024-11-19 06:30:34,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:34,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:30:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:30:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:30:34,776 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 17 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) [2024-11-19 06:30:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:34,946 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-19 06:30:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:30:34,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 17 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) Word has length 10 [2024-11-19 06:30:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:34,948 INFO L225 Difference]: With dead ends: 42 [2024-11-19 06:30:34,948 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 06:30:34,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:30:34,949 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:34,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 89 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 06:30:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-11-19 06:30:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 37 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) [2024-11-19 06:30:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-19 06:30:34,953 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 10 [2024-11-19 06:30:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:34,953 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-19 06:30:34,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 17 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) [2024-11-19 06:30:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-19 06:30:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:30:34,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:34,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:34,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:35,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:35,159 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:35,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1212280010, now seen corresponding path program 1 times [2024-11-19 06:30:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:35,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250381757] [2024-11-19 06:30:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:35,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250381757] [2024-11-19 06:30:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250381757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:35,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:30:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478910745] [2024-11-19 06:30:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:35,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:30:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:30:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:30:35,384 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 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) [2024-11-19 06:30:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:35,424 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-19 06:30:35,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:30:35,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 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 [2024-11-19 06:30:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:35,426 INFO L225 Difference]: With dead ends: 37 [2024-11-19 06:30:35,426 INFO L226 Difference]: Without dead ends: 37 [2024-11-19 06:30:35,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:30:35,427 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:35,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:30:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-19 06:30:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-11-19 06:30:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3) 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) [2024-11-19 06:30:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-19 06:30:35,435 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-19 06:30:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:35,435 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-19 06:30:35,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 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) [2024-11-19 06:30:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-19 06:30:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:30:35,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:35,436 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:35,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:30:35,436 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:35,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 355615399, now seen corresponding path program 1 times [2024-11-19 06:30:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502889741] [2024-11-19 06:30:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:35,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502889741] [2024-11-19 06:30:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502889741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:35,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:30:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707790591] [2024-11-19 06:30:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:35,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:30:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:30:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:30:35,490 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:35,506 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-19 06:30:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:30:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:30:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:35,508 INFO L225 Difference]: With dead ends: 36 [2024-11-19 06:30:35,511 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:30:35,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:30:35,512 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:35,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:30:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:30:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-19 06:30:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.28125) internal successors, (41), 35 states have internal predecessors, (41), 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) [2024-11-19 06:30:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-19 06:30:35,520 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2024-11-19 06:30:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:35,520 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-19 06:30:35,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-19 06:30:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:30:35,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:35,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:35,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:30:35,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:35,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1856844668, now seen corresponding path program 1 times [2024-11-19 06:30:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036919659] [2024-11-19 06:30:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:35,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:35,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036919659] [2024-11-19 06:30:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036919659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:35,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:30:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577167484] [2024-11-19 06:30:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:35,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:30:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:30:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:30:35,874 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:36,009 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-19 06:30:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:30:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 06:30:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:36,010 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:30:36,011 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 06:30:36,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:30:36,011 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:36,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 06:30:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-19 06:30:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.236842105263158) internal successors, (47), 41 states have internal predecessors, (47), 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) [2024-11-19 06:30:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-19 06:30:36,019 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 15 [2024-11-19 06:30:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:36,020 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-19 06:30:36,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-19 06:30:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:30:36,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:36,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:36,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 06:30:36,025 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:36,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1851316614, now seen corresponding path program 1 times [2024-11-19 06:30:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279330769] [2024-11-19 06:30:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:36,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:36,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279330769] [2024-11-19 06:30:36,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279330769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:36,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:36,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:30:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305046149] [2024-11-19 06:30:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:36,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:30:36,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:30:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:30:36,225 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:36,320 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-11-19 06:30:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:30:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 06:30:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:36,321 INFO L225 Difference]: With dead ends: 55 [2024-11-19 06:30:36,321 INFO L226 Difference]: Without dead ends: 55 [2024-11-19 06:30:36,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:30:36,322 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:36,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 96 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-19 06:30:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2024-11-19 06:30:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 42 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) [2024-11-19 06:30:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-19 06:30:36,327 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 15 [2024-11-19 06:30:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:36,327 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-19 06:30:36,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-19 06:30:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 06:30:36,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:36,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:36,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:30:36,329 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:36,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1547158206, now seen corresponding path program 1 times [2024-11-19 06:30:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:36,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797136574] [2024-11-19 06:30:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:36,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797136574] [2024-11-19 06:30:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797136574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:30:36,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:30:36,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:30:36,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339438214] [2024-11-19 06:30:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:30:36,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:30:36,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:36,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:30:36,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:36,395 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-19 06:30:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:36,410 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-19 06:30:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:30:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-19 06:30:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:36,411 INFO L225 Difference]: With dead ends: 42 [2024-11-19 06:30:36,411 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 06:30:36,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:30:36,412 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:36,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 38 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:30:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 06:30:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-19 06:30:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1923076923076923) 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) [2024-11-19 06:30:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-19 06:30:36,415 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-11-19 06:30:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:36,415 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-19 06:30:36,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-19 06:30:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-19 06:30:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:30:36,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:36,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:36,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:30:36,416 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:36,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1398635613, now seen corresponding path program 1 times [2024-11-19 06:30:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:36,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432814289] [2024-11-19 06:30:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:36,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:36,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432814289] [2024-11-19 06:30:36,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432814289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160559246] [2024-11-19 06:30:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:30:36,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:36,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:36,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:30:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:36,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 