./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.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 9e6ddc72db9996307e31b37c1f23ddad101cfdc849bb3a24fd3b76db809c7055 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:39:02,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:39:02,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:39:02,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:39:02,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:39:02,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:39:02,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:39:02,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:39:02,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:39:02,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:39:02,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:39:02,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:39:02,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:39:02,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:39:02,765 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:39:02,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:39:02,765 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:39:02,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:39:02,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:39:02,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:39:02,766 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:39:02,767 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:39:02,767 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:39:02,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:39:02,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:39:02,767 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:39:02,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:39:02,768 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:39:02,768 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:39:02,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:39:02,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:39:02,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:39:02,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:39:02,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:39:02,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:39:02,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:39:02,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:39:02,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:39:02,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:39:02,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:39:02,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:39:02,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:39:02,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e6ddc72db9996307e31b37c1f23ddad101cfdc849bb3a24fd3b76db809c7055 [2024-11-19 06:39:02,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:39:02,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:39:02,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:39:02,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:39:02,985 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:39:02,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2024-11-19 06:39:04,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:39:04,329 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:39:04,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2024-11-19 06:39:04,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e958b8ee/28a00294c69347c5850e9103863a5a0d/FLAG8824e0891 [2024-11-19 06:39:04,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e958b8ee/28a00294c69347c5850e9103863a5a0d [2024-11-19 06:39:04,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:39:04,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:39:04,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:39:04,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:39:04,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:39:04,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:39:04" (1/1) ... [2024-11-19 06:39:04,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc1260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:04, skipping insertion in model container [2024-11-19 06:39:04,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:39:04" (1/1) ... [2024-11-19 06:39:04,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:39:05,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:39:05,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:39:05,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:39:05,076 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:39:05,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05 WrapperNode [2024-11-19 06:39:05,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:39:05,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:39:05,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:39:05,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:39:05,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,134 INFO L138 Inliner]: procedures = 124, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2024-11-19 06:39:05,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:39:05,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:39:05,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:39:05,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:39:05,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,183 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-19 06:39:05,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:39:05,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:39:05,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:39:05,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:39:05,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (1/1) ... [2024-11-19 06:39:05,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:39:05,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:39:05,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 06:39:05,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 06:39:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-19 06:39:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-19 06:39:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:39:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:39:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:39:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:39:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:39:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:39:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:39:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 06:39:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:39:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 06:39:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:39:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:39:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:39:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:39:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:39:05,379 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:39:05,381 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:39:05,400 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-19 06:39:05,607 INFO L? ?]: Removed 80 outVars from TransFormulas that were not future-live. [2024-11-19 06:39:05,607 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:39:05,616 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:39:05,617 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 06:39:05,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:05 BoogieIcfgContainer [2024-11-19 06:39:05,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:39:05,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:39:05,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:39:05,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:39:05,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:39:04" (1/3) ... [2024-11-19 06:39:05,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6885a75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:39:05, skipping insertion in model container [2024-11-19 06:39:05,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:05" (2/3) ... [2024-11-19 06:39:05,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6885a75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:39:05, skipping insertion in model container [2024-11-19 06:39:05,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:05" (3/3) ... [2024-11-19 06:39:05,623 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_flag_1.i [2024-11-19 06:39:05,638 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:39:05,638 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2024-11-19 06:39:05,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:39:05,682 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;@ccbe650, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:39:05,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-11-19 06:39:05,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 92 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:39:05,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:05,690 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:39:05,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:05,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517928, now seen corresponding path program 1 times [2024-11-19 06:39:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:05,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673799451] [2024-11-19 06:39:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:05,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673799451] [2024-11-19 06:39:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673799451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:05,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:39:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087086399] [2024-11-19 06:39:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:05,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 06:39:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 06:39:05,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:39:05,832 INFO L87 Difference]: Start difference. First operand has 94 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 92 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:05,844 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2024-11-19 06:39:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 06:39:05,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-19 06:39:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:05,851 INFO L225 Difference]: With dead ends: 93 [2024-11-19 06:39:05,851 INFO L226 Difference]: Without dead ends: 87 [2024-11-19 06:39:05,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:39:05,854 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:05,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:39:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-19 06:39:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-19 06:39:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 47 states have (on average 2.0) internal successors, (94), 86 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) [2024-11-19 06:39:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2024-11-19 06:39:05,877 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 6 [2024-11-19 06:39:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:05,877 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2024-11-19 06:39:05,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2024-11-19 06:39:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 