./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/lockfree-3.0.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/memsafety/lockfree-3.0.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 ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:09:20,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:09:21,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:09:21,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:09:21,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:09:21,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:09:21,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:09:21,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:09:21,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:09:21,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:09:21,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:09:21,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:09:21,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:09:21,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:09:21,084 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:09:21,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:09:21,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:09:21,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:09:21,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:09:21,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:09:21,085 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:09:21,090 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:09:21,090 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:09:21,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:09:21,090 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:09:21,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:09:21,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:09:21,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:09:21,091 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:09:21,092 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:09:21,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:09:21,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:09:21,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:09:21,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:09:21,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:09:21,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:09:21,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:09:21,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:09:21,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:09:21,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:09:21,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:09:21,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:09:21,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea [2024-11-10 15:09:21,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:09:21,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:09:21,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:09:21,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:09:21,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:09:21,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.0.i [2024-11-10 15:09:22,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:09:23,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:09:23,171 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2024-11-10 15:09:23,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/193cef248/6c45e6e361a14dfebe603bc9b4247086/FLAG10946ca6f [2024-11-10 15:09:23,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/193cef248/6c45e6e361a14dfebe603bc9b4247086 [2024-11-10 15:09:23,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:09:23,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:09:23,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:09:23,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:09:23,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:09:23,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ee6139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23, skipping insertion in model container [2024-11-10 15:09:23,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:09:23,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:09:23,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:09:23,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:09:23,629 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:09:23,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23 WrapperNode [2024-11-10 15:09:23,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:09:23,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:09:23,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:09:23,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:09:23,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,673 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-11-10 15:09:23,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:09:23,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:09:23,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:09:23,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:09:23,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,713 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-10 15:09:23,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,721 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:09:23,728 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:09:23,728 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:09:23,728 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:09:23,729 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (1/1) ... [2024-11-10 15:09:23,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:09:23,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:23,769 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) [2024-11-10 15:09:23,772 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 [2024-11-10 15:09:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:09:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:09:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:09:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:09:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:09:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:09:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 15:09:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 15:09:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 15:09:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 15:09:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:09:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:09:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:09:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:09:23,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:09:23,967 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:09:23,970 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:09:24,282 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-10 15:09:24,282 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:09:24,296 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:09:24,296 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:09:24,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:09:24 BoogieIcfgContainer [2024-11-10 15:09:24,297 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:09:24,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:09:24,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:09:24,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:09:24,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:09:23" (1/3) ... [2024-11-10 15:09:24,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c9b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:09:24, skipping insertion in model container [2024-11-10 15:09:24,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:09:23" (2/3) ... [2024-11-10 15:09:24,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c9b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:09:24, skipping insertion in model container [2024-11-10 15:09:24,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:09:24" (3/3) ... [2024-11-10 15:09:24,312 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.0.i [2024-11-10 15:09:24,332 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:09:24,332 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-10 15:09:24,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:09:24,405 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;@3779129e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:09:24,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-10 15:09:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 65 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:09:24,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:24,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:09:24,420 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:24,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash 111885212, now seen corresponding path program 1 times [2024-11-10 15:09:24,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:24,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071713032] [2024-11-10 15:09:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:24,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071713032] [2024-11-10 15:09:24,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071713032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:24,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:24,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:09:24,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346788262] [2024-11-10 15:09:24,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:24,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 15:09:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 15:09:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:09:24,659 INFO L87 Difference]: Start difference. First operand has 66 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 65 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-10 15:09:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:24,674 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2024-11-10 15:09:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 15:09:24,675 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 [2024-11-10 15:09:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:24,682 INFO L225 Difference]: With dead ends: 66 [2024-11-10 15:09:24,682 INFO L226 Difference]: Without dead ends: 63 [2024-11-10 15:09:24,683 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 [2024-11-10 15:09:24,686 INFO L432 NwaCegarLoop]: 83 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, 83 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 [2024-11-10 15:09:24,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-10 15:09:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-10 15:09:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2024-11-10 15:09:24,738 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 6 [2024-11-10 15:09:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:24,738 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2024-11-10 15:09:24,739 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) [2024-11-10 15:09:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2024-11-10 15:09:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:09:24,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:24,740 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:24,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:09:24,740 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:24,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash 209491885, now seen corresponding path program 1 times [2024-11-10 15:09:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:24,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727992091] [2024-11-10 15:09:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:24,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727992091] [2024-11-10 15:09:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727992091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:09:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409314399] [2024-11-10 15:09:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:24,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:09:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:09:24,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:24,945 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-10 15:09:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:25,057 INFO L93 Difference]: Finished difference Result 114 states and 148 transitions. [2024-11-10 15:09:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:09:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2024-11-10 15:09:25,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:25,062 INFO L225 Difference]: With dead ends: 114 [2024-11-10 15:09:25,063 INFO L226 Difference]: Without dead ends: 114 [2024-11-10 15:09:25,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,066 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 70 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:25,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 177 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-10 15:09:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2024-11-10 15:09:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 88 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 131 transitions. [2024-11-10 15:09:25,082 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 131 transitions. Word has length 8 [2024-11-10 15:09:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:25,082 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 131 transitions. [2024-11-10 15:09:25,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-10 15:09:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 131 transitions. [2024-11-10 15:09:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:09:25,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:25,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:25,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:09:25,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:25,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash 209491886, now seen corresponding path program 1 times [2024-11-10 15:09:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934394225] [2024-11-10 15:09:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:25,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934394225] [2024-11-10 15:09:25,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934394225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:25,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:25,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:09:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897875262] [2024-11-10 15:09:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:25,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:09:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:09:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,263 INFO L87 Difference]: Start difference. First operand 89 states and 131 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-10 15:09:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:25,341 INFO L93 Difference]: Finished difference Result 138 states and 197 transitions. [2024-11-10 15:09:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:09:25,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2024-11-10 15:09:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:25,344 INFO L225 Difference]: With dead ends: 138 [2024-11-10 15:09:25,344 INFO L226 Difference]: Without dead ends: 138 [2024-11-10 15:09:25,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,346 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 69 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:25,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 187 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-10 15:09:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2024-11-10 15:09:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 114 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 180 transitions. [2024-11-10 15:09:25,370 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 180 transitions. Word has length 8 [2024-11-10 15:09:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:25,370 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 180 transitions. [2024-11-10 15:09:25,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-10 15:09:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 180 transitions. [2024-11-10 15:09:25,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:09:25,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:25,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:25,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:09:25,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:25,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:25,372 INFO L85 PathProgramCache]: Analyzing trace with hash 209385696, now seen corresponding path program 1 times [2024-11-10 15:09:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173512222] [2024-11-10 15:09:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:25,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173512222] [2024-11-10 15:09:25,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173512222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:25,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:25,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:09:25,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302715297] [2024-11-10 