./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/sll2n_update_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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/list-simple/sll2n_update_all.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 1fd0aba5d9be2820550e57012fb4e12f76fe291bb253443319d08539e5b2ba1a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:49:09,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:49:09,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:49:09,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:49:09,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:49:09,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:49:09,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:49:09,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:49:09,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:49:09,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:49:09,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:49:09,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:49:09,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:49:09,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:49:09,874 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:49:09,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:49:09,874 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:49:09,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:49:09,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:49:09,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:49:09,875 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:49:09,877 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:49:09,877 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:49:09,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:49:09,877 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:49:09,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:49:09,878 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:49:09,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:49:09,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:49:09,878 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:49:09,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:49:09,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:49:09,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:49:09,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:49:09,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:49:09,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:49:09,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:49:09,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:49:09,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:49:09,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:49:09,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:49:09,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:49:09,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fd0aba5d9be2820550e57012fb4e12f76fe291bb253443319d08539e5b2ba1a [2024-11-17 00:49:10,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:49:10,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:49:10,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:49:10,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:49:10,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:49:10,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_update_all.i [2024-11-17 00:49:11,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:49:11,616 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:49:11,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_update_all.i [2024-11-17 00:49:11,632 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5099b6d/9a2500cfb272439aa832a70b000c3195/FLAGa8efb3142 [2024-11-17 00:49:11,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5099b6d/9a2500cfb272439aa832a70b000c3195 [2024-11-17 00:49:11,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:49:11,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:49:11,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:49:11,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:49:11,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:49:11,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:11,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7db7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11, skipping insertion in model container [2024-11-17 00:49:11,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:11,693 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:49:11,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:49:11,936 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:49:11,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:49:11,999 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:49:12,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11 WrapperNode [2024-11-17 00:49:12,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:49:12,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:49:12,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:49:12,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:49:12,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,038 INFO L138 Inliner]: procedures = 126, calls = 23, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 121 [2024-11-17 00:49:12,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:49:12,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:49:12,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:49:12,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:49:12,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,064 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-17 00:49:12,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:49:12,075 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:49:12,075 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:49:12,075 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:49:12,076 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (1/1) ... [2024-11-17 00:49:12,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:49:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:12,104 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) [2024-11-17 00:49:12,139 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 [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:49:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:49:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 00:49:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:49:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 00:49:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:49:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:49:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:49:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:49:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:49:12,351 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:49:12,352 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:49:12,546 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint myexit_returnLabel#1: assume true;havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2024-11-17 00:49:12,547 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L604: havoc sll_get_data_at_#t~mem9#1; [2024-11-17 00:49:12,562 INFO L? ?]: Removed 82 outVars from TransFormulas that were not future-live. [2024-11-17 00:49:12,563 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:49:12,578 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:49:12,579 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:49:12,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:49:12 BoogieIcfgContainer [2024-11-17 00:49:12,580 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:49:12,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:49:12,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:49:12,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:49:12,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:49:11" (1/3) ... [2024-11-17 00:49:12,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4bbc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:49:12, skipping insertion in model container [2024-11-17 00:49:12,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:11" (2/3) ... [2024-11-17 00:49:12,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4bbc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:49:12, skipping insertion in model container [2024-11-17 00:49:12,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:49:12" (3/3) ... [2024-11-17 00:49:12,590 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2024-11-17 00:49:12,604 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:49:12,604 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-11-17 00:49:12,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:49:12,644 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;@22669f32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:49:12,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 00:49:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 72 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) [2024-11-17 00:49:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 00:49:12,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:12,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 00:49:12,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:12,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash -390968103, now seen corresponding path program 1 times [2024-11-17 00:49:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951467344] [2024-11-17 00:49:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:12,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:12,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951467344] [2024-11-17 00:49:12,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951467344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:12,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:12,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:49:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521717049] [2024-11-17 00:49:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:12,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:49:12,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:49:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:49:12,881 INFO L87 Difference]: Start difference. First operand has 73 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 72 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) 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) [2024-11-17 00:49:12,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:12,934 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-17 00:49:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:49:12,936 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 [2024-11-17 00:49:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:12,941 INFO L225 Difference]: With dead ends: 70 [2024-11-17 00:49:12,942 INFO L226 Difference]: Without dead ends: 66 [2024-11-17 00:49:12,943 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 [2024-11-17 00:49:12,945 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 2 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:12,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 116 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-17 00:49:12,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-17 00:49:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 65 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) [2024-11-17 00:49:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-11-17 00:49:12,972 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 6 [2024-11-17 00:49:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:12,972 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-11-17 00:49:12,972 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) [2024-11-17 00:49:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-11-17 00:49:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 00:49:12,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:12,973 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 00:49:12,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:49:12,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:12,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash -390968102, now seen corresponding path program 1 times [2024-11-17 00:49:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117080340] [2024-11-17 00:49:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:13,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117080340] [2024-11-17 00:49:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117080340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:13,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:49:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603780748] [2024-11-17 00:49:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:13,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:49:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:49:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:49:13,050 INFO L87 Difference]: Start difference. First operand 66 states and 71 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) [2024-11-17 00:49:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:13,087 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-11-17 00:49:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:49:13,087 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 [2024-11-17 00:49:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:13,088 INFO L225 Difference]: With dead ends: 64 [2024-11-17 00:49:13,088 INFO L226 Difference]: Without dead ends: 64 [2024-11-17 00:49:13,088 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 [2024-11-17 00:49:13,090 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:13,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 115 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-17 00:49:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-17 00:49:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2024-11-17 00:49:13,099 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 6 [2024-11-17 00:49:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:13,099 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2024-11-17 00:49:13,099 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) [2024-11-17 00:49:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2024-11-17 00:49:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-17 00:49:13,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:13,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:13,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:49:13,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:13,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2058850742, now seen corresponding path program 1 times [2024-11-17 00:49:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:13,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347797302] [2024-11-17 00:49:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:13,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347797302] [2024-11-17 00:49:13,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347797302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:13,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:13,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:49:13,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879556831] [2024-11-17 00:49:13,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:13,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:49:13,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:49:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:13,349 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:13,419 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2024-11-17 00:49:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:49:13,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-17 00:49:13,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:13,420 INFO L225 Difference]: With dead ends: 63 [2024-11-17 00:49:13,421 INFO L226 Difference]: Without dead ends: 63 [2024-11-17 00:49:13,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:13,422 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 1 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:13,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 202 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-17 00:49:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-17 00:49:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.446808510638298) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2024-11-17 00:49:13,426 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 10 [2024-11-17 00:49:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:13,426 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2024-11-17 00:49:13,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2024-11-17 00:49:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-17 00:49:13,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:13,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:13,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:49:13,428 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:13,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2058850741, now seen corresponding path program 1 times [2024-11-17 00:49:13,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:13,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855753958] [2024-11-17 00:49:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:13,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855753958] [2024-11-17 00:49:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855753958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:13,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:13,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:49:13,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096611595] [2024-11-17 00:49:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:13,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:49:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:49:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:13,512 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:13,578 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-11-17 00:49:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:49:13,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-17 00:49:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:13,580 INFO L225 Difference]: With dead ends: 62 [2024-11-17 00:49:13,580 INFO L226 Difference]: Without dead ends: 62 [2024-11-17 00:49:13,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:13,581 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:13,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 188 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-17 00:49:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-17 00:49:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.425531914893617) internal successors, (67), 61 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) [2024-11-17 00:49:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2024-11-17 00:49:13,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 10 [2024-11-17 00:49:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:13,591 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2024-11-17 00:49:13,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2024-11-17 00:49:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-17 00:49:13,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:13,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:13,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:49:13,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:13,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1030379554, now seen corresponding path program 1 times [2024-11-17 00:49:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:13,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525447301] [2024-11-17 00:49:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525447301] [2024-11-17 00:49:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525447301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:13,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:13,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:49:13,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846955851] [2024-11-17 00:49:13,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:13,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:49:13,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:49:13,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:49:13,619 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-17 00:49:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:13,625 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2024-11-17 00:49:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:49:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2024-11-17 00:49:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:13,627 INFO L225 Difference]: With dead ends: 71 [2024-11-17 00:49:13,627 INFO L226 Difference]: Without dead ends: 71 [2024-11-17 00:49:13,627 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 [2024-11-17 00:49:13,628 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 7 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:13,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-17 00:49:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2024-11-17 00:49:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2024-11-17 00:49:13,632 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 11 [2024-11-17 00:49:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:13,632 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2024-11-17 00:49:13,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-17 00:49:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2024-11-17 00:49:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-17 00:49:13,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:13,633 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:13,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:49:13,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:13,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash -138747991, now seen corresponding path program 1 times [2024-11-17 00:49:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412763187] [2024-11-17 00:49:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412763187] [2024-11-17 00:49:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412763187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50150865] [2024-11-17 00:49:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:13,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:13,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:13,685 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) [2024-11-17 00:49:13,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:49:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:13,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 00:49:13,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:13,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50150865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:13,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:13,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-17 00:49:13,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556803441] [2024-11-17 00:49:13,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:13,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:49:13,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:49:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:13,831 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:13,852 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2024-11-17 00:49:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:49:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-17 00:49:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:13,853 INFO L225 Difference]: With dead ends: 73 [2024-11-17 00:49:13,853 INFO L226 Difference]: Without dead ends: 73 [2024-11-17 00:49:13,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:13,854 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:13,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 190 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-17 00:49:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-17 00:49:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2024-11-17 00:49:13,858 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 20 [2024-11-17 00:49:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:13,858 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2024-11-17 00:49:13,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2024-11-17 00:49:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 00:49:13,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:13,859 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:13,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:49:14,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 00:49:14,060 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:14,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1691148290, now seen corresponding path program 2 times [2024-11-17 00:49:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126879549] [2024-11-17 00:49:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:49:14,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:14,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126879549] [2024-11-17 00:49:14,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126879549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:14,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:14,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:49:14,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836747096] [2024-11-17 00:49:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:14,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:49:14,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:49:14,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:49:14,244 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:14,456 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2024-11-17 00:49:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:14,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-11-17 00:49:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:14,457 INFO L225 Difference]: With dead ends: 77 [2024-11-17 00:49:14,457 INFO L226 Difference]: Without dead ends: 77 [2024-11-17 00:49:14,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:49:14,463 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 48 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:14,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 278 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:49:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-17 00:49:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-17 00:49:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-11-17 00:49:14,473 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 29 [2024-11-17 00:49:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:14,473 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-11-17 00:49:14,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-11-17 00:49:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 00:49:14,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:14,474 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:14,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:49:14,474 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:14,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1691148291, now seen corresponding path program 1 times [2024-11-17 00:49:14,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:14,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082942348] [2024-11-17 00:49:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:14,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:49:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082942348] [2024-11-17 00:49:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082942348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:14,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:49:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692192030] [2024-11-17 00:49:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:14,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:49:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:49:14,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:49:14,702 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2024-11-17 00:49:14,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:14,843 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-17 00:49:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:49:14,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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 29 [2024-11-17 00:49:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:14,844 INFO L225 Difference]: With dead ends: 77 [2024-11-17 00:49:14,844 INFO L226 Difference]: Without dead ends: 77 [2024-11-17 00:49:14,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:49:14,845 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 45 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:14,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 331 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-17 00:49:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-17 00:49:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-17 00:49:14,852 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 29 [2024-11-17 00:49:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:14,852 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-17 00:49:14,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2024-11-17 00:49:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-17 00:49:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:49:14,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:14,853 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:14,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:49:14,854 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:14,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1067893589, now seen corresponding path program 1 times [2024-11-17 00:49:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428429338] [2024-11-17 00:49:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:49:14,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:14,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428429338] [2024-11-17 00:49:14,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428429338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:14,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:49:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707502191] [2024-11-17 00:49:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:14,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:49:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:49:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:49:14,962 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:15,133 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-17 00:49:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-17 00:49:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:15,134 INFO L225 Difference]: With dead ends: 81 [2024-11-17 00:49:15,135 INFO L226 Difference]: Without dead ends: 81 [2024-11-17 00:49:15,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:49:15,135 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 45 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:15,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 278 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-17 00:49:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-17 00:49:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 80 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-17 00:49:15,139 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 32 [2024-11-17 00:49:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:15,139 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-17 00:49:15,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-17 00:49:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:49:15,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:15,140 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:15,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 00:49:15,141 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:15,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1067893588, now seen corresponding path program 1 times [2024-11-17 00:49:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557179498] [2024-11-17 00:49:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557179498] [2024-11-17 00:49:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557179498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:15,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:49:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052603976] [2024-11-17 00:49:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:15,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:49:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:49:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:49:15,210 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:15,224 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2024-11-17 00:49:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:49:15,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-17 00:49:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:15,225 INFO L225 Difference]: With dead ends: 119 [2024-11-17 00:49:15,225 INFO L226 Difference]: Without dead ends: 119 [2024-11-17 00:49:15,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:49:15,225 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 64 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:15,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-17 00:49:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2024-11-17 00:49:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 84 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2024-11-17 00:49:15,229 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 32 [2024-11-17 00:49:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:15,230 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2024-11-17 00:49:15,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2024-11-17 00:49:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 00:49:15,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:15,231 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:15,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 00:49:15,231 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:15,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1970566180, now seen corresponding path program 1 times [2024-11-17 00:49:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:15,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077272630] [2024-11-17 00:49:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:15,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077272630] [2024-11-17 00:49:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077272630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:15,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:49:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445145191] [2024-11-17 00:49:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:15,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:49:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:49:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:49:15,302 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:15,323 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-17 00:49:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:49:15,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 33 [2024-11-17 00:49:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:15,324 INFO L225 Difference]: With dead ends: 109 [2024-11-17 00:49:15,325 INFO L226 Difference]: Without dead ends: 109 [2024-11-17 00:49:15,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:15,325 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 22 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:15,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 180 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-17 00:49:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2024-11-17 00:49:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 86 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-17 00:49:15,333 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 33 [2024-11-17 00:49:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:15,336 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-17 00:49:15,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-17 00:49:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-17 