06:39:05,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:05,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:05,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:39:05,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:05,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 620871761, now seen corresponding path program 1 times [2024-11-19 06:39:05,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:05,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683490515] [2024-11-19 06:39:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:05,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:05,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683490515] [2024-11-19 06:39:05,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683490515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:05,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:39:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863201430] [2024-11-19 06:39:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:05,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:39:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:39:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:39:05,990 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:06,126 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-19 06:39:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:39:06,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-19 06:39:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:06,127 INFO L225 Difference]: With dead ends: 84 [2024-11-19 06:39:06,127 INFO L226 Difference]: Without dead ends: 84 [2024-11-19 06:39:06,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:39:06,128 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 105 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:06,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 53 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-19 06:39:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-19 06:39:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 79 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-19 06:39:06,134 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 8 [2024-11-19 06:39:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:06,134 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-19 06:39:06,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-19 06:39:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 06:39:06,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:06,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:06,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:39:06,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:06,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash 620871762, now seen corresponding path program 1 times [2024-11-19 06:39:06,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:06,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24254269] [2024-11-19 06:39:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:06,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24254269] [2024-11-19 06:39:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24254269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:06,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:39:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891896551] [2024-11-19 06:39:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:06,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:39:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:39:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:39:06,271 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:06,412 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2024-11-19 06:39:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:39:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-19 06:39:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:06,413 INFO L225 Difference]: With dead ends: 108 [2024-11-19 06:39:06,414 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 06:39:06,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:39:06,415 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 119 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:06,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 84 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 06:39:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-11-19 06:39:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 103 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) [2024-11-19 06:39:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2024-11-19 06:39:06,426 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 8 [2024-11-19 06:39:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:06,426 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2024-11-19 06:39:06,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,428 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2024-11-19 06:39:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:39:06,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:06,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:06,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:39:06,429 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:06,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1711952764, now seen corresponding path program 1 times [2024-11-19 06:39:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:06,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048993516] [2024-11-19 06:39:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:06,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048993516] [2024-11-19 06:39:06,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048993516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:06,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:06,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:39:06,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7052196] [2024-11-19 06:39:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:06,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:39:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:39:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:39:06,549 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:06,658 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2024-11-19 06:39:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:39:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 06:39:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:06,661 INFO L225 Difference]: With dead ends: 111 [2024-11-19 06:39:06,661 INFO L226 Difference]: Without dead ends: 111 [2024-11-19 06:39:06,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:39:06,662 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 19 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:06,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 259 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-19 06:39:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2024-11-19 06:39:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.518987341772152) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-19 06:39:06,669 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 17 [2024-11-19 06:39:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:06,670 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-19 06:39:06,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-19 06:39:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:39:06,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:06,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:06,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:39:06,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:06,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1529942363, now seen corresponding path program 1 times [2024-11-19 06:39:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651606757] [2024-11-19 06:39:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:06,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651606757] [2024-11-19 06:39:06,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651606757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:06,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:06,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:39:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322378821] [2024-11-19 06:39:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:06,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:39:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:39:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:39:06,762 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:06,848 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2024-11-19 06:39:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:39:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-11-19 06:39:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:06,849 INFO L225 Difference]: With dead ends: 111 [2024-11-19 06:39:06,849 INFO L226 Difference]: Without dead ends: 111 [2024-11-19 06:39:06,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:39:06,850 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:06,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 95 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-19 06:39:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2024-11-19 06:39:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2024-11-19 06:39:06,857 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 18 [2024-11-19 06:39:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:06,857 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2024-11-19 06:39:06,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2024-11-19 06:39:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:39:06,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:06,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:06,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:39:06,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:06,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash -42052461, now seen corresponding path program 1 times [2024-11-19 06:39:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:06,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55736184] [2024-11-19 06:39:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:07,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55736184] [2024-11-19 06:39:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55736184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:07,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:07,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:39:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078575801] [2024-11-19 06:39:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:07,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:39:07,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:39:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:39:07,021 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:07,144 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2024-11-19 06:39:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:39:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 06:39:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:07,145 INFO L225 Difference]: With dead ends: 122 [2024-11-19 06:39:07,145 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 06:39:07,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:39:07,146 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 37 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:07,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 246 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 