./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/960521-1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/960521-1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19e2947f690bcfa099d607c2a0a6dc0e6f351f54e3f3874a42109cbf9e336957 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:25:42,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:25:42,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:25:42,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:25:42,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:25:42,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:25:42,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:25:42,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:25:42,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:25:42,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:25:42,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:25:42,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:25:42,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:25:42,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:25:42,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:25:42,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:25:42,819 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:25:42,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:25:42,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:25:42,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:25:42,821 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:25:42,822 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:25:42,822 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:25:42,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:25:42,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:25:42,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:25:42,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:25:42,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:25:42,824 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:25:42,824 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:25:42,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:25:42,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:25:42,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:25:42,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:25:42,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:25:42,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:25:42,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:25:42,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:25:42,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:25:42,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:25:42,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:25:42,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:25:42,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19e2947f690bcfa099d607c2a0a6dc0e6f351f54e3f3874a42109cbf9e336957 [2024-11-17 00:25:43,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:25:43,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:25:43,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:25:43,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:25:43,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:25:43,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/960521-1-2.i [2024-11-17 00:25:44,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:25:44,770 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:25:44,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/960521-1-2.i [2024-11-17 00:25:44,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6399e1bef/a74046da53034d94ace7c52d76cc17ef/FLAG1a5c353ca [2024-11-17 00:25:45,093 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6399e1bef/a74046da53034d94ace7c52d76cc17ef [2024-11-17 00:25:45,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:25:45,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:25:45,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:25:45,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:25:45,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:25:45,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f72a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45, skipping insertion in model container [2024-11-17 00:25:45,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:25:45,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:25:45,433 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:25:45,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:25:45,506 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:25:45,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45 WrapperNode [2024-11-17 00:25:45,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:25:45,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:25:45,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:25:45,508 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:25:45,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,546 INFO L138 Inliner]: procedures = 121, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-17 00:25:45,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:25:45,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:25:45,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:25:45,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:25:45,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,582 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 1, 3]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-17 00:25:45,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,588 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:25:45,599 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:25:45,599 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:25:45,599 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:25:45,600 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (1/1) ... [2024-11-17 00:25:45,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:25:45,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:45,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 00:25:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 00:25:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:25:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:25:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 00:25:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:25:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:25:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 00:25:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:25:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:25:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:25:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:25:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:25:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 00:25:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:25:45,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:25:45,822 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:25:45,824 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:25:46,022 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-17 00:25:46,022 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:25:46,059 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:25:46,059 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:25:46,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:25:46 BoogieIcfgContainer [2024-11-17 00:25:46,060 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:25:46,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:25:46,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:25:46,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:25:46,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:25:45" (1/3) ... [2024-11-17 00:25:46,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a40aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:25:46, skipping insertion in model container [2024-11-17 00:25:46,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:45" (2/3) ... [2024-11-17 00:25:46,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a40aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:25:46, skipping insertion in model container [2024-11-17 00:25:46,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:25:46" (3/3) ... [2024-11-17 00:25:46,070 INFO L112 eAbstractionObserver]: Analyzing ICFG 960521-1-2.i [2024-11-17 00:25:46,083 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:25:46,084 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-11-17 00:25:46,128 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:25:46,135 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;@74b60e46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:25:46,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 00:25:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-17 00:25:46,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:46,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-17 00:25:46,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:46,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash 91323, now seen corresponding path program 1 times [2024-11-17 00:25:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:46,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660499130] [2024-11-17 00:25:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:46,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:46,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660499130] [2024-11-17 00:25:46,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660499130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:46,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:46,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:25:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939361618] [2024-11-17 00:25:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:46,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:25:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:25:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:25:46,403 INFO L87 Difference]: Start difference. First operand has 59 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:46,475 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-17 00:25:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:25:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-17 00:25:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:46,484 INFO L225 Difference]: With dead ends: 58 [2024-11-17 00:25:46,484 INFO L226 Difference]: Without dead ends: 55 [2024-11-17 00:25:46,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:25:46,489 