00:49:15,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:15,337 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:15,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 00:49:15,337 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:15,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1053740600, now seen corresponding path program 1 times [2024-11-17 00:49:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:15,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993544250] [2024-11-17 00:49:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:15,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:15,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993544250] [2024-11-17 00:49:15,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993544250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:15,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089603871] [2024-11-17 00:49:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:15,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:15,449 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) [2024-11-17 00:49:15,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:49:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:15,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 00:49:15,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:15,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089603871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:15,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-17 00:49:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464937166] [2024-11-17 00:49:15,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:15,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:49:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:49:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:49:15,709 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:15,746 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2024-11-17 00:49:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:49:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-17 00:49:15,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:15,747 INFO L225 Difference]: With dead ends: 113 [2024-11-17 00:49:15,747 INFO L226 Difference]: Without dead ends: 113 [2024-11-17 00:49:15,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:49:15,748 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 88 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:15,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 311 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-17 00:49:15,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2024-11-17 00:49:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 104 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) [2024-11-17 00:49:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2024-11-17 00:49:15,756 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 38 [2024-11-17 00:49:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:15,756 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2024-11-17 00:49:15,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2024-11-17 00:49:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:49:15,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:15,757 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:15,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:15,960 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,SelfDestructingSolverStorable11 [2024-11-17 00:49:15,961 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:15,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1885658488, now seen corresponding path program 1 times [2024-11-17 00:49:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665502859] [2024-11-17 00:49:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:49:16,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665502859] [2024-11-17 00:49:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665502859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226034088] [2024-11-17 00:49:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:16,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:16,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:49:16,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:49:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:16,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-17 00:49:16,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:16,709 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-17 00:49:16,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-17 00:49:16,776 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 19 treesize of output 1 [2024-11-17 00:49:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:16,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2024-11-17 00:49:17,000 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 21 treesize of output 9 [2024-11-17 00:49:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:17,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226034088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:17,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 36 [2024-11-17 00:49:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045480233] [2024-11-17 00:49:17,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:17,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-17 00:49:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-17 00:49:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2024-11-17 00:49:17,386 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:18,001 INFO L93 Difference]: Finished difference Result 168 states and 206 transitions. [2024-11-17 00:49:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 00:49:18,001 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-17 00:49:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:18,003 INFO L225 Difference]: With dead ends: 168 [2024-11-17 00:49:18,003 INFO L226 Difference]: Without dead ends: 168 [2024-11-17 00:49:18,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=1996, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 00:49:18,004 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 92 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:18,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 929 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:49:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-17 00:49:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 117. [2024-11-17 00:49:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 116 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2024-11-17 00:49:18,008 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 39 [2024-11-17 00:49:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:18,008 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2024-11-17 00:49:18,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2024-11-17 00:49:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:49:18,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:18,010 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:18,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 00:49:18,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:18,211 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:18,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1885658487, now seen corresponding path program 1 times [2024-11-17 00:49:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551382076] [2024-11-17 00:49:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:49:19,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551382076] [2024-11-17 00:49:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551382076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520578549] [2024-11-17 00:49:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:19,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:19,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:19,013 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) [2024-11-17 00:49:19,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:49:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:19,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-17 00:49:19,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:19,190 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 [2024-11-17 00:49:19,309 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:19,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:19,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:49:19,402 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 [2024-11-17 00:49:19,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:49:19,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:19,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 00:49:19,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:19,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2024-11-17 00:49:19,667 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 31 treesize of output 13 [2024-11-17 00:49:19,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-17 00:49:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:49:19,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:19,904 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (and (forall ((v_ArrVal_559 (Array Int Int))) (or (not (= v_ArrVal_559 (store .cse0 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_559 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))) (< 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_559) |c_ULTIMATE.start_main_~s~0#1.base|) .cse1) 1)))) (forall ((v_ArrVal_560 (Array Int Int))) (or (forall ((v_ArrVal_559 (Array Int Int))) (or (not (= v_ArrVal_559 (store .cse0 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_559 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))) (< (+ 3 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_559) |c_ULTIMATE.start_main_~s~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_560) |c_ULTIMATE.start_main_~s~0#1.base|) .cse1))))) (not (= v_ArrVal_560 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_560 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))))))) is different from false [2024-11-17 00:49:20,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:20,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 55 [2024-11-17 00:49:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 5 not checked. [2024-11-17 00:49:20,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520578549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:20,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:20,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 15] total 47 [2024-11-17 00:49:20,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525326830] [2024-11-17 00:49:20,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:20,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 00:49:20,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 00:49:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2024, Unknown=1, NotChecked=90, Total=2256 [2024-11-17 00:49:20,616 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 48 states, 47 states have (on average 2.297872340425532) internal successors, (108), 48 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:21,777 INFO L93 Difference]: Finished difference Result 184 states and 225 transitions. [2024-11-17 00:49:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 00:49:21,777 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.297872340425532) internal successors, (108), 48 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2024-11-17 00:49:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:21,778 INFO L225 Difference]: With dead ends: 184 [2024-11-17 00:49:21,778 INFO L226 Difference]: Without dead ends: 184 [2024-11-17 00:49:21,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=286, Invalid=3257, Unknown=1, NotChecked=116, Total=3660 [2024-11-17 00:49:21,779 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 101 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:21,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1375 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1291 Invalid, 0 Unknown, 93 Unchecked, 0.6s Time] [2024-11-17 00:49:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-17 00:49:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 127. [2024-11-17 00:49:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 126 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2024-11-17 00:49:21,782 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 39 [2024-11-17 00:49:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:21,782 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2024-11-17 00:49:21,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.297872340425532) internal successors, (108), 48 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2024-11-17 00:49:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 00:49:21,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:21,783 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:21,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:49:21,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:21,988 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:21,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash 850527146, now seen corresponding path program 2 times [2024-11-17 00:49:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:21,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740366650] [2024-11-17 00:49:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:21,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740366650] [2024-11-17 00:49:22,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740366650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662050789] [2024-11-17 00:49:22,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:49:22,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:22,054 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) [2024-11-17 00:49:22,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:49:22,161 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:49:22,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:49:22,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:49:22,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 00:49:22,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 00:49:22,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662050789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:22,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:22,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2024-11-17 00:49:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975596207] [2024-11-17 00:49:22,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:22,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:49:22,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:49:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:49:22,238 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:22,282 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2024-11-17 00:49:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:49:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-17 00:49:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:22,283 INFO L225 Difference]: With dead ends: 119 [2024-11-17 00:49:22,283 INFO L226 Difference]: Without dead ends: 119 [2024-11-17 00:49:22,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:49:22,283 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 108 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:22,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 237 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-17 00:49:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2024-11-17 00:49:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 110 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2024-11-17 00:49:22,286 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 43 [2024-11-17 00:49:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:22,286 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2024-11-17 00:49:22,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2024-11-17 00:49:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-17 00:49:22,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:22,287 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:22,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 00:49:22,491 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,SelfDestructingSolverStorable14 [2024-11-17 00:49:22,492 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:22,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1532239388, now seen corresponding path program 2 times [2024-11-17 00:49:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:22,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477722818] [2024-11-17 00:49:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477722818] [2024-11-17 00:49:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477722818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745599255] [2024-11-17 00:49:22,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:49:22,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:22,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:22,557 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) [2024-11-17 00:49:22,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:49:22,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:49:22,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:49:22,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 00:49:22,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:22,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:49:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745599255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:22,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:22,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-17 00:49:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501903896] [2024-11-17 00:49:22,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:22,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:49:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:49:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:49:22,718 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2024-11-17 00:49:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:22,743 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2024-11-17 00:49:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:49:22,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 