06:30:36,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:37,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:37,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:30:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160559246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:37,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:37,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 06:30:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008064149] [2024-11-19 06:30:37,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:37,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:30:37,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:30:37,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:30:37,188 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:37,307 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-19 06:30:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:30:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 06:30:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:37,308 INFO L225 Difference]: With dead ends: 38 [2024-11-19 06:30:37,308 INFO L226 Difference]: Without dead ends: 34 [2024-11-19 06:30:37,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:30:37,309 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:37,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 122 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-19 06:30:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2024-11-19 06:30:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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) [2024-11-19 06:30:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-19 06:30:37,312 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2024-11-19 06:30:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:37,312 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-19 06:30:37,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-19 06:30:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 06:30:37,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:37,313 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:37,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:37,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 06:30:37,514 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:37,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2060410473, now seen corresponding path program 2 times [2024-11-19 06:30:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640786335] [2024-11-19 06:30:37,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:30:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:37,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:30:37,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:38,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640786335] [2024-11-19 06:30:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640786335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920552273] [2024-11-19 06:30:38,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:30:38,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:38,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:38,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:30:38,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:30:38,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:38,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 06:30:38,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:38,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:38,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:38,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:38,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:38,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920552273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:38,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:38,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 25 [2024-11-19 06:30:38,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19106355] [2024-11-19 06:30:38,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:38,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:30:38,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:38,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:30:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:30:38,420 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 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) [2024-11-19 06:30:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:38,708 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2024-11-19 06:30:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:30:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 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) Word has length 25 [2024-11-19 06:30:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:38,710 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:30:38,710 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 06:30:38,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:30:38,713 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:38,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 131 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:30:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 06:30:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-19 06:30:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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) [2024-11-19 06:30:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-19 06:30:38,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2024-11-19 06:30:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:38,716 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-19 06:30:38,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 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) [2024-11-19 06:30:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-19 06:30:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:30:38,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:38,716 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:38,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 06:30:38,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:38,918 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:38,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash -120190092, now seen corresponding path program 3 times [2024-11-19 06:30:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704752044] [2024-11-19 06:30:38,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:30:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:38,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:30:38,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:39,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:39,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704752044] [2024-11-19 06:30:39,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704752044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:39,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858824739] [2024-11-19 06:30:39,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:30:39,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:39,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:39,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:39,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:30:39,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:30:39,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:39,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 06:30:39,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:39,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:39,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-19 06:30:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:39,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858824739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:39,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:39,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-19 06:30:39,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177029486] [2024-11-19 06:30:39,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:39,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:30:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:30:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:30:39,538 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 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) [2024-11-19 06:30:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:39,691 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-11-19 06:30:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:30:39,692 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 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 29 [2024-11-19 06:30:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:39,692 INFO L225 Difference]: With dead ends: 41 [2024-11-19 06:30:39,692 INFO L226 Difference]: Without dead ends: 41 [2024-11-19 06:30:39,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:30:39,693 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:39,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 137 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-19 06:30:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-19 06:30:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 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) [2024-11-19 06:30:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-19 06:30:39,698 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 29 [2024-11-19 06:30:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:39,698 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-19 06:30:39,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 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) [2024-11-19 06:30:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-19 06:30:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:30:39,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:39,700 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:39,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:30:39,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 06:30:39,905 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:39,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 945375400, now seen corresponding path program 4 times [2024-11-19 06:30:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:39,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498370300] [2024-11-19 06:30:39,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:30:39,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:39,934 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:30:39,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:40,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498370300] [2024-11-19 06:30:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498370300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640958293] [2024-11-19 06:30:40,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:30:40,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:40,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:40,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:40,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:30:40,388 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:30:40,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:40,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 06:30:40,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:40,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:40,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:40,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:40,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640958293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:40,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:40,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-11-19 06:30:40,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798084322] [2024-11-19 06:30:40,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:40,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:30:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:40,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:30:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:30:40,669 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) [2024-11-19 06:30:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:40,904 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-19 06:30:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 06:30:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) Word has length 35 [2024-11-19 06:30:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:40,905 INFO L225 Difference]: With dead ends: 61 [2024-11-19 06:30:40,906 INFO L226 Difference]: Without dead ends: 43 [2024-11-19 06:30:40,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:30:40,906 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:40,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 116 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:30:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-19 06:30:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-19 06:30:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 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) [2024-11-19 06:30:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-19 06:30:40,913 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2024-11-19 06:30:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:40,913 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-19 06:30:40,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) [2024-11-19 06:30:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-19 06:30:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:30:40,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:40,914 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:40,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:30:41,114 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,SelfDestructingSolverStorable16 [2024-11-19 06:30:41,115 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:41,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2021507653, now seen corresponding path program 5 times [2024-11-19 06:30:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:41,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260575789] [2024-11-19 06:30:41,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:30:41,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:41,147 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 06:30:41,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:41,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:41,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260575789] [2024-11-19 06:30:41,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260575789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:41,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41820555] [2024-11-19 06:30:41,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:30:41,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:41,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:41,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:30:41,458 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 06:30:41,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:41,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 06:30:41,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:41,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:30:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:41,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:41,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41820555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:41,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:41,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-19 06:30:41,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077993716] [2024-11-19 