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:46,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:25:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-17 00:25:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-17 00:25:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-17 00:25:46,517 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 3 [2024-11-17 00:25:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:46,517 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-17 00:25:46,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-17 00:25:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-17 00:25:46,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:46,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-17 00:25:46,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:25:46,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:46,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash 91324, now seen corresponding path program 1 times [2024-11-17 00:25:46,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:46,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324503073] [2024-11-17 00:25:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:46,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324503073] [2024-11-17 00:25:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324503073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:46,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:46,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:25:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265240387] [2024-11-17 00:25:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:46,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:25:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:46,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:25:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:25:46,700 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:46,729 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-17 00:25:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:25:46,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-17 00:25:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:46,732 INFO L225 Difference]: With dead ends: 54 [2024-11-17 00:25:46,732 INFO L226 Difference]: Without dead ends: 54 [2024-11-17 00:25:46,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:25:46,734 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:46,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-17 00:25:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-17 00:25:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.6) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-17 00:25:46,745 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 3 [2024-11-17 00:25:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:46,745 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-17 00:25:46,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-17 00:25:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-17 00:25:46,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:46,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:46,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:25:46,749 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:46,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1559808491, now seen corresponding path program 1 times [2024-11-17 00:25:46,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:46,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478409177] [2024-11-17 00:25:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:46,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:46,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478409177] [2024-11-17 00:25:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478409177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:46,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:46,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:25:46,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751441111] [2024-11-17 00:25:46,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:46,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:25:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:25:46,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:46,892 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:46,945 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-11-17 00:25:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:25:46,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-17 00:25:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:46,948 INFO L225 Difference]: With dead ends: 51 [2024-11-17 00:25:46,948 INFO L226 Difference]: Without dead ends: 51 [2024-11-17 00:25:46,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:46,949 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:46,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 48 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-17 00:25:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-17 00:25:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-17 00:25:46,956 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 7 [2024-11-17 00:25:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:46,956 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-17 00:25:46,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-17 00:25:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-17 00:25:46,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:46,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:46,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:25:46,957 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:46,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1559808490, now seen corresponding path program 1 times [2024-11-17 00:25:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520616485] [2024-11-17 00:25:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:47,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520616485] [2024-11-17 00:25:47,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520616485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:47,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:47,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:25:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857736295] [2024-11-17 00:25:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:47,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:25:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:25:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:25:47,185 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:47,297 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2024-11-17 00:25:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:25:47,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-17 00:25:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:47,301 INFO L225 Difference]: With dead ends: 58 [2024-11-17 00:25:47,302 INFO L226 Difference]: Without dead ends: 58 [2024-11-17 00:25:47,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:25:47,303 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 61 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:47,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 78 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:25:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-17 00:25:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-17 00:25:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.425) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-17 00:25:47,313 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 7 [2024-11-17 00:25:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:47,313 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-17 00:25:47,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-17 00:25:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-17 00:25:47,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:47,315 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:47,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:25:47,316 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:47,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1004547208, now seen corresponding path program 1 times [2024-11-17 00:25:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:47,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805781576] [2024-11-17 00:25:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805781576] [2024-11-17 00:25:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805781576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:25:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028712609] [2024-11-17 00:25:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:47,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:25:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:25:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:47,388 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 4 states, 4 states have (on average 2.5) 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) [2024-11-17 00:25:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:47,428 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-17 00:25:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:25:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) 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 [2024-11-17 00:25:47,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:47,429 INFO L225 Difference]: With dead ends: 58 [2024-11-17 00:25:47,429 INFO L226 Difference]: Without dead ends: 58 [2024-11-17 00:25:47,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:47,431 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 62 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:47,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 79 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:47,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-17 00:25:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-17 00:25:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.4) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-17 00:25:47,442 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 10 [2024-11-17 00:25:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:47,445 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-17 00:25:47,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) 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) [2024-11-17 00:25:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-17 