44 [2024-11-17 00:49:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:22,744 INFO L225 Difference]: With dead ends: 115 [2024-11-17 00:49:22,744 INFO L226 Difference]: Without dead ends: 115 [2024-11-17 00:49:22,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:49:22,744 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 47 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:22,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 285 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-17 00:49:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2024-11-17 00:49:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 106 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) [2024-11-17 00:49:22,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2024-11-17 00:49:22,746 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 44 [2024-11-17 00:49:22,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:22,747 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2024-11-17 00:49:22,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2024-11-17 00:49:22,747 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2024-11-17 00:49:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:49:22,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:22,748 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:22,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:49:22,948 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,SelfDestructingSolverStorable15 [2024-11-17 00:49:22,949 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:22,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1413585406, now seen corresponding path program 1 times [2024-11-17 00:49:22,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:22,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696677814] [2024-11-17 00:49:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 00:49:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696677814] [2024-11-17 00:49:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696677814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:49:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331184471] [2024-11-17 00:49:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:23,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:49:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:49:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:49:23,218 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 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) [2024-11-17 00:49:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:23,348 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2024-11-17 00:49:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 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) Word has length 48 [2024-11-17 00:49:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:23,349 INFO L225 Difference]: With dead ends: 107 [2024-11-17 00:49:23,349 INFO L226 Difference]: Without dead ends: 107 [2024-11-17 00:49:23,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:49:23,350 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 32 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:23,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 360 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-17 00:49:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-17 00:49:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 95 states have (on average 1.2526315789473683) internal successors, (119), 106 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2024-11-17 00:49:23,352 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 48 [2024-11-17 00:49:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:23,353 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2024-11-17 00:49:23,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 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) [2024-11-17 00:49:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2024-11-17 00:49:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:49:23,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:23,354 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:23,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 00:49:23,354 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:23,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash -155945586, now seen corresponding path program 3 times [2024-11-17 00:49:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:23,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899377775] [2024-11-17 00:49:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 00:49:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:23,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899377775] [2024-11-17 00:49:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899377775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294906637] [2024-11-17 00:49:23,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:49:23,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:23,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:23,449 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) [2024-11-17 00:49:23,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:49:23,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 00:49:23,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:49:23,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:49:23,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-17 00:49:23,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-17 00:49:23,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294906637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:23,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-17 00:49:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774886365] [2024-11-17 00:49:23,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:23,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:49:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:49:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:49:23,703 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:23,756 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2024-11-17 00:49:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:49:23,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-17 00:49:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:23,757 INFO L225 Difference]: With dead ends: 107 [2024-11-17 00:49:23,757 INFO L226 Difference]: Without dead ends: 107 [2024-11-17 00:49:23,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:49:23,758 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:23,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 316 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-17 00:49:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2024-11-17 00:49:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-11-17 00:49:23,760 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 49 [2024-11-17 00:49:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:23,761 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-11-17 00:49:23,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-11-17 00:49:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 00:49:23,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:23,762 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:23,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:23,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:23,962 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:23,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1008465379, now seen corresponding path program 1 times [2024-11-17 00:49:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:23,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371669733] [2024-11-17 00:49:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-17 00:49:24,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:24,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371669733] [2024-11-17 00:49:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371669733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:24,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:49:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714481233] [2024-11-17 00:49:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:24,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:49:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:49:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:49:24,034 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:24,053 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2024-11-17 00:49:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:49:24,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-17 00:49:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:24,054 INFO L225 Difference]: With dead ends: 97 [2024-11-17 00:49:24,054 INFO L226 Difference]: Without dead ends: 97 [2024-11-17 00:49:24,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:49:24,055 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:24,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 167 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-17 00:49:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2024-11-17 00:49:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 92 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) [2024-11-17 00:49:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2024-11-17 00:49:24,056 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 52 [2024-11-17 00:49:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:24,056 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2024-11-17 00:49:24,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2024-11-17 00:49:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-17 00:49:24,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:24,057 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:24,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 00:49:24,058 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:24,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1642762822, now seen corresponding path program 1 times [2024-11-17 00:49:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:24,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448342571] [2024-11-17 00:49:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:24,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448342571] [2024-11-17 00:49:24,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448342571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341278720] [2024-11-17 00:49:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:24,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:24,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:24,879 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) [2024-11-17 00:49:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:49:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:25,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-17 00:49:25,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:25,085 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:25,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:25,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:49:25,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-17 00:49:25,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:49:25,480 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 20 treesize of output 8 [2024-11-17 00:49:25,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:49:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:25,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:25,786 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1073 (Array Int Int))) (= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1073) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-11-17 00:49:25,941 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1073 (Array Int Int))) (= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_sll_update_at_~head#1.offset| 4)) v_ArrVal_1073) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-11-17 00:49:25,959 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1073 (Array Int Int))) (= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_1073) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-11-17 00:49:25,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:25,977 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-17 00:49:25,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:25,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2024-11-17 00:49:25,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-17 00:49:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2024-11-17 00:49:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341278720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:26,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:26,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 22] total 62 [2024-11-17 00:49:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408797736] [2024-11-17 00:49:26,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-17 00:49:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-17 00:49:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3220, Unknown=16, NotChecked=348, Total=3782 [2024-11-17 00:49:26,353 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 62 states, 62 states have (on average 2.306451612903226) internal successors, (143), 62 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:27,522 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2024-11-17 00:49:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 00:49:27,523 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.306451612903226) internal successors, (143), 62 states have internal predecessors, (143), 0 states have call successors, (0), 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 54 [2024-11-17 00:49:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:27,524 INFO L225 Difference]: With dead ends: 99 [2024-11-17 00:49:27,524 INFO L226 Difference]: Without dead ends: 99 [2024-11-17 00:49:27,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=462, Invalid=6014, Unknown=16, NotChecked=480, Total=6972 [2024-11-17 00:49:27,526 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 176 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:27,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1510 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1293 Invalid, 0 Unknown, 223 Unchecked, 0.5s Time] [2024-11-17 00:49:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-17 00:49:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-11-17 00:49:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 82 states have (on average 1.170731707317073) internal successors, (96), 92 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2024-11-17 00:49:27,528 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 54 [2024-11-17 00:49:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:27,528 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2024-11-17 00:49:27,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.306451612903226) internal successors, (143), 62 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2024-11-17 00:49:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-17 00:49:27,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:27,529 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:27,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:27,733 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 [2024-11-17 00:49:27,734 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:27,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1726527944, now seen corresponding path program 1 times [2024-11-17 00:49:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975986529] [2024-11-17 00:49:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:28,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975986529] [2024-11-17 00:49:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975986529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156552954] [2024-11-17 00:49:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:28,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:28,940 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) [2024-11-17 00:49:28,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 00:49:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:29,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-17 00:49:29,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:29,146 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:29,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:29,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:49:29,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:29,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-17 00:49:29,585 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 00:49:29,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-17 00:49:29,707 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 31 treesize of output 13 [2024-11-17 00:49:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:49:29,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:29,805 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-17 00:49:29,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-17 00:49:30,027 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1180 (Array Int Int))) (or (not (= v_ArrVal_1180 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1180 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1180) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_main_~s~0#1.base|)))) is different from false [2024-11-17 00:49:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2024-11-17 00:49:30,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156552954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:30,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:30,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 18, 18] total 51 [2024-11-17 00:49:30,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752560474] [2024-11-17 00:49:30,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:30,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-17 00:49:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:30,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-17 00:49:30,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2374, Unknown=46, NotChecked=98, Total=2652 [2024-11-17 00:49:30,182 