15:09:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:25,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:09:25,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:09:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,438 INFO L87 Difference]: Start difference. First operand 115 states and 180 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2024-11-10 15:09:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:25,470 INFO L93 Difference]: Finished difference Result 213 states and 343 transitions. [2024-11-10 15:09:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:09:25,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2024-11-10 15:09:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:25,472 INFO L225 Difference]: With dead ends: 213 [2024-11-10 15:09:25,473 INFO L226 Difference]: Without dead ends: 213 [2024-11-10 15:09:25,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,474 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 57 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:25,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 130 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-10 15:09:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 191. [2024-11-10 15:09:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 175 states have (on average 1.822857142857143) internal successors, (319), 190 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 319 transitions. [2024-11-10 15:09:25,487 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 319 transitions. Word has length 8 [2024-11-10 15:09:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:25,487 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 319 transitions. [2024-11-10 15:09:25,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2024-11-10 15:09:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 319 transitions. [2024-11-10 15:09:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 15:09:25,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:25,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:25,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:09:25,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:25,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2095684464, now seen corresponding path program 1 times [2024-11-10 15:09:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:25,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085727923] [2024-11-10 15:09:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:25,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085727923] [2024-11-10 15:09:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085727923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:25,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:09:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997260147] [2024-11-10 15:09:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:25,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:09:25,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:09:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:09:25,581 INFO L87 Difference]: Start difference. First operand 191 states and 319 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:25,658 INFO L93 Difference]: Finished difference Result 360 states and 572 transitions. [2024-11-10 15:09:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:09:25,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-10 15:09:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:25,661 INFO L225 Difference]: With dead ends: 360 [2024-11-10 15:09:25,661 INFO L226 Difference]: Without dead ends: 360 [2024-11-10 15:09:25,662 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 [2024-11-10 15:09:25,663 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 55 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:25,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 261 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-10 15:09:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 329. [2024-11-10 15:09:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 313 states have (on average 1.7476038338658146) internal successors, (547), 328 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 547 transitions. [2024-11-10 15:09:25,699 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 547 transitions. Word has length 9 [2024-11-10 15:09:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:25,700 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 547 transitions. [2024-11-10 15:09:25,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 547 transitions. [2024-11-10 15:09:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 15:09:25,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:25,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:25,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:09:25,702 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:25,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash -500666061, now seen corresponding path program 1 times [2024-11-10 15:09:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143573778] [2024-11-10 15:09:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:25,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:25,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143573778] [2024-11-10 15:09:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143573778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:25,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:25,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:09:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638310894] [2024-11-10 15:09:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:25,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:09:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:09:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:09:25,766 INFO L87 Difference]: Start difference. First operand 329 states and 547 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:25,818 INFO L93 Difference]: Finished difference Result 590 states and 912 transitions. [2024-11-10 15:09:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:09:25,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-10 15:09:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:25,821 INFO L225 Difference]: With dead ends: 590 [2024-11-10 15:09:25,821 INFO L226 Difference]: Without dead ends: 590 [2024-11-10 15:09:25,822 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 [2024-11-10 15:09:25,823 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:25,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 265 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-10 15:09:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 555. [2024-11-10 15:09:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 539 states have (on average 1.634508348794063) internal successors, (881), 554 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 881 transitions. [2024-11-10 15:09:25,889 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 881 transitions. Word has length 10 [2024-11-10 15:09:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:25,890 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 881 transitions. [2024-11-10 15:09:25,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 881 transitions. [2024-11-10 15:09:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 15:09:25,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:25,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:25,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 15:09:25,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:25,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -643849323, now seen corresponding path program 1 times [2024-11-10 15:09:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:25,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483969446] [2024-11-10 15:09:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:25,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483969446] [2024-11-10 15:09:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483969446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:25,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:09:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840788027] [2024-11-10 15:09:25,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:25,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:09:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:09:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,935 INFO L87 Difference]: Start difference. First operand 555 states and 881 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:25,992 INFO L93 Difference]: Finished difference Result 579 states and 899 transitions. [2024-11-10 15:09:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:09:25,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-10 15:09:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:25,995 INFO L225 Difference]: With dead ends: 579 [2024-11-10 15:09:25,996 INFO L226 Difference]: Without dead ends: 574 [2024-11-10 15:09:25,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:09:25,998 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 62 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:26,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 123 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-10 15:09:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 557. [2024-11-10 15:09:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 541 states have (on average 1.6173752310536045) internal successors, (875), 556 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 875 transitions. [2024-11-10 15:09:26,018 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 875 transitions. Word has length 10 [2024-11-10 15:09:26,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:26,018 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 875 transitions. [2024-11-10 15:09:26,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 875 transitions. [2024-11-10 15:09:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 15:09:26,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:26,021 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:26,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 15:09:26,022 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:26,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1277442534, now seen corresponding path program 1 times [2024-11-10 15:09:26,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:26,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308500484] [2024-11-10 15:09:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308500484] [2024-11-10 15:09:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308500484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:26,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:26,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:09:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875320507] [2024-11-10 15:09:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:26,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:09:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:09:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:09:26,149 INFO L87 Difference]: Start difference. First operand 557 states and 875 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:26,206 INFO L93 Difference]: Finished difference Result 889 states and 1401 transitions. [2024-11-10 15:09:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:09:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-10 15:09:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:26,211 INFO L225 Difference]: With dead ends: 889 [2024-11-10 15:09:26,212 INFO L226 Difference]: Without dead ends: 889 [2024-11-10 15:09:26,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:09:26,213 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 49 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:26,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 329 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-10 15:09:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 847. [2024-11-10 15:09:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 831 states have (on average 1.618531889290012) internal successors, (1345), 846 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1345 transitions. [2024-11-10 15:09:26,235 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1345 transitions. Word has length 16 [2024-11-10 15:09:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:26,237 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1345 transitions. [2024-11-10 15:09:26,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1345 transitions. [2024-11-10 15:09:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 15:09:26,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:26,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:26,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 15:09:26,240 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:26,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2130021081, now seen corresponding path program 1 times [2024-11-10 15:09:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622169444] [2024-11-10 15:09:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:26,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622169444] [2024-11-10 15:09:26,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622169444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464990868] [2024-11-10 15:09:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:26,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:26,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:26,338 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) [2024-11-10 15:09:26,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:09:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:26,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:09:26,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:26,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:26,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464990868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:26,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:26,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-11-10 15:09:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616205145] [2024-11-10 15:09:26,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:26,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:09:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:09:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:09:26,567 INFO L87 Difference]: Start difference. First operand 847 states and 1345 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:26,673 INFO L93 Difference]: Finished difference Result 1429 states and 2155 transitions. [2024-11-10 15:09:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:09:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-10 15:09:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:26,679 INFO L225 Difference]: With dead ends: 1429 [2024-11-10 15:09:26,679 INFO L226 Difference]: Without dead ends: 1429 [2024-11-10 15:09:26,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:09:26,680 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 239 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:26,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 305 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2024-11-10 15:09:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1307. [2024-11-10 15:09:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1291 states have (on average 1.5623547637490318) internal successors, (2017), 1306 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2017 transitions. [2024-11-10 15:09:26,726 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2017 transitions. Word has length 16 [2024-11-10 15:09:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:26,726 INFO L471 AbstractCegarLoop]: Abstraction has 1307 states and 2017 transitions. [2024-11-10 15:09:26,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2017 transitions. [2024-11-10 15:09:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 15:09:26,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:26,727 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:26,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:26,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:26,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:26,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2107075741, now seen corresponding path program 1 times [2024-11-10 15:09:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560534438] [2024-11-10 15:09:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:27,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:27,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560534438] [2024-11-10 15:09:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560534438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:27,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318968189] [2024-11-10 15:09:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:27,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:27,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:27,004 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) [2024-11-10 