00:25:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-17 00:25:47,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:47,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:47,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:25:47,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:47,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1045616776, now seen corresponding path program 1 times [2024-11-17 00:25:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:47,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033158976] [2024-11-17 00:25:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:47,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:47,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033158976] [2024-11-17 00:25:47,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033158976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:47,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680843236] [2024-11-17 00:25:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:47,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:47,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:47,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:47,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:25:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:47,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 00:25:47,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:47,939 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:25:47,940 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-17 00:25:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:48,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:48,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680843236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:48,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:48,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-17 00:25:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126566098] [2024-11-17 00:25:48,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:48,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 00:25:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 00:25:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:25:48,311 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:48,648 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-11-17 00:25:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:25:48,648 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-17 00:25:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:48,650 INFO L225 Difference]: With dead ends: 76 [2024-11-17 00:25:48,650 INFO L226 Difference]: Without dead ends: 76 [2024-11-17 00:25:48,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:25:48,651 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 229 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:48,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 182 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:25:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-17 00:25:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-11-17 00:25:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-17 00:25:48,664 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 11 [2024-11-17 00:25:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:48,664 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-17 00:25:48,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-17 00:25:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:25:48,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:48,665 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:48,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:25:48,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 00:25:48,866 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:48,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1427427030, now seen corresponding path program 1 times [2024-11-17 00:25:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682439562] [2024-11-17 00:25:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:25:48,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:48,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682439562] [2024-11-17 00:25:48,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682439562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:48,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:48,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:25:48,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125627492] [2024-11-17 00:25:48,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:48,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:25:48,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:48,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:25:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:48,912 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:48,968 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2024-11-17 00:25:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:25:48,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-17 00:25:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:48,971 INFO L225 Difference]: With dead ends: 72 [2024-11-17 00:25:48,971 INFO L226 Difference]: Without dead ends: 72 [2024-11-17 00:25:48,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:25:48,972 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:48,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 70 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-17 00:25:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-17 00:25:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2024-11-17 00:25:48,979 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 14 [2024-11-17 00:25:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:48,980 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2024-11-17 00:25:48,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2024-11-17 00:25:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:25:48,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:48,983 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:48,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:25:48,984 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:48,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1427427031, now seen corresponding path program 1 times [2024-11-17 00:25:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:48,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479516794] [2024-11-17 00:25:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:49,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479516794] [2024-11-17 00:25:49,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479516794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:49,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299533742] [2024-11-17 00:25:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:49,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:49,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:49,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:49,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:25:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:49,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 00:25:49,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:49,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:49,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299533742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:49,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:49,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-17 00:25:49,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877135124] [2024-11-17 00:25:49,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:49,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:25:49,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:49,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:25:49,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:25:49,206 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:49,279 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2024-11-17 00:25:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:25:49,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-17 00:25:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:49,280 INFO L225 Difference]: With dead ends: 72 [2024-11-17 00:25:49,280 INFO L226 Difference]: Without dead ends: 72 [2024-11-17 00:25:49,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:25:49,281 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 137 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:49,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 142 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-17 00:25:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-17 00:25:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-17 00:25:49,290 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 14 [2024-11-17 00:25:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:49,290 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-17 00:25:49,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-17 00:25:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:25:49,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:49,294 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-11-17 00:25:49,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:25:49,497 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,SelfDestructingSolverStorable7 [2024-11-17 00:25:49,498 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:49,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:49,498 INFO L85 PathProgramCache]: Analyzing trace with hash 505148830, now seen corresponding path program 2 times [2024-11-17 00:25:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:49,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790352540] [2024-11-17 00:25:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:49,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:50,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790352540] [2024-11-17 00:25:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790352540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608678152] [2024-11-17 00:25:50,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:25:50,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:50,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:50,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:50,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:25:50,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:25:50,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:25:50,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 