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 52 states, 51 states have (on average 2.803921568627451) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:31,402 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2024-11-17 00:49:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 00:49:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.803921568627451) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 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 60 [2024-11-17 00:49:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:31,404 INFO L225 Difference]: With dead ends: 104 [2024-11-17 00:49:31,404 INFO L226 Difference]: Without dead ends: 104 [2024-11-17 00:49:31,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=354, Invalid=4860, Unknown=46, NotChecked=142, Total=5402 [2024-11-17 00:49:31,405 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 265 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:31,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1469 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1620 Invalid, 0 Unknown, 79 Unchecked, 0.6s Time] [2024-11-17 00:49:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-17 00:49:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2024-11-17 00:49:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 97 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) [2024-11-17 00:49:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-11-17 00:49:31,407 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 60 [2024-11-17 00:49:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:31,407 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-11-17 00:49:31,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.803921568627451) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-11-17 00:49:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-17 00:49:31,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:31,413 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:31,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:31,613 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 [2024-11-17 00:49:31,613 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:31,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1726527945, now seen corresponding path program 1 times [2024-11-17 00:49:31,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19595641] [2024-11-17 00:49:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19595641] [2024-11-17 00:49:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19595641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846663123] [2024-11-17 00:49:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:32,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:32,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:32,840 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) [2024-11-17 00:49:32,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 00:49:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:33,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-17 00:49:33,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:33,016 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 [2024-11-17 00:49:33,178 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:33,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:33,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:49:33,299 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 19 treesize of output 1 [2024-11-17 00:49:33,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:49:33,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:33,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 00:49:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:33,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2024-11-17 00:49:33,756 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 00:49:33,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-17 00:49:33,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-17 00:49:33,921 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 31 treesize of output 13 [2024-11-17 00:49:33,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-17 00:49:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:49:34,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:34,571 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (and (forall ((v_ArrVal_1292 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1292))) (or (not (= (store .cse0 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1292 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_1292)) (< (select (select .cse1 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) 0) (forall ((v_ArrVal_1293 (Array Int Int))) (or (not (= v_ArrVal_1293 (store .cse3 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1293 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))) (forall ((v_ArrVal_1295 (Array Int Int)) (v_ArrVal_1294 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1293))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2))) (<= (+ (select (select (store .cse1 .cse4 v_ArrVal_1295) |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) 4) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1294) |c_ULTIMATE.start_main_~s~0#1.base|) .cse2))))))))))) (forall ((v_ArrVal_1292 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1292))) (or (not (= (store .cse0 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1292 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_1292)) (< (select (select .cse6 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) 0) (forall ((v_ArrVal_1293 (Array Int Int))) (or (not (= v_ArrVal_1293 (store .cse3 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1293 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))) (forall ((v_ArrVal_1295 (Array Int Int))) (<= 0 (select (select (store .cse6 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1293) |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) v_ArrVal_1295) |c_ULTIMATE.start_main_~s~0#1.base|) .cse2)))))))))) is different from false [2024-11-17 00:49:39,868 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 169 treesize of output 165 [2024-11-17 00:49:39,872 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 193 treesize of output 191 [2024-11-17 00:49:39,893 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 125 treesize of output 121 [2024-11-17 00:49:39,900 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 121 treesize of output 117 [2024-11-17 00:49:39,926 INFO L349 Elim1Store]: treesize reduction 16, result has 60.0 percent of original size [2024-11-17 00:49:39,927 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 131 [2024-11-17 00:49:39,966 INFO L349 Elim1Store]: treesize reduction 32, result has 59.5 percent of original size [2024-11-17 00:49:39,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 107 treesize of output 157 [2024-11-17 00:49:39,974 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 87 treesize of output 83 [2024-11-17 00:49:40,032 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 8 treesize of output 6 [2024-11-17 00:49:40,066 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 8 treesize of output 6 [2024-11-17 00:49:40,107 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 8 treesize of output 6 [2024-11-17 00:49:40,131 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 67 treesize of output 55 [2024-11-17 00:49:40,158 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-17 00:49:40,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 70 [2024-11-17 00:49:40,161 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 70 treesize of output 58 [2024-11-17 00:49:40,634 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:49:40,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-17 00:49:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 23 refuted. 2 times theorem prover too weak. 2 trivial. 5 not checked. [2024-11-17 00:49:40,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846663123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:40,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:40,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 22] total 69 [2024-11-17 00:49:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839884071] [2024-11-17 00:49:40,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:40,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-17 00:49:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-17 00:49:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4455, Unknown=40, NotChecked=134, Total=4830 [2024-11-17 00:49:40,835 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 70 states, 69 states have (on average 2.4782608695652173) internal successors, (171), 70 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) [2024-11-17 00:49:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:43,814 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2024-11-17 00:49:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 00:49:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.4782608695652173) internal successors, (171), 70 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 60 [2024-11-17 00:49:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:43,815 INFO L225 Difference]: With dead ends: 104 [2024-11-17 00:49:43,815 INFO L226 Difference]: Without dead ends: 104 [2024-11-17 00:49:43,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=577, Invalid=8129, Unknown=40, NotChecked=184, Total=8930 [2024-11-17 00:49:43,817 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 265 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:43,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2071 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2211 Invalid, 0 Unknown, 86 Unchecked, 1.4s Time] [2024-11-17 00:49:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-17 00:49:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2024-11-17 00:49:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 96 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) [2024-11-17 00:49:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2024-11-17 00:49:43,823 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 60 [2024-11-17 00:49:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:43,823 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2024-11-17 00:49:43,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.4782608695652173) internal successors, (171), 70 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) [2024-11-17 00:49:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2024-11-17 00:49:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-17 00:49:43,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:43,824 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:43,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:44,025 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 [2024-11-17 00:49:44,025 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:44,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash 211153131, now seen corresponding path program 1 times [2024-11-17 00:49:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216246893] [2024-11-17 00:49:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-17 00:49:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216246893] [2024-11-17 00:49:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216246893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520532942] [2024-11-17 00:49:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:44,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:44,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:44,089 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) [2024-11-17 00:49:44,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 00:49:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:44,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 00:49:44,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-17 00:49:44,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-17 00:49:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520532942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:44,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:44,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-17 00:49:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419014703] [2024-11-17 00:49:44,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:44,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:49:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:44,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:49:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:49:44,288 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:44,324 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2024-11-17 00:49:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:49:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-17 00:49:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:44,324 INFO L225 Difference]: With dead ends: 97 [2024-11-17 00:49:44,324 INFO L226 Difference]: Without dead ends: 97 [2024-11-17 00:49:44,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:49:44,325 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 61 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:44,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 185 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:44,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-17 00:49:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-17 00:49:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2024-11-17 00:49:44,327 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 62 [2024-11-17 00:49:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:44,327 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2024-11-17 00:49:44,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2024-11-17 00:49:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-17 00:49:44,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:44,328 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:44,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 00:49:44,532 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 [2024-11-17 00:49:44,533 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:44,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -287764950, now seen corresponding path program 2 times [2024-11-17 00:49:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991251564] [2024-11-17 00:49:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-17 00:49:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991251564] [2024-11-17 00:49:44,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991251564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141365703] [2024-11-17 00:49:44,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:49:44,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:44,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:44,611 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) [2024-11-17 00:49:44,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 00:49:44,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:49:44,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:49:44,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:49:44,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-17 00:49:44,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-17 00:49:44,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141365703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:44,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:44,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2024-11-17 00:49:44,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017255333] [2024-11-17 00:49:44,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:44,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:49:44,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:44,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:49:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:49:44,913 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:44,964 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2024-11-17 00:49:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:49:44,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-17 00:49:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:44,965 INFO L225 Difference]: With dead ends: 87 [2024-11-17 00:49:44,965 INFO L226 Difference]: Without dead ends: 87 [2024-11-17 00:49:44,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:49:44,966 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 38 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:44,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 215 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:49:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-17 00:49:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-17 00:49:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.1) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-11-17 00:49:44,967 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 64 [2024-11-17 00:49:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:44,967 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-11-17 00:49:44,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-11-17 00:49:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-17 00:49:44,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:44,968 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:44,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:45,172 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 [2024-11-17 00:49:45,173 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:45,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1505932493, now seen corresponding path program 1 times [2024-11-17 00:49:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:45,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454179774] [2024-11-17 00:49:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:45,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454179774] [2024-11-17 00:49:46,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454179774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589334779] [2024-11-17 00:49:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:46,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:46,494 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) [2024-11-17 00:49:46,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 00:49:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:46,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-17 