15:09:27,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:09:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:27,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:09:27,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:27,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:27,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318968189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:27,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:27,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-10 15:09:27,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640018941] [2024-11-10 15:09:27,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:27,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:09:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:09:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:09:27,152 INFO L87 Difference]: Start difference. First operand 1307 states and 2017 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:27,195 INFO L93 Difference]: Finished difference Result 1307 states and 1981 transitions. [2024-11-10 15:09:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:09:27,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2024-11-10 15:09:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:27,200 INFO L225 Difference]: With dead ends: 1307 [2024-11-10 15:09:27,200 INFO L226 Difference]: Without dead ends: 1307 [2024-11-10 15:09:27,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:09:27,201 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 113 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:27,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 301 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2024-11-10 15:09:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1295. [2024-11-10 15:09:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1279 states have (on average 1.5441751368256451) internal successors, (1975), 1294 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1975 transitions. [2024-11-10 15:09:27,226 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1975 transitions. Word has length 18 [2024-11-10 15:09:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:27,226 INFO L471 AbstractCegarLoop]: Abstraction has 1295 states and 1975 transitions. [2024-11-10 15:09:27,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1975 transitions. [2024-11-10 15:09:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-10 15:09:27,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:27,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:27,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:09:27,428 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,SelfDestructingSolverStorable9 [2024-11-10 15:09:27,428 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:27,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -145012974, now seen corresponding path program 1 times [2024-11-10 15:09:27,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:27,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949544850] [2024-11-10 15:09:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:09:27,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:27,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949544850] [2024-11-10 15:09:27,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949544850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:27,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:09:27,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:09:27,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978326720] [2024-11-10 15:09:27,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:27,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:09:27,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:27,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:09:27,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:09:27,471 INFO L87 Difference]: Start difference. First operand 1295 states and 1975 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 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) [2024-11-10 15:09:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:27,495 INFO L93 Difference]: Finished difference Result 554 states and 813 transitions. [2024-11-10 15:09:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:09:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 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 [2024-11-10 15:09:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:27,498 INFO L225 Difference]: With dead ends: 554 [2024-11-10 15:09:27,498 INFO L226 Difference]: Without dead ends: 554 [2024-11-10 15:09:27,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:09:27,498 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 48 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:27,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 173 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-10 15:09:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 538. [2024-11-10 15:09:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 526 states have (on average 1.526615969581749) internal successors, (803), 537 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 803 transitions. [2024-11-10 15:09:27,508 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 803 transitions. Word has length 20 [2024-11-10 15:09:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:27,509 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 803 transitions. [2024-11-10 15:09:27,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 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) [2024-11-10 15:09:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 803 transitions. [2024-11-10 15:09:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 15:09:27,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:27,510 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:27,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 15:09:27,510 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:27,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1710096922, now seen corresponding path program 1 times [2024-11-10 15:09:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:27,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163223424] [2024-11-10 15:09:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:27,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:27,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:27,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163223424] [2024-11-10 15:09:27,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163223424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:27,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549343687] [2024-11-10 15:09:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:27,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:27,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:27,583 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) [2024-11-10 15:09:27,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:09:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:27,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:09:27,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:27,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549343687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:27,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-10 15:09:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421867554] [2024-11-10 15:09:27,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:27,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:09:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:09:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:09:27,809 INFO L87 Difference]: Start difference. First operand 538 states and 803 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:27,893 INFO L93 Difference]: Finished difference Result 1586 states and 2339 transitions. [2024-11-10 15:09:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:09:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-10 15:09:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:27,899 INFO L225 Difference]: With dead ends: 1586 [2024-11-10 15:09:27,900 INFO L226 Difference]: Without dead ends: 1586 [2024-11-10 15:09:27,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:09:27,900 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 183 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:27,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 164 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-11-10 15:09:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1520. [2024-11-10 15:09:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1508 states have (on average 1.5152519893899203) internal successors, (2285), 1519 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2285 transitions. [2024-11-10 15:09:27,925 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2285 transitions. Word has length 24 [2024-11-10 15:09:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:27,927 INFO L471 AbstractCegarLoop]: Abstraction has 1520 states and 2285 transitions. [2024-11-10 15:09:27,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2285 transitions. [2024-11-10 15:09:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 15:09:27,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:27,928 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:27,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:28,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:28,129 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:28,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1498865191, now seen corresponding path program 1 times [2024-11-10 15:09:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163818755] [2024-11-10 15:09:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:09:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163818755] [2024-11-10 15:09:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163818755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048135215] [2024-11-10 15:09:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:28,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:28,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:28,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:28,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:09:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:28,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 15:09:28,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:09:28,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:09:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048135215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:28,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2024-11-10 15:09:28,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431062698] [2024-11-10 15:09:28,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:28,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:09:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:09:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:09:28,351 INFO L87 Difference]: Start difference. First operand 1520 states and 2285 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:28,441 INFO L93 Difference]: Finished difference Result 401 states and 564 transitions. [2024-11-10 15:09:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:09:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-10 15:09:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:28,442 INFO L225 Difference]: With dead ends: 401 [2024-11-10 15:09:28,442 INFO L226 Difference]: Without dead ends: 401 [2024-11-10 15:09:28,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:09:28,443 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 66 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:28,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 419 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-10 15:09:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 328. [2024-11-10 15:09:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 316 states have (on average 1.4715189873417722) internal successors, (465), 327 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 465 transitions. [2024-11-10 15:09:28,451 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 465 transitions. Word has length 26 [2024-11-10 15:09:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:28,451 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 465 transitions. [2024-11-10 15:09:28,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 465 transitions. [2024-11-10 15:09:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 15:09:28,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:28,452 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:28,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:09:28,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:28,653 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:28,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1495111659, now seen corresponding path program 1 times [2024-11-10 15:09:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377966852] [2024-11-10 15:09:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377966852] [2024-11-10 15:09:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377966852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807070325] [2024-11-10 15:09:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:28,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:28,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:28,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:09:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:28,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:09:28,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:28,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:28,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807070325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:28,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:28,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-10 15:09:28,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42911264] [2024-11-10 15:09:28,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:28,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:09:28,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:28,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:09:28,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:09:28,903 INFO L87 Difference]: Start difference. First operand 328 states and 465 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:29,052 INFO L93 Difference]: Finished difference Result 949 states and 1293 transitions. [2024-11-10 15:09:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:09:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-10 15:09:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:29,056 INFO L225 Difference]: With dead ends: 949 [2024-11-10 15:09:29,056 INFO L226 Difference]: Without dead ends: 949 [2024-11-10 15:09:29,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:09:29,057 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 271 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:29,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 504 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-11-10 15:09:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 844. [2024-11-10 15:09:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 832 states have (on average 1.4459134615384615) internal successors, (1203), 843 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1203 transitions. [2024-11-10 15:09:29,075 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1203 transitions. Word has length 29 [2024-11-10 15:09:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:29,076 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 1203 transitions. [2024-11-10 15:09:29,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1203 transitions. [2024-11-10 15:09:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 15:09:29,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:29,079 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:29,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:29,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 15:09:29,284 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:29,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1048059043, now seen corresponding path program 1 times [2024-11-10 15:09:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8975827] [2024-11-10 15:09:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 15:09:29,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8975827] [2024-11-10 15:09:29,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8975827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794272498] [2024-11-10 15:09:29,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:29,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:29,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:29,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:29,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:09:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:29,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:09:29,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-10 15:09:29,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-10 15:09:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794272498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:29,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:29,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2024-11-10 15:09:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944058735] [2024-11-10 