06:39:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2024-11-19 06:39:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-11-19 06:39:07,154 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 19 [2024-11-19 06:39:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:07,154 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-11-19 06:39:07,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-11-19 06:39:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:39:07,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:07,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:07,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:39:07,155 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:07,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:07,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1395789581, now seen corresponding path program 1 times [2024-11-19 06:39:07,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114638769] [2024-11-19 06:39:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:07,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:07,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114638769] [2024-11-19 06:39:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114638769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:07,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:39:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011020161] [2024-11-19 06:39:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:07,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:39:07,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:39:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:39:07,244 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:07,354 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2024-11-19 06:39:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:39:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 [2024-11-19 06:39:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:07,356 INFO L225 Difference]: With dead ends: 140 [2024-11-19 06:39:07,356 INFO L226 Difference]: Without dead ends: 136 [2024-11-19 06:39:07,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:39:07,357 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 45 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:07,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 198 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-19 06:39:07,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 114. [2024-11-19 06:39:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 113 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-19 06:39:07,366 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 20 [2024-11-19 06:39:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:07,366 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-19 06:39:07,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-19 06:39:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:39:07,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:07,370 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:07,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:39:07,371 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:07,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1499534887, now seen corresponding path program 1 times [2024-11-19 06:39:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879020240] [2024-11-19 06:39:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:07,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879020240] [2024-11-19 06:39:07,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879020240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:07,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:07,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:39:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166118424] [2024-11-19 06:39:07,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:07,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:39:07,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:39:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:39:07,496 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:07,621 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-19 06:39:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:39:07,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 06:39:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:07,621 INFO L225 Difference]: With dead ends: 116 [2024-11-19 06:39:07,621 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 06:39:07,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:39:07,622 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 35 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:07,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 164 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 06:39:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-19 06:39:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-19 06:39:07,630 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 21 [2024-11-19 06:39:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:07,630 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-19 06:39:07,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-19 06:39:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:39:07,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:07,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:07,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:39:07,631 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:07,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:07,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1499534886, now seen corresponding path program 1 times [2024-11-19 06:39:07,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:07,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053592676] [2024-11-19 06:39:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053592676] [2024-11-19 06:39:07,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053592676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:07,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:07,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:39:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369285015] [2024-11-19 06:39:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:07,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:39:07,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:39:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:39:07,808 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:07,958 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2024-11-19 06:39:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:39:07,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 06:39:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:07,959 INFO L225 Difference]: With dead ends: 104 [2024-11-19 06:39:07,959 INFO L226 Difference]: Without dead ends: 104 [2024-11-19 06:39:07,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:39:07,960 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 12 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:07,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 228 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-19 06:39:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2024-11-19 06:39:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 93 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) [2024-11-19 06:39:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2024-11-19 06:39:07,968 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 21 [2024-11-19 06:39:07,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:07,968 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2024-11-19 06:39:07,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2024-11-19 06:39:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:39:07,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:07,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:07,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:39:07,969 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:07,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 37796891, now seen corresponding path program 1 times [2024-11-19 06:39:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929722724] [2024-11-19 06:39:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929722724] [2024-11-19 06:39:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929722724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:08,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:39:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352385445] [2024-11-19 06:39:08,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:08,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:39:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:39:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:39:08,207 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2024-11-19 06:39:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:08,323 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2024-11-19 06:39:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:39:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 22 [2024-11-19 06:39:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:08,324 INFO L225 Difference]: With dead ends: 108 [2024-11-19 06:39:08,324 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 06:39:08,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:39:08,325 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 108 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:08,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 182 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 06:39:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2024-11-19 06:39:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-19 06:39:08,330 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 22 [2024-11-19 06:39:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:08,330 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-19 06:39:08,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2024-11-19 06:39:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-19 06:39:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:39:08,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:08,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:08,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:39:08,332 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:08,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash -778213877, now seen corresponding path program 1 times [2024-11-19 06:39:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:08,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539962589] [2024-11-19 06:39:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539962589] [2024-11-19 06:39:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539962589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:39:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022480584] [2024-11-19 06:39:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:39:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:39:08,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:39:08,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:39:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:08,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-19 06:39:08,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:39:08,910 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 [2024-11-19 06:39:09,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:39:09,007 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 22 treesize of output 21 [2024-11-19 06:39:09,047 