06:30:41,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:41,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 06:30:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 06:30:41,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:30:41,807 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 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) [2024-11-19 06:30:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:41,958 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2024-11-19 06:30:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:30:41,958 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 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 39 [2024-11-19 06:30:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:41,959 INFO L225 Difference]: With dead ends: 51 [2024-11-19 06:30:41,959 INFO L226 Difference]: Without dead ends: 51 [2024-11-19 06:30:41,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:30:41,960 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:41,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 165 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-19 06:30:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-19 06:30:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 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) [2024-11-19 06:30:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2024-11-19 06:30:41,962 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 39 [2024-11-19 06:30:41,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:41,963 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2024-11-19 06:30:41,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 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) [2024-11-19 06:30:41,963 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2024-11-19 06:30:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 06:30:41,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:41,964 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:41,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:42,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 06:30:42,165 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:42,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash -53027143, now seen corresponding path program 6 times [2024-11-19 06:30:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:42,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285241045] [2024-11-19 06:30:42,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:30:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:42,205 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 06:30:42,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:42,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285241045] [2024-11-19 06:30:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285241045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:42,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175126678] [2024-11-19 06:30:42,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:30:42,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:42,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:42,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:30:42,932 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 06:30:42,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:42,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 06:30:42,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:43,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:43,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:43,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:43,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:43,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175126678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:43,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:43,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-19 06:30:43,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172880841] [2024-11-19 06:30:43,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:43,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:30:43,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:30:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:30:43,260 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 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) [2024-11-19 06:30:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:43,485 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2024-11-19 06:30:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:30:43,485 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 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 45 [2024-11-19 06:30:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:43,486 INFO L225 Difference]: With dead ends: 77 [2024-11-19 06:30:43,486 INFO L226 Difference]: Without dead ends: 53 [2024-11-19 06:30:43,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2024-11-19 06:30:43,487 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:43,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 232 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:30:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-19 06:30:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2024-11-19 06:30:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 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) [2024-11-19 06:30:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-19 06:30:43,490 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2024-11-19 06:30:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:43,490 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-19 06:30:43,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 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) [2024-11-19 06:30:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-19 06:30:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 06:30:43,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:43,491 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:43,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:43,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:43,693 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:43,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -927352810, now seen corresponding path program 7 times [2024-11-19 06:30:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788928725] [2024-11-19 06:30:43,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:30:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:44,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:44,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788928725] [2024-11-19 06:30:44,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788928725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:44,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745458219] [2024-11-19 06:30:44,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:30:44,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:44,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:44,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:44,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:30:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:44,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 06:30:44,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:44,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:44,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:30:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745458219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:44,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 27 [2024-11-19 06:30:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469553140] [2024-11-19 06:30:44,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:44,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:30:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:30:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:30:44,631 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 28 states, 27 states have (on average 3.814814814814815) internal successors, (103), 28 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) [2024-11-19 06:30:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:44,893 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-19 06:30:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 06:30:44,894 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.814814814814815) internal successors, (103), 28 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) Word has length 49 [2024-11-19 06:30:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:44,895 INFO L225 Difference]: With dead ends: 61 [2024-11-19 06:30:44,895 INFO L226 Difference]: Without dead ends: 61 [2024-11-19 06:30:44,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:30:44,896 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:44,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 320 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:30:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-19 06:30:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2024-11-19 06:30:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 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) [2024-11-19 06:30:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-11-19 06:30:44,898 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 49 [2024-11-19 06:30:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:44,898 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-11-19 06:30:44,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.814814814814815) internal successors, (103), 28 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) [2024-11-19 06:30:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-11-19 06:30:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:30:44,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:44,899 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:44,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:30:45,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:45,104 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:45,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2071819210, now seen corresponding path program 8 times [2024-11-19 06:30:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619864203] [2024-11-19 06:30:45,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:30:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:45,128 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:30:45,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:45,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619864203] [2024-11-19 06:30:45,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619864203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086693617] [2024-11-19 06:30:45,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:30:45,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:45,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:45,710 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:45,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:30:45,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:30:45,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:45,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-19 06:30:45,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:45,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:46,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:46,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:46,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:46,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086693617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:46,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:46,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-11-19 06:30:46,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991261752] [2024-11-19 06:30:46,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:46,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:30:46,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:30:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:30:46,203 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 28 states have internal predecessors, (87), 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) [2024-11-19 06:30:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:46,584 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2024-11-19 06:30:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:30:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 28 states have internal predecessors, (87), 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 [2024-11-19 06:30:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:46,585 INFO L225 Difference]: With dead ends: 93 [2024-11-19 06:30:46,585 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 06:30:46,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 06:30:46,586 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:46,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 382 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:30:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 06:30:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-19 06:30:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-19 06:30:46,588 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 55 [2024-11-19 06:30:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:46,588 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-19 06:30:46,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 28 states have internal predecessors, (87), 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) [2024-11-19 06:30:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-19 06:30:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 06:30:46,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:46,589 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:46,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:46,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:46,790 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:46,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1199176935, now seen corresponding path program 9 times [2024-11-19 06:30:46,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:46,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116901845] [2024-11-19 06:30:46,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:30:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:46,811 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 06:30:46,811 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116901845] [2024-11-19 06:30:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116901845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85345343] [2024-11-19 06:30:47,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:30:47,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:47,249 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:47,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:30:47,345 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 06:30:47,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:47,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 06:30:47,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:47,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:47,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-19 06:30:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85345343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:48,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-19 06:30:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173848471] [2024-11-19 06:30:48,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:48,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 06:30:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 