15:09:29,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:29,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:09:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:09:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:09:29,689 INFO L87 Difference]: Start difference. First operand 844 states and 1203 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:31,211 INFO L93 Difference]: Finished difference Result 2575 states and 3472 transitions. [2024-11-10 15:09:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-10 15:09:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 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 51 [2024-11-10 15:09:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:31,218 INFO L225 Difference]: With dead ends: 2575 [2024-11-10 15:09:31,218 INFO L226 Difference]: Without dead ends: 2575 [2024-11-10 15:09:31,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=881, Invalid=3675, Unknown=0, NotChecked=0, Total=4556 [2024-11-10 15:09:31,221 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 859 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:31,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 764 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 15:09:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2024-11-10 15:09:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 1953. [2024-11-10 15:09:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1942 states have (on average 1.448506694129763) internal successors, (2813), 1952 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2813 transitions. [2024-11-10 15:09:31,261 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2813 transitions. Word has length 51 [2024-11-10 15:09:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:31,261 INFO L471 AbstractCegarLoop]: Abstraction has 1953 states and 2813 transitions. [2024-11-10 15:09:31,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2813 transitions. [2024-11-10 15:09:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-10 15:09:31,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:31,262 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:31,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:09:31,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 15:09:31,463 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:31,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1693288630, now seen corresponding path program 1 times [2024-11-10 15:09:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:31,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311348973] [2024-11-10 15:09:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:09:31,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311348973] [2024-11-10 15:09:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311348973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084008636] [2024-11-10 15:09:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:31,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:31,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:31,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:31,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:09:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:31,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 15:09:31,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:31,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:09:31,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084008636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:31,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2024-11-10 15:09:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001364602] [2024-11-10 15:09:31,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:31,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:09:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:31,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:09:31,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:09:31,931 INFO L87 Difference]: Start difference. First operand 1953 states and 2813 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:32,214 INFO L93 Difference]: Finished difference Result 3769 states and 5394 transitions. [2024-11-10 15:09:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 15:09:32,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-10 15:09:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:32,228 INFO L225 Difference]: With dead ends: 3769 [2024-11-10 15:09:32,228 INFO L226 Difference]: Without dead ends: 3769 [2024-11-10 15:09:32,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2024-11-10 15:09:32,229 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 438 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:32,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 724 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2024-11-10 15:09:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 2955. [2024-11-10 15:09:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2944 states have (on average 1.500679347826087) internal successors, (4418), 2954 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4418 transitions. [2024-11-10 15:09:32,295 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4418 transitions. Word has length 53 [2024-11-10 15:09:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:32,296 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 4418 transitions. [2024-11-10 15:09:32,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4418 transitions. [2024-11-10 15:09:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-10 15:09:32,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:32,297 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:32,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 15:09:32,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:32,498 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:32,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -540574086, now seen corresponding path program 1 times [2024-11-10 15:09:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439389038] [2024-11-10 15:09:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:32,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 15:09:32,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439389038] [2024-11-10 15:09:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439389038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318790157] [2024-11-10 15:09:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:32,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:32,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:32,692 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:32,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:09:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:32,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:09:32,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:09:32,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:09:32,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318790157] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:32,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:09:32,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-10 15:09:32,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572154220] [2024-11-10 15:09:32,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:32,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:09:32,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:32,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:09:32,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:09:32,936 INFO L87 Difference]: Start difference. First operand 2955 states and 4418 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:33,036 INFO L93 Difference]: Finished difference Result 4910 states and 7198 transitions. [2024-11-10 15:09:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:09:33,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 61 [2024-11-10 15:09:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:33,052 INFO L225 Difference]: With dead ends: 4910 [2024-11-10 15:09:33,052 INFO L226 Difference]: Without dead ends: 4910 [2024-11-10 15:09:33,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:09:33,053 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 124 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:33,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 283 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-11-10 15:09:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 4779. [2024-11-10 15:09:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4768 states have (on average 1.483221476510067) internal successors, (7072), 4778 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 7072 transitions. [2024-11-10 15:09:33,132 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 7072 transitions. Word has length 61 [2024-11-10 15:09:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:33,133 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 7072 transitions. [2024-11-10 15:09:33,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 7072 transitions. [2024-11-10 15:09:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-10 15:09:33,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:33,134 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:33,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 15:09:33,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 15:09:33,336 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:33,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2022866952, now seen corresponding path program 1 times [2024-11-10 15:09:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496985467] [2024-11-10 15:09:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 15:09:33,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496985467] [2024-11-10 15:09:33,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496985467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370717124] [2024-11-10 15:09:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:33,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:33,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:33,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:33,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 15:09:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:33,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 15:09:33,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:09:33,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:09:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370717124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:33,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:33,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2024-11-10 15:09:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433414463] [2024-11-10 15:09:33,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:33,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 15:09:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 15:09:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:09:33,761 INFO L87 Difference]: Start difference. First operand 4779 states and 7072 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:34,227 INFO L93 Difference]: Finished difference Result 8445 states and 12126 transitions. [2024-11-10 15:09:34,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 15:09:34,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-10 15:09:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:34,255 INFO L225 Difference]: With dead ends: 8445 [2024-11-10 15:09:34,255 INFO L226 Difference]: Without dead ends: 8445 [2024-11-10 15:09:34,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 15:09:34,257 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 285 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:34,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 969 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:09:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8445 states. [2024-11-10 15:09:34,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8445 to 4948. [2024-11-10 15:09:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4937 states have (on average 1.4652623050435487) internal successors, (7234), 4947 states have internal predecessors, (7234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 7234 transitions. [2024-11-10 15:09:34,384 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 7234 transitions. Word has length 65 [2024-11-10 15:09:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:34,385 INFO L471 AbstractCegarLoop]: Abstraction has 4948 states and 7234 transitions. [2024-11-10 15:09:34,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 7234 transitions. [2024-11-10 15:09:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-10 15:09:34,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:34,387 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:34,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 15:09:34,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 15:09:34,587 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:34,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1457477181, now seen corresponding path program 1 times [2024-11-10 15:09:34,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:34,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036695246] [2024-11-10 15:09:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:34,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:09:34,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:34,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036695246] [2024-11-10 15:09:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036695246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793835399] [2024-11-10 15:09:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:34,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:34,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:34,774 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:34,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 15:09:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:34,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 15:09:34,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-10 15:09:34,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-10 15:09:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793835399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:35,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:35,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-10 15:09:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198408886] [2024-11-10 15:09:35,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:35,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:09:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:09:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:09:35,010 INFO L87 Difference]: Start difference. First operand 4948 states and 7234 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:35,199 INFO L93 Difference]: Finished difference Result 5526 states and 7929 transitions. [2024-11-10 15:09:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:09:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-10 15:09:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:35,211 INFO L225 Difference]: With dead ends: 5526 [2024-11-10 15:09:35,211 INFO L226 Difference]: Without dead ends: 5526 [2024-11-10 15:09:35,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:09:35,212 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 139 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:35,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 659 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2024-11-10 15:09:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 4494. [2024-11-10 15:09:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4483 states have (on average 1.4675440553200982) internal successors, (6579), 4493 states have internal predecessors, (6579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 6579 transitions. [2024-11-10 15:09:35,320 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 6579 transitions. Word has length 66 [2024-11-10 15:09:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:35,321 INFO L471 AbstractCegarLoop]: Abstraction has 4494 states and 6579 transitions. [2024-11-10 15:09:35,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 6579 transitions. [2024-11-10 15:09:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-10 15:09:35,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:35,322 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:35,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:35,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:35,527 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:35,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1042279160, now seen corresponding path program 1 times [2024-11-10 15:09:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858437485] [2024-11-10 15:09:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:09:35,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858437485] [2024-11-10 15:09:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858437485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:35,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113032897] [2024-11-10 15:09:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:35,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:35,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:35,643 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:35,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 