00:49:46,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:46,776 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:46,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:46,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:49:47,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:47,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-17 00:49:47,427 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 00:49:47,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 73 [2024-11-17 00:49:47,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2024-11-17 00:49:47,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2024-11-17 00:49:47,755 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 39 treesize of output 21 [2024-11-17 00:49:47,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:49:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:49:47,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:48,215 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 86 treesize of output 64 [2024-11-17 00:49:48,223 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (and (forall ((v_ArrVal_1611 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1611) |c_ULTIMATE.start_main_~s~0#1.base|) .cse0) |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) (= |c_ULTIMATE.start_sll_update_at_~data#1| (+ |c_ULTIMATE.start_main_~len~0#1| 1)) (forall ((v_ArrVal_1612 (Array Int Int))) (= |c_ULTIMATE.start_sll_update_at_~head#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1612) |c_ULTIMATE.start_main_~s~0#1.base|) .cse0))))) is different from false [2024-11-17 00:49:48,243 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (and (= |c_ULTIMATE.start_sll_update_at_~data#1| (+ |c_ULTIMATE.start_main_~len~0#1| 1)) (forall ((v_ArrVal_1612 (Array Int Int))) (= |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_1612) |c_ULTIMATE.start_main_~s~0#1.base|) .cse0))) (forall ((v_ArrVal_1611 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_1611) |c_ULTIMATE.start_main_~s~0#1.base|) .cse0) |c_ULTIMATE.start_sll_update_at_#t~mem10#1.offset|)))) is different from false [2024-11-17 00:49:48,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:48,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2024-11-17 00:49:48,261 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 17 treesize of output 13 [2024-11-17 00:49:48,465 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1610 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1610) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_main_~s~0#1.base|)) (not (= (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1610 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_1610)))) (= |c_ULTIMATE.start_main_~i~0#1| 0)) is different from false [2024-11-17 00:49:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-17 00:49:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589334779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:48,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:48,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 25] total 72 [2024-11-17 00:49:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542568207] [2024-11-17 00:49:48,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:48,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-17 00:49:48,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-17 00:49:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=4479, Unknown=3, NotChecked=408, Total=5112 [2024-11-17 00:49:48,931 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 72 states, 72 states have (on average 2.513888888888889) internal successors, (181), 72 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:51,012 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2024-11-17 00:49:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-17 00:49:51,013 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.513888888888889) internal successors, (181), 72 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-17 00:49:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:51,013 INFO L225 Difference]: With dead ends: 89 [2024-11-17 00:49:51,013 INFO L226 Difference]: Without dead ends: 89 [2024-11-17 00:49:51,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=575, Invalid=8746, Unknown=3, NotChecked=576, Total=9900 [2024-11-17 00:49:51,015 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 101 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:51,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1819 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1923 Invalid, 0 Unknown, 212 Unchecked, 0.9s Time] [2024-11-17 00:49:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-17 00:49:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2024-11-17 00:49:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2024-11-17 00:49:51,023 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 66 [2024-11-17 00:49:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:51,023 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2024-11-17 00:49:51,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.513888888888889) internal successors, (181), 72 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2024-11-17 00:49:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-17 00:49:51,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:51,024 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:51,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 00:49:51,224 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 [2024-11-17 00:49:51,225 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:51,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:51,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1051101557, now seen corresponding path program 1 times [2024-11-17 00:49:51,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:51,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199015283] [2024-11-17 00:49:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:51,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-17 00:49:51,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:51,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199015283] [2024-11-17 00:49:51,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199015283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:51,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:51,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:49:51,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466719325] [2024-11-17 00:49:51,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:51,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:49:51,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:49:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:49:51,414 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:51,585 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2024-11-17 00:49:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2024-11-17 00:49:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:51,585 INFO L225 Difference]: With dead ends: 85 [2024-11-17 00:49:51,586 INFO L226 Difference]: Without dead ends: 85 [2024-11-17 00:49:51,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:49:51,586 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:51,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 190 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-17 00:49:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-17 00:49:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.1) internal successors, (88), 84 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-17 00:49:51,588 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 69 [2024-11-17 00:49:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:51,588 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-17 00:49:51,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-17 00:49:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-17 00:49:51,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:51,589 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:51,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-17 00:49:51,589 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:51,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1051101558, now seen corresponding path program 1 times [2024-11-17 00:49:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277806835] [2024-11-17 00:49:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:49:51,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:51,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277806835] [2024-11-17 00:49:51,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277806835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:51,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:51,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:49:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869768780] [2024-11-17 00:49:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:51,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:49:51,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:49:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:49:51,772 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:51,922 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2024-11-17 00:49:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:51,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2024-11-17 00:49:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:51,923 INFO L225 Difference]: With dead ends: 87 [2024-11-17 00:49:51,923 INFO L226 Difference]: Without dead ends: 87 [2024-11-17 00:49:51,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:49:51,923 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:51,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-17 00:49:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-17 00:49:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-11-17 00:49:51,925 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 69 [2024-11-17 00:49:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:51,925 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-11-17 00:49:51,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-11-17 00:49:51,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-17 00:49:51,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:51,926 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:51,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-17 00:49:51,926 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:51,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 791242411, now seen corresponding path program 1 times [2024-11-17 00:49:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362543571] [2024-11-17 00:49:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:49:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362543571] [2024-11-17 00:49:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362543571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:52,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:52,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:49:52,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945737608] [2024-11-17 00:49:52,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:52,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:49:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:49:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:49:52,034 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:52,150 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-17 00:49:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:52,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 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 71 [2024-11-17 00:49:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:52,151 INFO L225 Difference]: With dead ends: 90 [2024-11-17 00:49:52,151 INFO L226 Difference]: Without dead ends: 90 [2024-11-17 00:49:52,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:49:52,151 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:52,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 268 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-17 00:49:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2024-11-17 00:49:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:52,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-11-17 00:49:52,153 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 71 [2024-11-17 00:49:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:52,153 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-11-17 00:49:52,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:52,154 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-11-17 00:49:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-17 00:49:52,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:52,154 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:52,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-17 00:49:52,154 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:52,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1240080545, now seen corresponding path program 1 times [2024-11-17 00:49:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110657207] [2024-11-17 00:49:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:49:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110657207] [2024-11-17 00:49:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110657207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:49:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:49:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:49:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737174439] [2024-11-17 00:49:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:49:52,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:49:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:49:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:49:52,292 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:52,433 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2024-11-17 00:49:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:49:52,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-17 00:49:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:52,434 INFO L225 Difference]: With dead ends: 88 [2024-11-17 00:49:52,434 INFO L226 Difference]: Without dead ends: 88 [2024-11-17 00:49:52,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:49:52,435 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:52,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 252 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:49:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-17 00:49:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-17 00:49:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.072289156626506) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-11-17 00:49:52,440 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 72 [2024-11-17 00:49:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:52,440 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-11-17 00:49:52,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-11-17 00:49:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-17 00:49:52,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:52,443 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:52,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-17 00:49:52,443 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:52,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash -118447622, now seen corresponding path program 1 times [2024-11-17 00:49:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697132097] [2024-11-17 00:49:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-17 00:49:53,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:53,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697132097] [2024-11-17 00:49:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697132097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036200181] [2024-11-17 00:49:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:53,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:53,590 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) [2024-11-17 00:49:53,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 00:49:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:53,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-17 00:49:53,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:53,820 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:53,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:53,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:49:54,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:54,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-17 00:49:54,204 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:49:54,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-17 00:49:54,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:54,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2024-11-17 00:49:54,552 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-17 00:49:54,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 13 [2024-11-17 00:49:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:49:54,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:49:54,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:54,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2024-11-17 00:49:55,084 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) (.