06:30:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2024-11-19 06:30:48,046 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 32 states, 31 states have (on average 3.967741935483871) internal successors, (123), 32 states have internal predecessors, (123), 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) [2024-11-19 06:30:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:48,244 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-11-19 06:30:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:30:48,244 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.967741935483871) internal successors, (123), 32 states have internal predecessors, (123), 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 [2024-11-19 06:30:48,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:48,245 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:30:48,245 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:30:48,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:30:48,246 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:48,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 205 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:30:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:30:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-19 06:30:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 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) [2024-11-19 06:30:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-11-19 06:30:48,248 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 59 [2024-11-19 06:30:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:48,248 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-11-19 06:30:48,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.967741935483871) internal successors, (123), 32 states have internal predecessors, (123), 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) [2024-11-19 06:30:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-11-19 06:30:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 06:30:48,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:48,249 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:48,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:48,449 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,SelfDestructingSolverStorable21 [2024-11-19 06:30:48,449 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:48,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1106319323, now seen corresponding path program 10 times [2024-11-19 06:30:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139305520] [2024-11-19 06:30:48,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:30:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:48,471 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:30:48,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:48,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:48,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139305520] [2024-11-19 06:30:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139305520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:48,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605444464] [2024-11-19 06:30:48,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:30:48,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:48,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:48,872 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:48,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:30:48,986 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:30:48,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:48,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-19 06:30:48,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:49,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:49,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:49,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:49,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605444464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:49,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-11-19 06:30:49,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320284912] [2024-11-19 06:30:49,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:49,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 06:30:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 06:30:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:30:49,229 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 22 states have internal predecessors, (74), 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) [2024-11-19 06:30:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:49,614 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2024-11-19 06:30:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 06:30:49,615 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-19 06:30:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:49,615 INFO L225 Difference]: With dead ends: 109 [2024-11-19 06:30:49,615 INFO L226 Difference]: Without dead ends: 73 [2024-11-19 06:30:49,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:30:49,616 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:49,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 415 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:30:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-19 06:30:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2024-11-19 06:30:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 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) [2024-11-19 06:30:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-11-19 06:30:49,618 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 65 [2024-11-19 06:30:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:49,618 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-11-19 06:30:49,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 22 states have internal predecessors, (74), 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) [2024-11-19 06:30:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-11-19 06:30:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 06:30:49,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:49,619 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:49,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:49,823 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,SelfDestructingSolverStorable22 [2024-11-19 06:30:49,824 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:49,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2072076104, now seen corresponding path program 11 times [2024-11-19 06:30:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:49,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786630873] [2024-11-19 06:30:49,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:30:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:49,840 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-19 06:30:49,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 45 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:50,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786630873] [2024-11-19 06:30:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786630873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086212608] [2024-11-19 06:30:50,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:30:50,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:50,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:50,214 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:50,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:30:50,307 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-19 06:30:50,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:50,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-19 06:30:50,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:50,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:30:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 45 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:50,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 45 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:51,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086212608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:51,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:51,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 40 [2024-11-19 06:30:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335265100] [2024-11-19 06:30:51,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:51,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 06:30:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 06:30:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 06:30:51,421 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 41 states, 40 states have (on average 4.2) internal successors, (168), 41 states have internal predecessors, (168), 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) [2024-11-19 06:30:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:51,805 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2024-11-19 06:30:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:30:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.2) internal successors, (168), 41 states have internal predecessors, (168), 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 69 [2024-11-19 06:30:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:51,806 INFO L225 Difference]: With dead ends: 81 [2024-11-19 06:30:51,807 INFO L226 Difference]: Without dead ends: 81 [2024-11-19 06:30:51,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:30:51,808 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:51,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 581 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:30:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-19 06:30:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2024-11-19 06:30:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-19 06:30:51,810 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 69 [2024-11-19 06:30:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:51,810 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-19 06:30:51,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.2) internal successors, (168), 41 states have internal predecessors, (168), 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) [2024-11-19 06:30:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-19 06:30:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 06:30:51,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:51,811 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:51,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:52,015 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,SelfDestructingSolverStorable23 [2024-11-19 06:30:52,016 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:52,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1940249324, now seen corresponding path program 12 times [2024-11-19 06:30:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967690933] [2024-11-19 06:30:52,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:30:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:52,043 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-19 06:30:52,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967690933] [2024-11-19 06:30:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967690933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138941552] [2024-11-19 06:30:52,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:30:52,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:52,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:52,698 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:52,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:30:52,852 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-19 06:30:52,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:52,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-19 06:30:52,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:53,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:53,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:53,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:53,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:53,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138941552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:53,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 36 [2024-11-19 06:30:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239756757] [2024-11-19 06:30:53,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:53,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-19 06:30:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-19 06:30:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:30:53,404 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:53,993 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2024-11-19 06:30:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 06:30:53,993 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-19 06:30:53,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:53,994 INFO L225 Difference]: With dead ends: 125 [2024-11-19 06:30:53,994 INFO L226 Difference]: Without dead ends: 83 [2024-11-19 06:30:53,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:30:53,995 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:53,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 645 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:30:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-19 06:30:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2024-11-19 06:30:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 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) [2024-11-19 06:30:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-11-19 06:30:53,998 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 75 [2024-11-19 06:30:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:53,998 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-11-19 06:30:53,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:30:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-11-19 06:30:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-19 06:30:53,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:53,999 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:54,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:30:54,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 06:30:54,204 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:54,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1302875255, now seen corresponding path program 13 times [2024-11-19 06:30:54,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:54,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215054794] [2024-11-19 06:30:54,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:30:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 45 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215054794] [2024-11-19 06:30:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215054794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852183242] [2024-11-19 06:30:55,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:30:55,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:55,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:55,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:30:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:30:55,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-19 06:30:55,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:55,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:56,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:30:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852183242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:56,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 39 [2024-11-19 06:30:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687574748] [2024-11-19 