15:09:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:35,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:09:35,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:09:35,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:09:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113032897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:35,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 15:09:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89015713] [2024-11-10 15:09:35,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:09:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:09:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:09:35,894 INFO L87 Difference]: Start difference. First operand 4494 states and 6579 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:35,973 INFO L93 Difference]: Finished difference Result 4500 states and 6576 transitions. [2024-11-10 15:09:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:09:35,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-10 15:09:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:35,981 INFO L225 Difference]: With dead ends: 4500 [2024-11-10 15:09:35,982 INFO L226 Difference]: Without dead ends: 4500 [2024-11-10 15:09:35,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:09:35,983 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 108 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:35,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 259 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:35,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2024-11-10 15:09:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 4492. [2024-11-10 15:09:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4481 states have (on average 1.4668600758759205) internal successors, (6573), 4491 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 6573 transitions. [2024-11-10 15:09:36,056 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 6573 transitions. Word has length 66 [2024-11-10 15:09:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:36,057 INFO L471 AbstractCegarLoop]: Abstraction has 4492 states and 6573 transitions. [2024-11-10 15:09:36,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 6573 transitions. [2024-11-10 15:09:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-10 15:09:36,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:36,058 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:36,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:36,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:36,259 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:36,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1885594727, now seen corresponding path program 1 times [2024-11-10 15:09:36,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:36,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600275448] [2024-11-10 15:09:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:36,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-10 15:09:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:36,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600275448] [2024-11-10 15:09:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600275448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375241593] [2024-11-10 15:09:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:36,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:36,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:36,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:36,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 15:09:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:36,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 15:09:36,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:36,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:09:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-10 15:09:36,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-10 15:09:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375241593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:37,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:37,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-11-10 15:09:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634158407] [2024-11-10 15:09:37,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:37,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:09:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:09:37,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:09:37,125 INFO L87 Difference]: Start difference. First operand 4492 states and 6573 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:37,407 INFO L93 Difference]: Finished difference Result 8038 states and 11591 transitions. [2024-11-10 15:09:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:09:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-10 15:09:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:37,418 INFO L225 Difference]: With dead ends: 8038 [2024-11-10 15:09:37,418 INFO L226 Difference]: Without dead ends: 8038 [2024-11-10 15:09:37,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:09:37,419 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 604 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:37,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 449 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:09:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2024-11-10 15:09:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 6529. [2024-11-10 15:09:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6529 states, 6518 states have (on average 1.478521018717398) internal successors, (9637), 6528 states have internal predecessors, (9637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6529 states to 6529 states and 9637 transitions. [2024-11-10 15:09:37,512 INFO L78 Accepts]: Start accepts. Automaton has 6529 states and 9637 transitions. Word has length 69 [2024-11-10 15:09:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:37,512 INFO L471 AbstractCegarLoop]: Abstraction has 6529 states and 9637 transitions. [2024-11-10 15:09:37,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states and 9637 transitions. [2024-11-10 15:09:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-10 15:09:37,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:37,514 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:37,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:37,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 15:09:37,715 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:37,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash 333214694, now seen corresponding path program 1 times [2024-11-10 15:09:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:37,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817236353] [2024-11-10 15:09:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 15:09:37,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817236353] [2024-11-10 15:09:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817236353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744353919] [2024-11-10 15:09:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:37,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:37,904 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:37,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 15:09:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:38,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:09:38,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 38 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-10 15:09:38,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 38 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-10 15:09:38,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744353919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:38,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-10 15:09:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504923437] [2024-11-10 15:09:38,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:38,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:09:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:09:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:09:38,146 INFO L87 Difference]: Start difference. First operand 6529 states and 9637 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:38,332 INFO L93 Difference]: Finished difference Result 2832 states and 3869 transitions. [2024-11-10 15:09:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 15:09:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-10 15:09:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:38,338 INFO L225 Difference]: With dead ends: 2832 [2024-11-10 15:09:38,338 INFO L226 Difference]: Without dead ends: 2832 [2024-11-10 15:09:38,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:09:38,339 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 190 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:38,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1371 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2024-11-10 15:09:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2768. [2024-11-10 15:09:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2757 states have (on average 1.3873775843307943) internal successors, (3825), 2767 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 3825 transitions. [2024-11-10 15:09:38,374 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 3825 transitions. Word has length 70 [2024-11-10 15:09:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:38,374 INFO L471 AbstractCegarLoop]: Abstraction has 2768 states and 3825 transitions. [2024-11-10 15:09:38,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 3825 transitions. [2024-11-10 15:09:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-10 15:09:38,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:38,376 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:38,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 15:09:38,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-10 15:09:38,577 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:38,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 64235752, now seen corresponding path program 1 times [2024-11-10 15:09:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121943142] [2024-11-10 15:09:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:38,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-10 15:09:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121943142] [2024-11-10 15:09:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121943142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953326663] [2024-11-10 15:09:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:38,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:38,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:38,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 15:09:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:38,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 15:09:38,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 57 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-10 15:09:39,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 57 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-10 15:09:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953326663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:39,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-10 15:09:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409169746] [2024-11-10 15:09:39,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:39,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:09:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:09:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:09:39,081 INFO L87 Difference]: Start difference. First operand 2768 states and 3825 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:39,319 INFO L93 Difference]: Finished difference Result 5788 states and 7622 transitions. [2024-11-10 15:09:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:09:39,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-10 15:09:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:39,329 INFO L225 Difference]: With dead ends: 5788 [2024-11-10 15:09:39,329 INFO L226 Difference]: Without dead ends: 5788 [2024-11-10 15:09:39,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:09:39,330 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 195 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:39,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 779 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2024-11-10 15:09:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5164. [2024-11-10 15:09:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5164 states, 5153 states have (on average 1.3184552687754707) internal successors, (6794), 5163 states have internal predecessors, (6794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 6794 transitions. [2024-11-10 15:09:39,396 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 6794 transitions. Word has length 93 [2024-11-10 15:09:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:39,396 INFO L471 AbstractCegarLoop]: Abstraction has 5164 states and 6794 transitions. [2024-11-10 15:09:39,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 6794 transitions. [2024-11-10 15:09:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-10 15:09:39,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:39,398 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 7, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:39,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:39,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:39,599 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:39,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1815263580, now seen corresponding path program 1 times [2024-11-10 15:09:39,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:39,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867727926] [2024-11-10 15:09:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:39,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 156 proven. 1 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-10 15:09:39,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867727926] [2024-11-10 15:09:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867727926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261421613] [2024-11-10 15:09:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:39,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:39,819 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:39,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 15:09:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:39,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 15:09:39,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:40,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261421613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:40,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:40,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-10 15:09:40,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312048205] [2024-11-10 15:09:40,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:40,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:09:40,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:40,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:09:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:09:40,232 INFO L87 Difference]: Start difference. First operand 5164 states and 6794 transitions. Second operand has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:40,344 INFO L93 Difference]: Finished difference Result 4580 states and 5736 transitions. [2024-11-10 15:09:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:09:40,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 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 103 [2024-11-10 15:09:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:40,349 INFO L225 Difference]: With dead ends: 4580 [2024-11-10 15:09:40,349 INFO L226 Difference]: Without dead ends: 4580 [2024-11-10 15:09:40,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:09:40,351 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 149 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:40,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 789 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2024-11-10 15:09:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 3915. [2024-11-10 15:09:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3905 states have (on average 1.2752880921895007) internal successors, (4980), 3914 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 4980 transitions. [2024-11-10 15:09:40,390 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 4980 transitions. Word has length 103 [2024-11-10 15:09:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:40,391 INFO L471 AbstractCegarLoop]: Abstraction has 3915 states and 4980 transitions. [2024-11-10 15:09:40,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 4980 transitions. [2024-11-10 15:09:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-10 15:09:40,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:40,394 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:40,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:40,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:40,598 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:40,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1881112474, now seen corresponding path program 1 times [2024-11-10 15:09:40,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:40,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349590483] [2024-11-10 15:09:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 65 proven. 