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|))) (and (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_prenex_11 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1930))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_prenex_11) |c_ULTIMATE.start_main_~s~0#1.base|) 4))))) (not (= (store .cse3 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1930 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_1930)))) (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_ArrVal_1931 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1930))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) v_ArrVal_1931)) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) (not (= (store .cse3 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_1930 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_1930)))))) is different from false [2024-11-17 00:49:55,126 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) (.cse1 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_ArrVal_1931 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_1930) (select v_ArrVal_1930 .cse0) v_ArrVal_1931) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) (not (= (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_prenex_11 (Array Int Int))) (let ((.cse2 (select v_ArrVal_1930 .cse0))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_1930) .cse2 v_prenex_11) |c_ULTIMATE.start_main_~s~0#1.base|) 4) .cse2))) (not (= (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|))))) is different from false [2024-11-17 00:49:55,179 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_sll_create_#res#1.offset| 4)) (.cse1 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base|))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (< |c_ULTIMATE.start_sll_create_#res#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|) (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_ArrVal_1931 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_create_#res#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base| v_ArrVal_1930) (select v_ArrVal_1930 .cse0) v_ArrVal_1931) |c_ULTIMATE.start_sll_create_#res#1.base|) 4)))) (not (= (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_prenex_11 (Array Int Int))) (let ((.cse2 (select v_ArrVal_1930 .cse0))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base| v_ArrVal_1930) .cse2 v_prenex_11) |c_ULTIMATE.start_sll_create_#res#1.base|) 4) .cse2))) (not (= (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))) (< |c_ULTIMATE.start_sll_create_#res#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|))))) is different from false [2024-11-17 00:49:55,220 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse1 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_ArrVal_1931 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| v_ArrVal_1930) (select v_ArrVal_1930 .cse0) v_ArrVal_1931) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) |c_ULTIMATE.start_sll_create_~head~0#1.base|))) (not (= (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))) (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_prenex_11 (Array Int Int))) (let ((.cse2 (select v_ArrVal_1930 .cse0))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| v_ArrVal_1930) .cse2 v_prenex_11) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) .cse2))) (not (= (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))) (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|))))) is different from false [2024-11-17 00:49:55,290 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| 4)) (.cse2 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_prenex_11 (Array Int Int))) (let ((.cse0 (select v_ArrVal_1930 .cse1))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| v_ArrVal_1930) .cse0 v_prenex_11) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4) .cse0))) (not (= (store .cse2 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))) (< |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_81| Int)) (or (< |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|) (forall ((v_ArrVal_1930 (Array Int Int))) (or (forall ((v_ArrVal_1931 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| v_ArrVal_1930) (select v_ArrVal_1930 .cse1) v_ArrVal_1931) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4)))) (not (= (store .cse2 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81| (select v_ArrVal_1930 |v_ULTIMATE.start_sll_update_at_~head#1.offset_81|)) v_ArrVal_1930)))))))) is different from false [2024-11-17 00:49:55,297 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 52 treesize of output 50 [2024-11-17 00:49:55,302 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:49:55,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:55,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 8 [2024-11-17 00:49:55,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:55,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2024-11-17 00:49:55,316 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 [2024-11-17 00:49:55,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-17 00:49:55,328 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:49:55,331 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:49:55,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-17 00:49:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 12 not checked. [2024-11-17 00:49:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036200181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:49:55,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:49:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 21] total 52 [2024-11-17 00:49:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118022584] [2024-11-17 00:49:55,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:49:55,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-17 00:49:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:49:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-17 00:49:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2103, Unknown=5, NotChecked=480, Total=2756 [2024-11-17 00:49:55,414 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 53 states, 52 states have (on average 2.9423076923076925) internal successors, (153), 53 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:56,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:49:56,778 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2024-11-17 00:49:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 00:49:56,779 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.9423076923076925) internal successors, (153), 53 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-17 00:49:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:49:56,779 INFO L225 Difference]: With dead ends: 99 [2024-11-17 00:49:56,779 INFO L226 Difference]: Without dead ends: 99 [2024-11-17 00:49:56,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=300, Invalid=3621, Unknown=5, NotChecked=630, Total=4556 [2024-11-17 00:49:56,781 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:49:56,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 900 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1356 Invalid, 0 Unknown, 384 Unchecked, 0.7s Time] [2024-11-17 00:49:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-17 00:49:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-11-17 00:49:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0909090909090908) internal successors, (96), 92 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2024-11-17 00:49:56,782 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 77 [2024-11-17 00:49:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:49:56,783 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2024-11-17 00:49:56,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.9423076923076925) internal successors, (153), 53 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:49:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2024-11-17 00:49:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-17 00:49:56,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:49:56,783 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:49:56,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 00:49:56,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:56,984 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:49:56,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:49:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash -118447621, now seen corresponding path program 1 times [2024-11-17 00:49:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:49:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225566246] [2024-11-17 00:49:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:49:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:49:58,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:49:58,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225566246] [2024-11-17 00:49:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225566246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:49:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525082040] [2024-11-17 00:49:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:49:58,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:49:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:49:58,774 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) [2024-11-17 00:49:58,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 00:49:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:49:58,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-17 00:49:58,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:49:58,975 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 [2024-11-17 00:49:59,173 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-17 00:49:59,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-17 00:49:59,211 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:49:59,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:49:59,395 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 15 treesize of output 1 [2024-11-17 00:49:59,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:49:59,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:59,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:49:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:49:59,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-17 00:49:59,976 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:49:59,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-17 00:49:59,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-17 00:50:00,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:00,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-17 00:50:00,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:00,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2024-11-17 00:50:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:50:00,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:50:01,398 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse2 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (and (forall ((v_ArrVal_2045 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2045))) (or (forall ((v_ArrVal_2046 (Array Int Int))) (or (forall ((v_ArrVal_2047 (Array Int Int))) (<= 0 (+ 4 (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2046) |c_ULTIMATE.start_main_~s~0#1.base|) .cse1) v_ArrVal_2047) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) (not (= (store .cse2 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_2046 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_2046)))) (not (= (store .cse3 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_2045 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_2045)) (< (select (select .cse0 |c_ULTIMATE.start_main_~s~0#1.base|) .cse1) 0)))) (forall ((v_ArrVal_2045 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2045))) (or (not (= (store .cse3 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_2045 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_2045)) (< (select (select .cse4 |c_ULTIMATE.start_main_~s~0#1.base|) .cse1) 0) (forall ((v_ArrVal_2046 (Array Int Int))) (or (not (= (store .cse2 |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_2046 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_2046)) (forall ((v_ArrVal_2048 (Array Int Int)) (v_ArrVal_2047 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2046))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~s~0#1.base|) .cse1))) (<= (+ 8 (select (select (store .cse4 .cse5 v_ArrVal_2047) |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_2048) |c_ULTIMATE.start_main_~s~0#1.base|) 4))))))))))))) is different from false [2024-11-17 00:50:08,383 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 157 treesize of output 153 [2024-11-17 00:50:08,388 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 187 treesize of output 185 [2024-11-17 00:50:08,393 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 127 treesize of output 125 [2024-11-17 00:50:08,396 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 125 treesize of output 123 [2024-11-17 00:50:08,419 INFO L349 Elim1Store]: treesize reduction 16, result has 60.0 percent of original size [2024-11-17 00:50:08,419 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 137 [2024-11-17 00:50:08,465 INFO L349 Elim1Store]: treesize reduction 32, result has 59.5 percent of original size [2024-11-17 00:50:08,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 163 [2024-11-17 00:50:08,474 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 93 treesize of output 91 [2024-11-17 00:50:08,538 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 8 treesize of output 6 [2024-11-17 00:50:08,580 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 8 treesize of output 6 [2024-11-17 00:50:08,622 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 8 treesize of output 6 [2024-11-17 00:50:08,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:08,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 69 [2024-11-17 00:50:08,831 INFO L349 Elim1Store]: treesize reduction 102, result has 19.0 percent of original size [2024-11-17 00:50:08,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 150 treesize of output 130 [2024-11-17 00:50:08,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:08,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 110 [2024-11-17 00:50:09,915 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:50:09,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-17 00:50:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 19 refuted. 2 times theorem prover too weak. 16 trivial. 5 not checked. [2024-11-17 00:50:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525082040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:50:10,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:50:10,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 23, 24] total 74 [2024-11-17 00:50:10,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639346108] [2024-11-17 00:50:10,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:50:10,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-17 00:50:10,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:50:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-17 00:50:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5082, Unknown=112, NotChecked=144, Total=5550 [2024-11-17 00:50:10,154 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 75 states, 74 states have (on average 2.6621621621621623) internal successors, (197), 75 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:50:14,136 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-11-17 00:50:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-17 00:50:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.6621621621621623) internal successors, (197), 75 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-17 00:50:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:50:14,137 INFO L225 Difference]: With dead ends: 101 [2024-11-17 00:50:14,137 INFO L226 Difference]: Without dead ends: 101 [2024-11-17 00:50:14,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=527, Invalid=8673, Unknown=116, NotChecked=190, Total=9506 [2024-11-17 00:50:14,139 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 115 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-17 00:50:14,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1327 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2479 Invalid, 0 Unknown, 78 Unchecked, 1.8s Time] [2024-11-17 00:50:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-17 00:50:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2024-11-17 00:50:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0777777777777777) internal successors, (97), 94 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) [2024-11-17 00:50:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2024-11-17 00:50:14,141 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 77 [2024-11-17 00:50:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:50:14,141 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2024-11-17 00:50:14,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.6621621621621623) internal successors, (197), 75 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2024-11-17 00:50:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-17 00:50:14,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:50:14,142 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:50:14,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 00:50:14,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:50:14,343 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:50:14,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:50:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2135912944, now seen corresponding path program 1 times [2024-11-17 00:50:14,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:50:14,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139823863] [2024-11-17 00:50:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:50:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:50:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:50:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:50:15,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:50:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139823863] [2024-11-17 00:50:15,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139823863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:50:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57141323] [2024-11-17 00:50:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:50:15,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:50:15,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:50:15,540 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) [2024-11-17 00:50:15,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 00:50:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:50:15,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-17 00:50:15,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:50:15,881 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:50:15,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:50:15,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:50:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:50:16,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-17 00:50:16,411 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:50:16,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-17 