00:25:50,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:50,098 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:25:50,099 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-17 00:25:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:50,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608678152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:50,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:50,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 22 [2024-11-17 00:25:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568905335] [2024-11-17 00:25:50,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:50,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 00:25:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 00:25:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-11-17 00:25:50,801 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:51,631 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2024-11-17 00:25:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:25:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-17 00:25:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:51,633 INFO L225 Difference]: With dead ends: 120 [2024-11-17 00:25:51,633 INFO L226 Difference]: Without dead ends: 120 [2024-11-17 00:25:51,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 00:25:51,634 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 356 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:51,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 229 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:25:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-17 00:25:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-17 00:25:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 119 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2024-11-17 00:25:51,648 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 23 [2024-11-17 00:25:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:51,648 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2024-11-17 00:25:51,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2024-11-17 00:25:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-17 00:25:51,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:51,652 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-11-17 00:25:51,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 00:25:51,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:51,853 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:51,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 197719786, now seen corresponding path program 3 times [2024-11-17 00:25:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823901757] [2024-11-17 00:25:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:51,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823901757] [2024-11-17 00:25:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823901757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772427445] [2024-11-17 00:25:52,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:25:52,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:52,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:52,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:52,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:25:52,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:25:52,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:25:52,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 00:25:52,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:52,710 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:25:52,710 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-17 00:25:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-17 00:25:53,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-17 00:25:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772427445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:53,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:53,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 23 [2024-11-17 00:25:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622516200] [2024-11-17 00:25:53,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:53,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 00:25:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 00:25:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:25:53,632 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:54,703 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2024-11-17 00:25:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:25:54,704 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-17 00:25:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:54,705 INFO L225 Difference]: With dead ends: 138 [2024-11-17 00:25:54,705 INFO L226 Difference]: Without dead ends: 138 [2024-11-17 00:25:54,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=302, Invalid=1180, Unknown=0, NotChecked=0, Total=1482 [2024-11-17 00:25:54,707 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 433 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:54,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 393 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:25:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-17 00:25:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2024-11-17 00:25:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 133 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2024-11-17 00:25:54,718 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 47 [2024-11-17 00:25:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:54,719 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2024-11-17 00:25:54,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2024-11-17 00:25:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-17 00:25:54,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:54,720 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:54,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:25:54,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:54,921 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:54,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 33824225, now seen corresponding path program 2 times [2024-11-17 00:25:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335954854] [2024-11-17 00:25:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335954854] [2024-11-17 00:25:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335954854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843477293] [2024-11-17 00:25:55,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:25:55,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:55,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:55,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:25:55,262 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 00:25:55,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:25:55,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 00:25:55,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:55,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-17 00:25:55,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:25:55,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-17 00:25:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-17 00:25:55,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:25:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843477293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:55,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:25:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2024-11-17 00:25:55,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456536160] [2024-11-17 00:25:55,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:55,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:25:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:25:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:25:55,507 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:55,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:55,551 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2024-11-17 00:25:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:25:55,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-17 00:25:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:55,552 INFO L225 Difference]: With dead ends: 127 [2024-11-17 00:25:55,552 INFO L226 Difference]: Without dead ends: 127 [2024-11-17 00:25:55,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:25:55,553 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:55,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 62 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-17 00:25:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-17 00:25:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2024-11-17 00:25:55,557 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 58 [2024-11-17 00:25:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:55,557 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2024-11-17 00:25:55,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2024-11-17 00:25:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-17 00:25:55,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:55,559 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:55,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 00:25:55,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-17 00:25:55,763 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:55,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 84342659, now seen corresponding path program 1 times [2024-11-17 00:25:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:55,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33404050] [2024-11-17 00:25:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:25:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33404050] [2024-11-17 00:25:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33404050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658636580] [2024-11-17 00:25:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:56,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:56,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:56,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:56,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:25:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:56,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 