176 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-10 15:09:40,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349590483] [2024-11-10 15:09:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349590483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667255196] [2024-11-10 15:09:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:40,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:40,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:40,802 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:40,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 15:09:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:40,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:09:40,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-10 15:09:41,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:09:41,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667255196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:09:41,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:09:41,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-10 15:09:41,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794593511] [2024-11-10 15:09:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:41,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:09:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:09:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:09:41,048 INFO L87 Difference]: Start difference. First operand 3915 states and 4980 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:41,098 INFO L93 Difference]: Finished difference Result 4216 states and 5257 transitions. [2024-11-10 15:09:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:09:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 108 [2024-11-10 15:09:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:41,102 INFO L225 Difference]: With dead ends: 4216 [2024-11-10 15:09:41,102 INFO L226 Difference]: Without dead ends: 4216 [2024-11-10 15:09:41,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:09:41,103 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 51 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:41,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 136 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2024-11-10 15:09:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 3915. [2024-11-10 15:09:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3905 states have (on average 1.2578745198463508) internal successors, (4912), 3914 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 4912 transitions. [2024-11-10 15:09:41,146 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 4912 transitions. Word has length 108 [2024-11-10 15:09:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:41,146 INFO L471 AbstractCegarLoop]: Abstraction has 3915 states and 4912 transitions. [2024-11-10 15:09:41,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 4912 transitions. [2024-11-10 15:09:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-10 15:09:41,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:41,152 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:41,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 15:09:41,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 15:09:41,353 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:41,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1399962560, now seen corresponding path program 1 times [2024-11-10 15:09:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:41,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112438037] [2024-11-10 15:09:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 94 proven. 3 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-10 15:09:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:41,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112438037] [2024-11-10 15:09:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112438037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154061420] [2024-11-10 15:09:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:41,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:41,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:41,518 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:41,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 15:09:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:41,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 15:09:41,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 190 proven. 10 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-10 15:09:41,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 190 proven. 10 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-10 15:09:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154061420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:41,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:41,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2024-11-10 15:09:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104606834] [2024-11-10 15:09:41,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:41,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:09:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:09:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:09:41,939 INFO L87 Difference]: Start difference. First operand 3915 states and 4912 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:42,070 INFO L93 Difference]: Finished difference Result 3091 states and 3671 transitions. [2024-11-10 15:09:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:09:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-10 15:09:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:42,073 INFO L225 Difference]: With dead ends: 3091 [2024-11-10 15:09:42,074 INFO L226 Difference]: Without dead ends: 3091 [2024-11-10 15:09:42,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 213 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:09:42,075 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 173 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:42,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 873 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2024-11-10 15:09:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2410. [2024-11-10 15:09:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2400 states have (on average 1.1995833333333332) internal successors, (2879), 2409 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 2879 transitions. [2024-11-10 15:09:42,099 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 2879 transitions. Word has length 110 [2024-11-10 15:09:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:42,099 INFO L471 AbstractCegarLoop]: Abstraction has 2410 states and 2879 transitions. [2024-11-10 15:09:42,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 2879 transitions. [2024-11-10 15:09:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-10 15:09:42,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:42,102 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:42,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 15:09:42,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 15:09:42,303 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:42,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash 331403477, now seen corresponding path program 1 times [2024-11-10 15:09:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:42,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990554145] [2024-11-10 15:09:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:42,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990554145] [2024-11-10 15:09:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990554145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521411313] [2024-11-10 15:09:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:42,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:42,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:42,568 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:42,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 15:09:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:42,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:09:42,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:42,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:09:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:43,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:43,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521411313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:43,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:43,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-10 15:09:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473774477] [2024-11-10 15:09:43,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:43,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 15:09:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 15:09:43,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:09:43,468 INFO L87 Difference]: Start difference. First operand 2410 states and 2879 transitions. Second operand has 16 states, 15 states have (on average 12.4) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:44,193 INFO L93 Difference]: Finished difference Result 6873 states and 8161 transitions. [2024-11-10 15:09:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:09:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 12.4) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 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 112 [2024-11-10 15:09:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:44,200 INFO L225 Difference]: With dead ends: 6873 [2024-11-10 15:09:44,200 INFO L226 Difference]: Without dead ends: 6873 [2024-11-10 15:09:44,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 15:09:44,202 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1235 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:44,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 963 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:09:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2024-11-10 15:09:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 2525. [2024-11-10 15:09:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2515 states have (on average 1.2047713717693838) internal successors, (3030), 2524 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3030 transitions. [2024-11-10 15:09:44,253 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3030 transitions. Word has length 112 [2024-11-10 15:09:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:44,253 INFO L471 AbstractCegarLoop]: Abstraction has 2525 states and 3030 transitions. [2024-11-10 15:09:44,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 12.4) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3030 transitions. [2024-11-10 15:09:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-10 15:09:44,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:44,255 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:44,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-10 15:09:44,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-10 15:09:44,456 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:44,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 331403476, now seen corresponding path program 1 times [2024-11-10 15:09:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697303505] [2024-11-10 15:09:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697303505] [2024-11-10 15:09:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697303505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079329202] [2024-11-10 15:09:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:44,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:44,629 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:44,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 15:09:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:44,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 15:09:44,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:44,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:45,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079329202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:45,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:45,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 15:09:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951260577] [2024-11-10 15:09:45,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:45,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:09:45,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:45,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:09:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:09:45,028 INFO L87 Difference]: Start difference. First operand 2525 states and 3030 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:45,286 INFO L93 Difference]: Finished difference Result 3480 states and 4127 transitions. [2024-11-10 15:09:45,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:09:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 112 [2024-11-10 15:09:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:45,290 INFO L225 Difference]: With dead ends: 3480 [2024-11-10 15:09:45,290 INFO L226 Difference]: Without dead ends: 3480 [2024-11-10 15:09:45,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:09:45,291 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 318 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:45,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 405 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:09:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-11-10 15:09:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2524. [2024-11-10 15:09:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2515 states have (on average 1.2035785288270378) internal successors, (3027), 2523 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3027 transitions. [2024-11-10 15:09:45,319 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3027 transitions. Word has length 112 [2024-11-10 15:09:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:45,320 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 3027 transitions. [2024-11-10 15:09:45,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3027 transitions. [2024-11-10 15:09:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-10 15:09:45,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:45,322 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:45,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 15:09:45,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:45,523 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:45,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash 651121226, now seen corresponding path program 1 times [2024-11-10 15:09:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:45,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535826372] [2024-11-10 15:09:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:45,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535826372] [2024-11-10 15:09:45,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535826372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039257799] [2024-11-10 15:09:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:45,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:45,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:45,637 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:45,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 15:09:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:45,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:09:45,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 133 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-10 15:09:45,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 133 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-10 15:09:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039257799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:46,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-10 15:09:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670047350] [2024-11-10 15:09:46,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:46,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:09:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:09:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:09:46,141 INFO L87 Difference]: Start difference. First operand 2524 states and 3027 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-11-10 15:09:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:46,801 INFO L93 Difference]: Finished difference Result 6253 states and 7382 transitions. [2024-11-10 15:09:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 15:09:46,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) Word has length 114 [2024-11-10 15:09:46,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:46,806 INFO L225 Difference]: With dead ends: 6253 [2024-11-10 15:09:46,806 INFO L226 Difference]: Without dead ends: 6253 [2024-11-10 15:09:46,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=404, Invalid=1002, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 15:09:46,807 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 940 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:46,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1112 