00:50:16,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:16,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 00:50:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:50:16,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:50:17,006 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2158 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2158) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) is different from false [2024-11-17 00:50:17,017 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2158 (Array Int Int)) (v_ArrVal_2157 (Array Int Int))) (or (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2157))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2158)) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 0)) (not (= v_ArrVal_2157 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_2157 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)))))) is different from false [2024-11-17 00:50:17,037 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2158 (Array Int Int)) (|v_ULTIMATE.start_sll_update_at_~head#1.offset_96| Int) (v_ArrVal_2157 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_2157) (select v_ArrVal_2157 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2158) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 0)) (not (= v_ArrVal_2157 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_96| (select v_ArrVal_2157 |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|)))))) is different from false [2024-11-17 00:50:17,056 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2158 (Array Int Int)) (|v_ULTIMATE.start_sll_update_at_~head#1.offset_96| Int) (v_ArrVal_2157 (Array Int Int))) (or (not (= v_ArrVal_2157 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_96| (select v_ArrVal_2157 |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|)))) (< |c_ULTIMATE.start_sll_create_#res#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base| v_ArrVal_2157) (select v_ArrVal_2157 (+ |c_ULTIMATE.start_sll_create_#res#1.offset| 4)) v_ArrVal_2158) |c_ULTIMATE.start_sll_create_#res#1.base|) 4) 0)))) is different from false [2024-11-17 00:50:17,066 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2158 (Array Int Int)) (|v_ULTIMATE.start_sll_update_at_~head#1.offset_96| Int) (v_ArrVal_2157 (Array Int Int))) (or (not (= v_ArrVal_2157 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_96| (select v_ArrVal_2157 |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|)))) (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| v_ArrVal_2157) (select v_ArrVal_2157 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) v_ArrVal_2158) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) 0)))) is different from false [2024-11-17 00:50:17,091 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2158 (Array Int Int)) (|v_ULTIMATE.start_sll_update_at_~head#1.offset_96| Int) (v_ArrVal_2157 (Array Int Int))) (or (not (= v_ArrVal_2157 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_96| (select v_ArrVal_2157 |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|)))) (< |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_96|) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| v_ArrVal_2157) (select v_ArrVal_2157 (+ |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| 4)) v_ArrVal_2158) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4) 0)))) is different from false [2024-11-17 00:50:17,096 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 47 treesize of output 45 [2024-11-17 00:50:17,100 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:50:17,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:17,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 8 [2024-11-17 00:50:17,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:17,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2024-11-17 00:50:17,113 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 20 treesize of output 18 [2024-11-17 00:50:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 15 not checked. [2024-11-17 00:50:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57141323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:50:17,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:50:17,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 25] total 64 [2024-11-17 00:50:17,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074865909] [2024-11-17 00:50:17,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:50:17,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-17 00:50:17,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:50:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-17 00:50:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=3045, Unknown=58, NotChecked=702, Total=4032 [2024-11-17 00:50:17,280 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 64 states, 64 states have (on average 2.8125) internal successors, (180), 64 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:50:19,217 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2024-11-17 00:50:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-17 00:50:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 64 states have internal predecessors, (180), 0 states have call successors, (0), 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 [2024-11-17 00:50:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:50:19,218 INFO L225 Difference]: With dead ends: 104 [2024-11-17 00:50:19,218 INFO L226 Difference]: Without dead ends: 104 [2024-11-17 00:50:19,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=482, Invalid=5964, Unknown=58, NotChecked=978, Total=7482 [2024-11-17 00:50:19,219 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 75 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-17 00:50:19,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1290 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1683 Invalid, 0 Unknown, 465 Unchecked, 0.9s Time] [2024-11-17 00:50:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-17 00:50:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2024-11-17 00:50:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-11-17 00:50:19,220 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 79 [2024-11-17 00:50:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:50:19,220 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-11-17 00:50:19,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 64 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-11-17 00:50:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-17 00:50:19,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:50:19,221 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:50:19,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 00:50:19,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:50:19,422 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:50:19,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:50:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1790000314, now seen corresponding path program 1 times [2024-11-17 00:50:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:50:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339508456] [2024-11-17 00:50:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:50:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:50:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:50:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 00:50:20,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:50:20,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339508456] [2024-11-17 00:50:20,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339508456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:50:20,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963408576] [2024-11-17 00:50:20,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:50:20,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:50:20,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:50:20,443 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) [2024-11-17 00:50:20,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 00:50:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:50:20,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-17 00:50:20,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:50:20,870 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:50:20,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:50:20,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:50:21,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:50:21,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-17 00:50:21,388 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:50:21,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-17 00:50:21,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:50:21,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2024-11-17 00:50:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:50:21,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:50:22,064 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2268 (Array Int Int)) (v_ArrVal_2267 (Array Int Int))) (or (not (= (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| (select v_ArrVal_2267 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_2267)) (< (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2267))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2268)) |c_ULTIMATE.start_main_~s~0#1.base|) 4) |c_#StackHeapBarrier|))) is different from false [2024-11-17 00:50:22,082 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_103| Int) (v_ArrVal_2268 (Array Int Int)) (v_ArrVal_2267 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_2267) (select v_ArrVal_2267 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2268) |c_ULTIMATE.start_main_~s~0#1.base|) 4) |c_#StackHeapBarrier|) (not (= (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_103| (select v_ArrVal_2267 |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|)) v_ArrVal_2267)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|))) is different from false [2024-11-17 00:50:22,100 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_103| Int) (v_ArrVal_2268 (Array Int Int)) (v_ArrVal_2267 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base| v_ArrVal_2267) (select v_ArrVal_2267 (+ |c_ULTIMATE.start_sll_create_#res#1.offset| 4)) v_ArrVal_2268) |c_ULTIMATE.start_sll_create_#res#1.base|) 4) |c_#StackHeapBarrier|) (not (= v_ArrVal_2267 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_#res#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_103| (select v_ArrVal_2267 |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|)))) (< |c_ULTIMATE.start_sll_create_#res#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|))) is different from false [2024-11-17 00:50:22,112 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_103| Int) (v_ArrVal_2268 (Array Int Int)) (v_ArrVal_2267 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| v_ArrVal_2267) (select v_ArrVal_2267 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) v_ArrVal_2268) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|) (not (= v_ArrVal_2267 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_103| (select v_ArrVal_2267 |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|)))))) is different from false [2024-11-17 00:50:22,135 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_103| Int) (v_ArrVal_2268 (Array Int Int)) (v_ArrVal_2267 (Array Int Int))) (or (not (= v_ArrVal_2267 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_103| (select v_ArrVal_2267 |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|)))) (< (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| v_ArrVal_2267) (select v_ArrVal_2267 (+ |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| 4)) v_ArrVal_2268) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_103|))) is different from false [2024-11-17 00:50:22,143 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 44 treesize of output 42 [2024-11-17 00:50:22,156 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:50:22,164 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 69 treesize of output 67 [2024-11-17 00:50:22,210 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 [2024-11-17 00:50:22,408 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:50:22,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-17 00:50:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 12 not checked. [2024-11-17 00:50:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963408576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:50:22,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:50:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 24] total 55 [2024-11-17 00:50:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791841999] [2024-11-17 00:50:22,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:50:22,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-17 00:50:22,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:50:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-17 00:50:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2330, Unknown=82, NotChecked=510, Total=3080 [2024-11-17 00:50:22,468 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 56 states, 55 states have (on average 3.1272727272727274) internal successors, (172), 56 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:24,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:50:24,551 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2024-11-17 00:50:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 00:50:24,552 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 3.1272727272727274) internal successors, (172), 56 states have internal predecessors, (172), 0 states have call successors, (0), 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 80 [2024-11-17 00:50:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:50:24,552 INFO L225 Difference]: With dead ends: 102 [2024-11-17 00:50:24,552 INFO L226 Difference]: Without dead ends: 102 [2024-11-17 00:50:24,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=349, Invalid=4557, Unknown=84, NotChecked=710, Total=5700 [2024-11-17 00:50:24,553 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 96 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:50:24,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1259 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1682 Invalid, 0 Unknown, 369 Unchecked, 1.1s Time] [2024-11-17 00:50:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-17 00:50:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-11-17 00:50:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.065934065934066) 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) [2024-11-17 00:50:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-17 00:50:24,555 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 80 [2024-11-17 00:50:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:50:24,555 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-17 00:50:24,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 3.1272727272727274) internal successors, (172), 56 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:50:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-17 00:50:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-17 00:50:24,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:50:24,556 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:50:24,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 00:50:24,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:50:24,757 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:50:24,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:50:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash 993027455, now seen corresponding path program 2 times [2024-11-17 00:50:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:50:24,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965125615] [2024-11-17 00:50:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:50:24,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:50:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:50:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-17 00:50:26,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:50:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965125615] [2024-11-17 00:50:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965125615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:50:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390459573] [2024-11-17 00:50:26,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:50:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:50:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:50:26,499 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) [2024-11-17 00:50:26,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 00:50:26,701 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:50:26,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:50:26,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-17 00:50:26,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:50:26,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:50:26,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:50:26,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:50:26,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 00:50:26,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:50:26,997 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:50:26,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:50:27,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:50:27,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:50:27,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:50:27,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:50:27,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 00:50:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 00:50:27,534 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-17 00:50:27,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2024-11-17 00:50:27,558 INFO L349 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2024-11-17 00:50:27,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 36 [2024-11-17 00:50:28,159 INFO L349 Elim1Store]: treesize reduction 116, result has 43.4 percent of original size [2024-11-17 00:50:28,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 128 treesize of output 162 [2024-11-17 00:50:28,257 INFO L349 Elim1Store]: treesize reduction 108, result has 47.3 percent of original size [2024-11-17 00:50:28,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 129