06:30:56,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:56,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-19 06:30:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-19 06:30:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 06:30:56,193 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 40 states, 39 states have (on average 4.17948717948718) internal successors, (163), 40 states have internal predecessors, (163), 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) [2024-11-19 06:30:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:56,609 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-11-19 06:30:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:30:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.17948717948718) internal successors, (163), 40 states have internal predecessors, (163), 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 79 [2024-11-19 06:30:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:56,614 INFO L225 Difference]: With dead ends: 91 [2024-11-19 06:30:56,614 INFO L226 Difference]: Without dead ends: 91 [2024-11-19 06:30:56,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 128 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 06:30:56,615 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:56,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 645 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:30:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-19 06:30:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2024-11-19 06:30:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 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) [2024-11-19 06:30:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2024-11-19 06:30:56,621 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 79 [2024-11-19 06:30:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:56,621 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2024-11-19 06:30:56,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.17948717948718) internal successors, (163), 40 states have internal predecessors, (163), 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) [2024-11-19 06:30:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2024-11-19 06:30:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 06:30:56,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:56,622 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:56,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 06:30:56,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:56,823 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:56,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2061487357, now seen corresponding path program 14 times [2024-11-19 06:30:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437560557] [2024-11-19 06:30:56,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:30:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:56,849 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:30:56,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 29 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:57,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:30:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437560557] [2024-11-19 06:30:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437560557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:30:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593398108] [2024-11-19 06:30:57,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:30:57,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:30:57,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:30:57,744 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:30:57,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:30:57,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:30:57,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:30:57,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-19 06:30:57,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:30:58,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:30:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 29 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:58,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:30:58,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:30:58,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:30:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 29 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:30:58,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593398108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:30:58,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:30:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2024-11-19 06:30:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947639363] [2024-11-19 06:30:58,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:30:58,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 06:30:58,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:30:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 06:30:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:30:58,409 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 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) [2024-11-19 06:30:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:30:59,192 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2024-11-19 06:30:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 06:30:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 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 85 [2024-11-19 06:30:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:30:59,193 INFO L225 Difference]: With dead ends: 141 [2024-11-19 06:30:59,194 INFO L226 Difference]: Without dead ends: 93 [2024-11-19 06:30:59,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=1925, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 06:30:59,195 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 25 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:30:59,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 832 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:30:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-19 06:30:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-11-19 06:30:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 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) [2024-11-19 06:30:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2024-11-19 06:30:59,197 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 85 [2024-11-19 06:30:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:30:59,197 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2024-11-19 06:30:59,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 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) [2024-11-19 06:30:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2024-11-19 06:30:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-19 06:30:59,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:30:59,198 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:30:59,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 06:30:59,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 06:30:59,403 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:30:59,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:30:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash 392512858, now seen corresponding path program 15 times [2024-11-19 06:30:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:30:59,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434430540] [2024-11-19 06:30:59,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:30:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:30:59,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-19 06:30:59,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 66 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:00,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:00,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434430540] [2024-11-19 06:31:00,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434430540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:00,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47446004] [2024-11-19 06:31:00,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:00,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:00,255 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:00,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 06:31:00,422 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-19 06:31:00,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:00,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-19 06:31:00,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 91 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:00,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:01,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-19 06:31:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 91 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:01,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47446004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:01,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:01,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2024-11-19 06:31:01,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001427023] [2024-11-19 06:31:01,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:01,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 06:31:01,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 06:31:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1600, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:31:01,243 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 44 states, 43 states have (on average 4.255813953488372) internal successors, (183), 44 states have internal predecessors, (183), 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) [2024-11-19 06:31:01,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:01,579 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2024-11-19 06:31:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 06:31:01,579 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.255813953488372) internal successors, (183), 44 states have internal predecessors, (183), 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 89 [2024-11-19 06:31:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:01,580 INFO L225 Difference]: With dead ends: 101 [2024-11-19 06:31:01,580 INFO L226 Difference]: Without dead ends: 101 [2024-11-19 06:31:01,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 146 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=430, Invalid=2222, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 06:31:01,581 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:01,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 202 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:31:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-19 06:31:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2024-11-19 06:31:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 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) [2024-11-19 06:31:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-19 06:31:01,584 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 89 [2024-11-19 06:31:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:01,584 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-19 06:31:01,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.255813953488372) internal successors, (183), 44 states have internal predecessors, (183), 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) [2024-11-19 06:31:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-19 06:31:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-19 06:31:01,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:01,585 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:01,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:01,789 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,SelfDestructingSolverStorable27 [2024-11-19 06:31:01,790 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:01,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1179451890, now seen corresponding path program 16 times [2024-11-19 06:31:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:01,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964010549] [2024-11-19 06:31:01,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:31:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:01,821 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:31:01,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 33 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:02,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964010549] [2024-11-19 06:31:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964010549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145581543] [2024-11-19 06:31:02,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:31:02,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:02,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:02,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:02,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 06:31:02,913 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:31:02,913 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:02,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-19 06:31:02,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:02,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:31:03,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 06:31:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 33 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:03,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:03,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:31:03,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:31:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 33 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:03,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145581543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:03,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:03,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-11-19 06:31:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105301573] [2024-11-19 06:31:03,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:03,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:31:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:31:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:31:03,263 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 28 states have internal predecessors, (104), 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) [2024-11-19 06:31:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:03,999 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2024-11-19 06:31:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 06:31:03,999 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 28 states have internal predecessors, (104), 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 [2024-11-19 06:31:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:04,000 INFO L225 Difference]: With dead ends: 157 [2024-11-19 06:31:04,000 INFO L226 Difference]: Without dead ends: 103 [2024-11-19 06:31:04,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:31:04,002 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:04,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 772 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:31:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-19 06:31:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2024-11-19 06:31:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 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) [2024-11-19 06:31:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2024-11-19 06:31:04,007 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 95 [2024-11-19 06:31:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:04,007 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-11-19 06:31:04,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 28 states have internal predecessors, (104), 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) [2024-11-19 06:31:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2024-11-19 06:31:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-19 06:31:04,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:04,008 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:04,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 06:31:04,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:31:04,210 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:04,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2128045611, now seen corresponding path program 17 times [2024-11-19 06:31:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:04,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626067155] [2024-11-19 06:31:04,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:31:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:04,268 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-19 06:31:04,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 122 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626067155] [2024-11-19 06:31:05,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626067155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188444402] [2024-11-19 06:31:05,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:31:05,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:05,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:05,749 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:05,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 06:31:05,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-19 06:31:05,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:05,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-19 06:31:05,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:05,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:31:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:06,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188444402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:07,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 56 [2024-11-19 06:31:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258762877] [2024-11-19 06:31:07,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:07,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-19 06:31:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-19 06:31:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2725, Unknown=0, NotChecked=0, Total=3192 [2024-11-19 06:31:07,566 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 57 states, 56 states have (on average 4.321428571428571) internal successors, (242), 57 states have internal predecessors, (242), 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) [2024-11-19 06:31:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:08,128 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2024-11-19 06:31:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 06:31:08,129 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.321428571428571) internal successors, (242), 57 states have internal predecessors, (242), 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 99 [2024-11-19 06:31:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:08,129 INFO L225 Difference]: With dead ends: 111 [2024-11-19 06:31:08,130 INFO L226 Difference]: Without dead ends: 111 [2024-11-19 06:31:08,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=500, Invalid=2806, Unknown=0, NotChecked=0, Total=3306 [2024-11-19 06:31:08,131 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:08,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 788 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:31:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-19 06:31:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2024-11-19 06:31:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 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) [2024-11-19 06:31:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2024-11-19 06:31:08,138 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 99 [2024-11-19 06:31:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:08,138 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2024-11-19 06:31:08,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.321428571428571) internal successors, (242), 57 states have internal predecessors, (242), 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) [2024-11-19 06:31:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2024-11-19 06:31:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-19 06:31:08,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:08,139 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:08,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 06:31:08,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:08,340 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:08,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 990084639, now seen corresponding path program 18 times [2024-11-19 06:31:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934650624] [2024-11-19 06:31:08,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:31:08,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:08,406 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-19 06:31:08,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 37 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:09,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934650624] [2024-11-19 06:31:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934650624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031465505] [2024-11-19 06:31:09,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:31:09,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:09,451 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:09,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 06:31:09,647 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-19 06:31:09,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:09,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-19 06:31:09,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:09,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:31:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 37 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:10,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:10,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:31:10,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:31:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 37 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:10,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031465505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:10,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 43 [2024-11-19 06:31:10,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130363884] [2024-11-19 06:31:10,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:10,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 06:31:10,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:10,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 06:31:10,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 06:31:10,247 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 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) [2024-11-19 06:31:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:11,280 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2024-11-19 06:31:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-19 06:31:11,281 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 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 105 [2024-11-19 06:31:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:11,281 INFO L225 Difference]: With dead ends: 173 [2024-11-19 06:31:11,281 INFO L226 Difference]: Without dead ends: 113 [2024-11-19 06:31:11,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=2693, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 06:31:11,282 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 29 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:11,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1272 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 06:31:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-19 06:31:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2024-11-19 06:31:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 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) [2024-11-19 06:31:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2024-11-19 06:31:11,284 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 105 [2024-11-19 06:31:11,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:11,285 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2024-11-19 06:31:11,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 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) [2024-11-19 06:31:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2024-11-19 06:31:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-19 06:31:11,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:11,285 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:11,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 06:31:11,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:11,490 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:11,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1448204804, now seen corresponding path program 19 times [2024-11-19 06:31:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115820224] [2024-11-19 06:31:11,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:31:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 120 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115820224] [2024-11-19 06:31:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115820224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886778591] [2024-11-19 06:31:12,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:31:12,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:12,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:12,704 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:12,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 06:31:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:12,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-19 06:31:12,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 153 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:13,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:14,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:31:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 153 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886778591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:14,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:14,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 51 [2024-11-19 06:31:14,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524948340] [2024-11-19 06:31:14,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:14,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 06:31:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 06:31:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2326, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 06:31:14,292 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 52 states, 51 states have (on average 4.372549019607843) internal successors, (223), 52 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) [2024-11-19 06:31:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:15,029 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2024-11-19 06:31:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 06:31:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.372549019607843) internal successors, (223), 52 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 109 [2024-11-19 06:31:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:15,031 INFO L225 Difference]: With dead ends: 121 [2024-11-19 06:31:15,031 INFO L226 Difference]: Without dead ends: 121 [2024-11-19 06:31:15,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 179 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=349, Invalid=2407, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 06:31:15,032 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 20 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:15,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1075 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 06:31:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-19 06:31:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2024-11-19 06:31:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 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) [2024-11-19 06:31:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2024-11-19 06:31:15,035 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 109 [2024-11-19 06:31:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:15,035 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2024-11-19 06:31:15,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.372549019607843) internal successors, (223), 52 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) [2024-11-19 06:31:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2024-11-19 06:31:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-19 06:31:15,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:15,036 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:15,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:15,240 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,SelfDestructingSolverStorable31 [2024-11-19 06:31:15,241 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:15,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:15,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1669684528, now seen corresponding path program 20 times [2024-11-19 06:31:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229835479] [2024-11-19 06:31:15,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:15,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:15,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:15,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 41 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229835479] [2024-11-19 06:31:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229835479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467691186] [2024-11-19 06:31:16,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:16,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:16,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:16,764 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:16,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 06:31:16,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:16,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:16,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-19 06:31:16,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:17,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:31:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 41 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:17,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:17,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:31:17,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:31:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 41 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:17,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467691186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:17,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 46 [2024-11-19 06:31:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278663383] [2024-11-19 