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:09:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2024-11-10 15:09:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 2524. [2024-11-10 15:09:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2515 states have (on average 1.2003976143141153) internal successors, (3019), 2523 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3019 transitions. [2024-11-10 15:09:46,847 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3019 transitions. Word has length 114 [2024-11-10 15:09:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:46,847 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 3019 transitions. [2024-11-10 15:09:46,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-11-10 15:09:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3019 transitions. [2024-11-10 15:09:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-10 15:09:46,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:46,850 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:46,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:47,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 15:09:47,055 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:47,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1288876935, now seen corresponding path program 1 times [2024-11-10 15:09:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44538621] [2024-11-10 15:09:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44538621] [2024-11-10 15:09:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44538621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973058965] [2024-11-10 15:09:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:47,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:47,252 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:47,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 15:09:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:47,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:09:47,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:47,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973058965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:47,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:47,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 15:09:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074464431] [2024-11-10 15:09:47,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:47,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:09:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:09:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:09:47,713 INFO L87 Difference]: Start difference. First operand 2524 states and 3019 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:47,930 INFO L93 Difference]: Finished difference Result 4936 states and 5873 transitions. [2024-11-10 15:09:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:09:47,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-10 15:09:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:47,934 INFO L225 Difference]: With dead ends: 4936 [2024-11-10 15:09:47,934 INFO L226 Difference]: Without dead ends: 4936 [2024-11-10 15:09:47,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 232 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:09:47,934 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 522 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:47,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 261 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:09:47,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2024-11-10 15:09:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 2525. [2024-11-10 15:09:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2516 states have (on average 1.2003179650238474) internal successors, (3020), 2524 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3020 transitions. [2024-11-10 15:09:47,956 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3020 transitions. Word has length 115 [2024-11-10 15:09:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:47,956 INFO L471 AbstractCegarLoop]: Abstraction has 2525 states and 3020 transitions. [2024-11-10 15:09:47,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3020 transitions. [2024-11-10 15:09:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-10 15:09:47,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:47,958 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 8, 7, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:47,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:48,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:48,159 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:48,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1118385704, now seen corresponding path program 1 times [2024-11-10 15:09:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045706424] [2024-11-10 15:09:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 84 proven. 313 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:09:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045706424] [2024-11-10 15:09:48,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045706424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649464843] [2024-11-10 15:09:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:48,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:48,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:48,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:48,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 15:09:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:49,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-10 15:09:49,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:49,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:09:49,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:09:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 70 proven. 291 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-10 15:09:49,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 70 proven. 291 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-10 15:09:49,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649464843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:49,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:49,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2024-11-10 15:09:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176215358] [2024-11-10 15:09:49,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:49,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:09:49,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:09:49,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:09:49,769 INFO L87 Difference]: Start difference. First operand 2525 states and 3020 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:52,427 INFO L93 Difference]: Finished difference Result 14428 states and 16861 transitions. [2024-11-10 15:09:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-10 15:09:52,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 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 117 [2024-11-10 15:09:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:52,441 INFO L225 Difference]: With dead ends: 14428 [2024-11-10 15:09:52,442 INFO L226 Difference]: Without dead ends: 14428 [2024-11-10 15:09:52,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1558, Invalid=9572, Unknown=0, NotChecked=0, Total=11130 [2024-11-10 15:09:52,445 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 2313 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:52,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 2964 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 15:09:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14428 states. [2024-11-10 15:09:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14428 to 3776. [2024-11-10 15:09:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3767 states have (on average 1.1975046456065834) internal successors, (4511), 3775 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 4511 transitions. [2024-11-10 15:09:52,515 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 4511 transitions. Word has length 117 [2024-11-10 15:09:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:52,515 INFO L471 AbstractCegarLoop]: Abstraction has 3776 states and 4511 transitions. [2024-11-10 15:09:52,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 4511 transitions. [2024-11-10 15:09:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-10 15:09:52,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:52,518 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:52,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:52,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:52,719 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:52,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:52,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1100126502, now seen corresponding path program 1 times [2024-11-10 15:09:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:52,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016901973] [2024-11-10 15:09:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 11 proven. 258 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-10 15:09:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016901973] [2024-11-10 15:09:53,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016901973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11947663] [2024-11-10 15:09:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:53,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:53,922 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:53,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 15:09:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:54,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 15:09:54,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:54,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:09:54,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:09:54,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:09:54,498 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 19 treesize of output 15 [2024-11-10 15:09:54,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:09:54,507 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 19 treesize of output 15 [2024-11-10 15:09:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-10 15:09:54,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:54,738 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 12 treesize of output 10 [2024-11-10 15:09:54,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-10 15:09:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-10 15:09:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11947663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:55,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:55,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 23 [2024-11-10 15:09:55,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411383163] [2024-11-10 15:09:55,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:55,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 15:09:55,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 15:09:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:09:55,069 INFO L87 Difference]: Start difference. First operand 3776 states and 4511 transitions. Second operand has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 23 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:55,567 INFO L93 Difference]: Finished difference Result 7695 states and 9098 transitions. [2024-11-10 15:09:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 15:09:55,567 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 23 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-10 15:09:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:55,576 INFO L225 Difference]: With dead ends: 7695 [2024-11-10 15:09:55,576 INFO L226 Difference]: Without dead ends: 7695 [2024-11-10 15:09:55,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 15:09:55,577 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 495 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:55,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 951 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:09:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2024-11-10 15:09:55,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 4985. [2024-11-10 15:09:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4985 states, 4976 states have (on average 1.1991559485530547) internal successors, (5967), 4984 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4985 states to 4985 states and 5967 transitions. [2024-11-10 15:09:55,630 INFO L78 Accepts]: Start accepts. Automaton has 4985 states and 5967 transitions. Word has length 120 [2024-11-10 15:09:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:55,631 INFO L471 AbstractCegarLoop]: Abstraction has 4985 states and 5967 transitions. [2024-11-10 15:09:55,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 23 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4985 states and 5967 transitions. [2024-11-10 15:09:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-10 15:09:55,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:55,635 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:55,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:55,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:55,836 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:55,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash -659653873, now seen corresponding path program 1 times [2024-11-10 15:09:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:55,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703043123] [2024-11-10 15:09:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:55,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703043123] [2024-11-10 15:09:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703043123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136778463] [2024-11-10 15:09:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:56,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:56,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:56,088 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:56,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 15:09:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:56,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 15:09:56,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:56,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:09:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-10 15:09:56,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:56,586 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_~x1~0.base_30 Int)) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| v_~x1~0.base_30 0)) (not (= (select |c_#valid| v_~x1~0.base_30) 0)))) is different from false [2024-11-10 15:09:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 97 trivial. 48 not checked. [2024-11-10 15:09:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136778463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:56,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 8 [2024-11-10 15:09:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304637032] [2024-11-10 15:09:56,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:56,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:09:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:09:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2024-11-10 15:09:56,610 INFO L87 Difference]: Start difference. First operand 4985 states and 5967 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:57,019 INFO L93 Difference]: Finished difference Result 10824 states and 12857 transitions. [2024-11-10 15:09:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:09:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-11-10 15:09:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:57,036 INFO L225 Difference]: With dead ends: 10824 [2024-11-10 15:09:57,037 INFO L226 Difference]: Without dead ends: 10798 [2024-11-10 15:09:57,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=201, Unknown=1, NotChecked=30, Total=306 [2024-11-10 15:09:57,037 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 397 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:57,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 783 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 358 Invalid, 0 Unknown, 408 Unchecked, 0.3s Time] [2024-11-10 15:09:57,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2024-11-10 15:09:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 8557. [2024-11-10 15:09:57,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8557 states, 8548 states have (on average 1.1970051474029013) internal successors, (10232), 8556 states have internal predecessors, (10232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8557 states to 8557 states and 10232 transitions. [2024-11-10 15:09:57,189 INFO L78 Accepts]: Start accepts. Automaton has 8557 states and 10232 transitions. Word has length 122 [2024-11-10 15:09:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:57,190 INFO L471 AbstractCegarLoop]: Abstraction has 8557 states and 10232 transitions. [2024-11-10 15:09:57,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8557 states and 10232 transitions. [2024-11-10 15:09:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-10 15:09:57,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:57,197 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:57,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:57,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:57,398 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:57,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1157122223, now seen corresponding path program 1 times [2024-11-10 15:09:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088578170] [2024-11-10 15:09:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:57,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 93 proven. 