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:39:09,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:39:09,099 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 [2024-11-19 06:39:09,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:39:09,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:39:09,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-19 06:39:09,144 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 [2024-11-19 06:39:09,206 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 19 [2024-11-19 06:39:09,218 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 19 [2024-11-19 06:39:09,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:09,274 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 11 [2024-11-19 06:39:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:09,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:39:09,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:09,672 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2024-11-19 06:39:09,693 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-19 06:39:09,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 46 [2024-11-19 06:39:09,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 06:39:09,706 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 06:39:09,706 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 [2024-11-19 06:39:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022480584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:39:09,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:39:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-19 06:39:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574643159] [2024-11-19 06:39:09,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:39:09,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 06:39:09,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 06:39:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1127, Unknown=13, NotChecked=0, Total=1332 [2024-11-19 06:39:09,764 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:10,399 INFO L93 Difference]: Finished difference Result 169 states and 193 transitions. [2024-11-19 06:39:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:39:10,400 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-19 06:39:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:10,402 INFO L225 Difference]: With dead ends: 169 [2024-11-19 06:39:10,402 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 06:39:10,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=344, Invalid=1713, Unknown=13, NotChecked=0, Total=2070 [2024-11-19 06:39:10,403 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 321 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:10,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 730 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:39:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 06:39:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 105. [2024-11-19 06:39:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 104 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2024-11-19 06:39:10,406 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 32 [2024-11-19 06:39:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:10,407 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2024-11-19 06:39:10,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2024-11-19 06:39:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:39:10,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:10,409 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:10,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 06:39:10,622 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,SelfDestructingSolverStorable10 [2024-11-19 06:39:10,623 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:10,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1074038507, now seen corresponding path program 1 times [2024-11-19 06:39:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817294111] [2024-11-19 06:39:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817294111] [2024-11-19 06:39:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817294111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:39:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121411575] [2024-11-19 06:39:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:10,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:39:10,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:39:10,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:39:10,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:39:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:10,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 06:39:10,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:39:10,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:39:10,967 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:39:10,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:39:10,989 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 [2024-11-19 06:39:10,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:39:10,995 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 11 [2024-11-19 06:39:11,002 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 [2024-11-19 06:39:11,017 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 [2024-11-19 06:39:11,022 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 [2024-11-19 06:39:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:11,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:39:11,042 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_273) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2024-11-19 06:39:11,056 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_273) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2024-11-19 06:39:11,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:11,136 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 2 case distinctions, treesize of input 23 treesize of output 29 [2024-11-19 06:39:11,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:11,143 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 30 treesize of output 33 [2024-11-19 06:39:11,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-19 06:39:11,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:11,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2024-11-19 06:39:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-19 06:39:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121411575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:39:11,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:39:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 18 [2024-11-19 06:39:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038513491] [2024-11-19 06:39:11,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:39:11,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:39:11,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:11,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:39:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=185, Unknown=12, NotChecked=58, Total=306 [2024-11-19 06:39:11,254 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:11,600 INFO L93 Difference]: Finished difference Result 172 states and 196 transitions. [2024-11-19 06:39:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:39:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-19 06:39:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:11,601 INFO L225 Difference]: With dead ends: 172 [2024-11-19 06:39:11,601 INFO L226 Difference]: Without dead ends: 172 [2024-11-19 06:39:11,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=317, Unknown=12, NotChecked=78, Total=506 [2024-11-19 06:39:11,602 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 100 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 282 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:11,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 601 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 537 Invalid, 0 Unknown, 282 Unchecked, 0.3s Time] [2024-11-19 06:39:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-19 06:39:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 107. [2024-11-19 06:39:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 106 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2024-11-19 06:39:11,604 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 32 [2024-11-19 06:39:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:11,604 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2024-11-19 06:39:11,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:39:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2024-11-19 06:39:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:39:11,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:11,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:39:11,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:39:11,809 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 [2024-11-19 06:39:11,810 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-19 06:39:11,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025696, now seen corresponding path program 1 times [2024-11-19 06:39:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956979379] [2024-11-19 06:39:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:12,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956979379] [2024-11-19 06:39:12,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956979379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:39:12,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372172749] [2024-11-19 06:39:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:12,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:39:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:39:12,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:39:12,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:39:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:12,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 06:39:12,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:39:12,225 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-19 06:39:12,225 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 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-19 06:39:12,256 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 [2024-11-19 06:39:12,343 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-19 06:39:12,343 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 1 case distinctions, treesize of input 39 treesize of output 30 [2024-11-19 06:39:12,358 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-19 06:39:12,358 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 [2024-11-19 06:39:12,420 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 [2024-11-19 06:39:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:39:12,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:39:12,497 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_346) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2024-11-19 06:39:12,507 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_346) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2024-11-19 06:39:12,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:12,536 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 24 treesize of output 25 [2024-11-19 06:39:12,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:12,545 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 40 treesize of output 39 [2024-11-19 06:39:12,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-19 06:39:13,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:13,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 150 treesize of output 748