06:31:17,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:17,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 06:31:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 06:31:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 06:31:17,790 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 46 states, 46 states have (on average 3.717391304347826) internal successors, (171), 46 states have internal predecessors, (171), 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) [2024-11-19 06:31:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:18,724 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2024-11-19 06:31:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-19 06:31:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.717391304347826) internal successors, (171), 46 states have internal predecessors, (171), 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 115 [2024-11-19 06:31:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:18,725 INFO L225 Difference]: With dead ends: 189 [2024-11-19 06:31:18,725 INFO L226 Difference]: Without dead ends: 123 [2024-11-19 06:31:18,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=3125, Unknown=0, NotChecked=0, Total=3306 [2024-11-19 06:31:18,726 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:18,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1346 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 06:31:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-19 06:31:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2024-11-19 06:31:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 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) [2024-11-19 06:31:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-11-19 06:31:18,732 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 115 [2024-11-19 06:31:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:18,732 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-11-19 06:31:18,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.717391304347826) internal successors, (171), 46 states have internal predecessors, (171), 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) [2024-11-19 06:31:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-11-19 06:31:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-19 06:31:18,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:18,733 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:18,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 06:31:18,933 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,SelfDestructingSolverStorable32 [2024-11-19 06:31:18,934 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:18,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1078356787, now seen corresponding path program 21 times [2024-11-19 06:31:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:18,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686362560] [2024-11-19 06:31:18,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:18,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:18,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-19 06:31:18,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 153 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:20,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:20,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686362560] [2024-11-19 06:31:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686362560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:20,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423165756] [2024-11-19 06:31:20,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:20,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:20,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:20,575 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:20,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 06:31:20,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-19 06:31:20,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:20,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-19 06:31:20,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 190 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:21,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:21,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-19 06:31:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 190 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423165756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:21,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2024-11-19 06:31:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754722083] [2024-11-19 06:31:21,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:21,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-19 06:31:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-19 06:31:21,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=2679, Unknown=0, NotChecked=0, Total=3192 [2024-11-19 06:31:21,927 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 57 states, 56 states have (on average 4.446428571428571) internal successors, (249), 57 states have internal predecessors, (249), 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) [2024-11-19 06:31:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:22,439 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2024-11-19 06:31:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 06:31:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.446428571428571) internal successors, (249), 57 states have internal predecessors, (249), 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 119 [2024-11-19 06:31:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:22,440 INFO L225 Difference]: With dead ends: 131 [2024-11-19 06:31:22,440 INFO L226 Difference]: Without dead ends: 131 [2024-11-19 06:31:22,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 196 SyntacticMatches, 12 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2356 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=727, Invalid=3695, Unknown=0, NotChecked=0, Total=4422 [2024-11-19 06:31:22,442 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 111 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:22,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 394 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:31:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-19 06:31:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-11-19 06:31:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2024-11-19 06:31:22,453 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 119 [2024-11-19 06:31:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:22,456 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2024-11-19 06:31:22,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.446428571428571) internal successors, (249), 57 states have internal predecessors, (249), 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) [2024-11-19 06:31:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2024-11-19 06:31:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-19 06:31:22,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:22,457 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:22,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-19 06:31:22,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:22,658 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:22,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1564693695, now seen corresponding path program 22 times [2024-11-19 06:31:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908777112] [2024-11-19 06:31:22,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:31:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:22,709 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:31:22,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 45 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908777112] [2024-11-19 06:31:24,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908777112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883465393] [2024-11-19 06:31:24,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:31:24,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:24,348 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:24,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 06:31:24,635 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:31:24,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:24,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-19 06:31:24,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:24,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:31:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 45 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:24,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:24,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:31:24,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:31:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 45 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883465393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:24,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:24,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-11-19 06:31:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755722370] [2024-11-19 06:31:24,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:24,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 06:31:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 06:31:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 06:31:24,985 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 34 states have internal predecessors, (134), 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) [2024-11-19 06:31:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:25,958 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2024-11-19 06:31:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-19 06:31:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 34 states have internal predecessors, (134), 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 125 [2024-11-19 06:31:25,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:25,960 INFO L225 Difference]: With dead ends: 205 [2024-11-19 06:31:25,960 INFO L226 Difference]: Without dead ends: 133 [2024-11-19 06:31:25,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=1945, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 06:31:25,961 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 27 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:25,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1438 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 06:31:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-19 06:31:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2024-11-19 06:31:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 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) [2024-11-19 06:31:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2024-11-19 06:31:25,973 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 125 [2024-11-19 06:31:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:25,973 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2024-11-19 06:31:25,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 34 states have internal predecessors, (134), 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) [2024-11-19 06:31:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2024-11-19 06:31:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 06:31:25,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:25,974 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:25,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:26,175 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1063664994, now seen corresponding path program 23 times [2024-11-19 06:31:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:26,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328374873] [2024-11-19 06:31:26,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:31:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:26,207 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-19 06:31:26,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 231 proven. 453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328374873] [2024-11-19 06:31:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328374873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630473478] [2024-11-19 06:31:27,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:31:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:27,635 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:27,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-19 06:31:27,864 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-19 06:31:27,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:27,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-19 06:31:27,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:27,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:31:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 231 proven. 453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:28,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 231 proven. 453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:30,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630473478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:30,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:30,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 70 [2024-11-19 06:31:30,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721803633] [2024-11-19 06:31:30,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:30,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-19 06:31:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-19 06:31:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=4249, Unknown=0, NotChecked=0, Total=4970 [2024-11-19 06:31:30,284 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 71 states, 70 states have (on average 4.485714285714286) internal successors, (314), 71 states have internal predecessors, (314), 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) [2024-11-19 06:31:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:31,085 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2024-11-19 06:31:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 06:31:31,086 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 4.485714285714286) internal successors, (314), 71 states have internal predecessors, (314), 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 129 [2024-11-19 06:31:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:31,087 INFO L225 Difference]: With dead ends: 141 [2024-11-19 06:31:31,087 INFO L226 Difference]: Without dead ends: 141 [2024-11-19 06:31:31,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=762, Invalid=4350, Unknown=0, NotChecked=0, Total=5112 [2024-11-19 06:31:31,088 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:31,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1150 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 06:31:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-19 06:31:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2024-11-19 06:31:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 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) [2024-11-19 06:31:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-11-19 06:31:31,095 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 129 [2024-11-19 06:31:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:31,095 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-11-19 06:31:31,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 4.485714285714286) internal successors, (314), 71 states have internal predecessors, (314), 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) [2024-11-19 06:31:31,096 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-11-19 06:31:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 