5 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-10 15:09:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:57,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088578170] [2024-11-10 15:09:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088578170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592873092] [2024-11-10 15:09:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:57,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:57,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:57,596 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:57,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 15:09:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:57,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:09:57,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-10 15:09:57,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-10 15:09:57,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592873092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:57,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:57,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2024-11-10 15:09:57,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611145398] [2024-11-10 15:09:57,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:57,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:09:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:09:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:09:57,823 INFO L87 Difference]: Start difference. First operand 8557 states and 10232 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:57,918 INFO L93 Difference]: Finished difference Result 8288 states and 9866 transitions. [2024-11-10 15:09:57,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:09:57,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-11-10 15:09:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:57,927 INFO L225 Difference]: With dead ends: 8288 [2024-11-10 15:09:57,927 INFO L226 Difference]: Without dead ends: 8269 [2024-11-10 15:09:57,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:09:57,928 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 211 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:57,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 319 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2024-11-10 15:09:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 8223. [2024-11-10 15:09:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 8214 states have (on average 1.1928414901387874) internal successors, (9798), 8222 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 9798 transitions. [2024-11-10 15:09:58,007 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 9798 transitions. Word has length 122 [2024-11-10 15:09:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:58,008 INFO L471 AbstractCegarLoop]: Abstraction has 8223 states and 9798 transitions. [2024-11-10 15:09:58,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 9798 transitions. [2024-11-10 15:09:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-10 15:09:58,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:58,015 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:58,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:58,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-10 15:09:58,216 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:58,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1331031013, now seen corresponding path program 1 times [2024-11-10 15:09:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007312486] [2024-11-10 15:09:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 335 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-10 15:09:58,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007312486] [2024-11-10 15:09:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007312486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:58,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792296772] [2024-11-10 15:09:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:58,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:58,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:58,429 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:58,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 15:09:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:58,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:09:58,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 335 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-10 15:09:58,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-10 15:09:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792296772] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:58,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:09:58,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 9 [2024-11-10 15:09:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618982600] [2024-11-10 15:09:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:09:58,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:09:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:09:58,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:09:58,711 INFO L87 Difference]: Start difference. First operand 8223 states and 9798 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:58,763 INFO L93 Difference]: Finished difference Result 5274 states and 6190 transitions. [2024-11-10 15:09:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:09:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-10 15:09:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:58,769 INFO L225 Difference]: With dead ends: 5274 [2024-11-10 15:09:58,769 INFO L226 Difference]: Without dead ends: 5274 [2024-11-10 15:09:58,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:09:58,769 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 98 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:58,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 237 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:09:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2024-11-10 15:09:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5080. [2024-11-10 15:09:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5080 states, 5071 states have (on average 1.1776769867876158) internal successors, (5972), 5079 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5080 states to 5080 states and 5972 transitions. [2024-11-10 15:09:58,808 INFO L78 Accepts]: Start accepts. Automaton has 5080 states and 5972 transitions. Word has length 146 [2024-11-10 15:09:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:58,808 INFO L471 AbstractCegarLoop]: Abstraction has 5080 states and 5972 transitions. [2024-11-10 15:09:58,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5080 states and 5972 transitions. [2024-11-10 15:09:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-10 15:09:58,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:58,813 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 12, 11, 9, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:58,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-10 15:09:59,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-10 15:09:59,014 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:09:59,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1865599823, now seen corresponding path program 2 times [2024-11-10 15:09:59,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:59,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852748100] [2024-11-10 15:09:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:59,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 418 proven. 3 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-10 15:09:59,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:59,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852748100] [2024-11-10 15:09:59,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852748100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:59,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316002011] [2024-11-10 15:09:59,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:09:59,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:59,187 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:59,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 15:09:59,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:09:59,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:09:59,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:09:59,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:09:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 377 proven. 97 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-10 15:09:59,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:09:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 377 proven. 97 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-10 15:09:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316002011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:09:59,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:09:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 15:09:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152919241] [2024-11-10 15:09:59,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:09:59,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:09:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:09:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:09:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:09:59,587 INFO L87 Difference]: Start difference. First operand 5080 states and 5972 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:59,787 INFO L93 Difference]: Finished difference Result 4299 states and 4875 transitions. [2024-11-10 15:09:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 15:09:59,788 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-11-10 15:09:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:59,793 INFO L225 Difference]: With dead ends: 4299 [2024-11-10 15:09:59,793 INFO L226 Difference]: Without dead ends: 4299 [2024-11-10 15:09:59,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2024-11-10 15:09:59,794 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 237 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:59,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1106 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:09:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2024-11-10 15:09:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4033. [2024-11-10 15:09:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4024 states have (on average 1.1414015904572565) internal successors, (4593), 4032 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 4593 transitions. [2024-11-10 15:09:59,835 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 4593 transitions. Word has length 155 [2024-11-10 15:09:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:59,836 INFO L471 AbstractCegarLoop]: Abstraction has 4033 states and 4593 transitions. [2024-11-10 15:09:59,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 4593 transitions. [2024-11-10 15:09:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-10 15:09:59,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:59,840 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:59,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-10 15:10:00,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-10 15:10:00,044 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2024-11-10 15:10:00,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1813556733, now seen corresponding path program 1 times [2024-11-10 15:10:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:00,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776595137] [2024-11-10 15:10:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 679 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-10 15:10:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776595137] [2024-11-10 15:10:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776595137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:01,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948689418] [2024-11-10 15:10:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:01,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:01,183 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:01,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 15:10:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:01,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-10 15:10:01,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:01,559 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 [2024-11-10 15:10:01,563 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 [2024-11-10 15:10:01,738 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:10:01,738 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 [2024-11-10 15:10:01,752 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 [2024-11-10 15:10:01,757 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 [2024-11-10 15:10:01,766 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 [2024-11-10 15:10:01,771 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 [2024-11-10 15:10:01,824 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 [2024-11-10 15:10:01,828 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 [2024-11-10 15:10:01,961 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 [2024-11-10 15:10:01,967 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 [2024-11-10 15:10:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 100 proven. 673 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 15:10:02,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:10:02,482 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~S~0.offset 4))) (and (forall ((v_ArrVal_1494 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| c_~x1~0.base v_ArrVal_1494) c_~S~0.base) .cse0) 0)) (forall ((v_ArrVal_1493 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| c_~x1~0.base v_ArrVal_1493) c_~S~0.base) .cse0) 0)))) is different from false [2024-11-10 15:10:03,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:10:03,034 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 22 treesize of output 23 [2024-11-10 15:10:03,037 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 36 treesize of output 24 [2024-11-10 15:10:03,039 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 11 treesize of output 7 [2024-11-10 15:10:03,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:10:03,053 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 22 treesize of output 23 [2024-11-10 15:10:03,056 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:10:03,058 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 [2024-11-10 15:10:03,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:10:03,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 46 [2024-11-10 15:10:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 90 proven. 443 refuted. 0 times theorem prover too weak. 56 trivial. 240 not checked. [2024-11-10 15:10:03,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948689418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:10:03,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:10:03,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 24 [2024-11-10 15:10:03,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633031239] [2024-11-10 15:10:03,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:10:03,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 15:10:03,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 15:10:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=489, Unknown=2, NotChecked=44, Total=600 [2024-11-10 15:10:03,402 INFO L87 Difference]: Start difference. First operand 4033 states and 4593 transitions. Second operand has 25 states, 25 states have (on average 9.64) internal successors, (241), 24 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:07,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:12,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:13,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:15,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:16,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:17,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:19,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:20,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:22,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:23,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:25,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:29,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:30,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:32,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:34,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:35,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:36,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:38,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:40,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:42,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 15:10:43,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]