06:31:31,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:31,099 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:31,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:31,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-19 06:31:31,300 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:31,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:31,300 INFO L85 PathProgramCache]: Analyzing trace with hash 603813970, now seen corresponding path program 24 times [2024-11-19 06:31:31,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:31,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371593896] [2024-11-19 06:31:31,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:31:31,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:31,411 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-19 06:31:31,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 190 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:32,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371593896] [2024-11-19 06:31:32,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371593896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479075884] [2024-11-19 06:31:32,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:31:32,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:32,925 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:32,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-19 06:31:33,220 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-19 06:31:33,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:33,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-19 06:31:33,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:33,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:31:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 49 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:34,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:34,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:31:34,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:31:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 49 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479075884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:34,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 67 [2024-11-19 06:31:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721368095] [2024-11-19 06:31:34,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:34,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-19 06:31:34,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-19 06:31:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=4102, Unknown=0, NotChecked=0, Total=4422 [2024-11-19 06:31:34,635 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 67 states, 67 states have (on average 4.059701492537314) internal successors, (272), 67 states have internal predecessors, (272), 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) [2024-11-19 06:31:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:37,450 INFO L93 Difference]: Finished difference Result 232 states and 233 transitions. [2024-11-19 06:31:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-19 06:31:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.059701492537314) internal successors, (272), 67 states have internal predecessors, (272), 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 135 [2024-11-19 06:31:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:37,452 INFO L225 Difference]: With dead ends: 232 [2024-11-19 06:31:37,452 INFO L226 Difference]: Without dead ends: 154 [2024-11-19 06:31:37,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1211, Invalid=14289, Unknown=0, NotChecked=0, Total=15500 [2024-11-19 06:31:37,455 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 231 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:37,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 2113 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 06:31:37,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-19 06:31:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2024-11-19 06:31:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.013793103448276) internal successors, (147), 145 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) [2024-11-19 06:31:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2024-11-19 06:31:37,457 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 135 [2024-11-19 06:31:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:37,457 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2024-11-19 06:31:37,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.059701492537314) internal successors, (272), 67 states have internal predecessors, (272), 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) [2024-11-19 06:31:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2024-11-19 06:31:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-19 06:31:37,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:37,459 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:37,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-19 06:31:37,659 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,SelfDestructingSolverStorable36 [2024-11-19 06:31:37,660 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:37,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2137773155, now seen corresponding path program 25 times [2024-11-19 06:31:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586752933] [2024-11-19 06:31:37,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:31:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 53 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586752933] [2024-11-19 06:31:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586752933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185998600] [2024-11-19 06:31:39,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:31:39,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:39,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:39,562 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:39,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-19 06:31:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:39,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-19 06:31:39,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:40,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:31:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 53 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:40,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:40,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:31:40,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:31:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 53 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185998600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:40,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 55 [2024-11-19 06:31:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236417077] [2024-11-19 06:31:40,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:40,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-19 06:31:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-19 06:31:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2831, Unknown=0, NotChecked=0, Total=2970 [2024-11-19 06:31:40,846 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 55 states have internal predecessors, (213), 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) [2024-11-19 06:31:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:42,311 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2024-11-19 06:31:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-19 06:31:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 55 states have internal predecessors, (213), 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 145 [2024-11-19 06:31:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:42,312 INFO L225 Difference]: With dead ends: 237 [2024-11-19 06:31:42,312 INFO L226 Difference]: Without dead ends: 153 [2024-11-19 06:31:42,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=217, Invalid=4613, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 06:31:42,312 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 37 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 3458 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:42,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2170 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3458 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 06:31:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-19 06:31:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2024-11-19 06:31:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 149 states have internal predecessors, (151), 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) [2024-11-19 06:31:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2024-11-19 06:31:42,314 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 145 [2024-11-19 06:31:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:42,315 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2024-11-19 06:31:42,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 55 states have internal predecessors, (213), 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) [2024-11-19 06:31:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2024-11-19 06:31:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-19 06:31:42,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:42,315 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:42,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-19 06:31:42,519 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,SelfDestructingSolverStorable37 [2024-11-19 06:31:42,520 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:42,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1583913792, now seen corresponding path program 26 times [2024-11-19 06:31:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575404090] [2024-11-19 06:31:42,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:42,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:42,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:42,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 276 proven. 662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:44,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:44,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575404090] [2024-11-19 06:31:44,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575404090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153970579] [2024-11-19 06:31:44,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:44,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:44,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:44,302 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) [2024-11-19 06:31:44,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-19 06:31:44,494 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:44,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:44,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-19 06:31:44,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 325 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:45,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:46,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-19 06:31:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 325 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:47,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153970579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:47,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:47,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 80 [2024-11-19 06:31:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567607880] [2024-11-19 06:31:47,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:47,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-19 06:31:47,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-19 06:31:47,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=5604, Unknown=0, NotChecked=0, Total=6480 [2024-11-19 06:31:47,259 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand has 81 states, 80 states have (on average 4.525) internal successors, (362), 81 states have internal predecessors, (362), 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) [2024-11-19 06:31:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:48,446 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2024-11-19 06:31:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 06:31:48,447 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 4.525) internal successors, (362), 81 states have internal predecessors, (362), 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 149 [2024-11-19 06:31:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:48,447 INFO L225 Difference]: With dead ends: 161 [2024-11-19 06:31:48,447 INFO L226 Difference]: Without dead ends: 161 [2024-11-19 06:31:48,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2408 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=922, Invalid=5720, Unknown=0, NotChecked=0, Total=6642 [2024-11-19 06:31:48,449 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 17 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:48,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1741 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 06:31:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-19 06:31:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2024-11-19 06:31:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 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) [2024-11-19 06:31:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2024-11-19 06:31:48,454 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 149 [2024-11-19 06:31:48,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:48,454 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2024-11-19 06:31:48,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 4.525) internal successors, (362), 81 states have internal predecessors, (362), 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) [2024-11-19 06:31:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2024-11-19 06:31:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-19 06:31:48,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:48,455 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:48,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-19 06:31:48,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-19 06:31:48,660 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-19 06:31:48,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1794887540, now seen corresponding path program 27 times [2024-11-19 06:31:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594814834] [2024-11-19 06:31:48,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:48,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-19 06:31:48,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 57 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:50,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594814834] [2024-11-19 06:31:50,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594814834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:50,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206211599] [2024-11-19 06:31:50,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:50,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:50,584 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) [2024-11-19 06:31:50,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-19 06:31:51,170 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-19 06:31:51,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:51,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-19 06:31:51,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:51,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:31:51,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10