00:25:56,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:25:56,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:25:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658636580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:56,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:56,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2024-11-17 00:25:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142592191] [2024-11-17 00:25:56,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:56,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-17 00:25:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-17 00:25:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-17 00:25:56,788 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 43 states, 43 states have (on average 3.813953488372093) internal successors, (164), 43 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:57,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:57,267 INFO L93 Difference]: Finished difference Result 239 states and 275 transitions. [2024-11-17 00:25:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-17 00:25:57,267 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.813953488372093) internal successors, (164), 43 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-17 00:25:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:57,269 INFO L225 Difference]: With dead ends: 239 [2024-11-17 00:25:57,269 INFO L226 Difference]: Without dead ends: 239 [2024-11-17 00:25:57,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-17 00:25:57,270 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 442 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:57,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 188 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:25:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-17 00:25:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 191. [2024-11-17 00:25:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 184 states have (on average 1.1032608695652173) internal successors, (203), 190 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2024-11-17 00:25:57,275 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 62 [2024-11-17 00:25:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:57,277 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2024-11-17 00:25:57,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.813953488372093) internal successors, (164), 43 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2024-11-17 00:25:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-17 00:25:57,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:57,280 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:57,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:25:57,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:57,483 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:57,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1312331865, now seen corresponding path program 2 times [2024-11-17 00:25:57,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:57,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090733448] [2024-11-17 00:25:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:57,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:25:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090733448] [2024-11-17 00:25:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090733448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711261784] [2024-11-17 00:25:58,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:25:58,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:58,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:58,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:58,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:25:58,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:25:58,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:25:58,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 00:25:58,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:25:59,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:26:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:26:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711261784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:26:00,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:26:00,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2024-11-17 00:26:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131118284] [2024-11-17 00:26:00,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:26:00,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-17 00:26:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:26:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-17 00:26:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=4001, Unknown=0, NotChecked=0, Total=7140 [2024-11-17 00:26:00,197 INFO L87 Difference]: Start difference. First operand 191 states and 203 transitions. Second operand has 85 states, 85 states have (on average 3.9058823529411764) internal successors, (332), 85 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:26:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:26:01,681 INFO L93 Difference]: Finished difference Result 463 states and 541 transitions. [2024-11-17 00:26:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-17 00:26:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.9058823529411764) internal successors, (332), 85 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2024-11-17 00:26:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:26:01,684 INFO L225 Difference]: With dead ends: 463 [2024-11-17 00:26:01,684 INFO L226 Difference]: Without dead ends: 463 [2024-11-17 00:26:01,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4425 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4732, Invalid=7700, Unknown=0, NotChecked=0, Total=12432 [2024-11-17 00:26:01,687 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1295 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:26:01,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 284 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:26:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-17 00:26:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 359. [2024-11-17 00:26:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 352 states have (on average 1.09375) internal successors, (385), 358 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:26:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 385 transitions. [2024-11-17 00:26:01,696 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 385 transitions. Word has length 118 [2024-11-17 00:26:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:26:01,697 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 385 transitions. [2024-11-17 00:26:01,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.9058823529411764) internal successors, (332), 85 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:26:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 385 transitions. [2024-11-17 00:26:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-17 00:26:01,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:26:01,701 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:26:01,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 00:26:01,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:26:01,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:26:01,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:26:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1930423313, now seen corresponding path program 3 times [2024-11-17 00:26:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:26:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396878779] [2024-11-17 00:26:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:26:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:26:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:26:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5835 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:26:04,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:26:04,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396878779] [2024-11-17 00:26:04,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396878779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:26:04,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317921833] [2024-11-17 00:26:04,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:26:04,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:26:04,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:26:04,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:26:04,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:26:04,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:26:04,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:26:04,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 00:26:04,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:26:04,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:26:04,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-17 00:26:04,823 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 10 treesize of output 8 [2024-11-17 00:26:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5835 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 5671 trivial. 0 not checked. [2024-11-17 00:26:07,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:26:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5835 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 5671 trivial. 0 not checked. [2024-11-17 00:26:09,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317921833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:26:09,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:26:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 7, 7] total 70 [2024-11-17 00:26:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781577744] [2024-11-17 00:26:09,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:26:09,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-17 00:26:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:26:09,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-17 00:26:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1764, Invalid=3066, Unknown=0, NotChecked=0, Total=4830 [2024-11-17 00:26:09,409 INFO L87 Difference]: Start difference. First operand 359 states and 385 transitions. Second operand has 70 states, 70 states have (on average 3.8) internal successors, (266), 70 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:26:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:26:35,997 INFO L93 Difference]: Finished difference Result 479 states and 559 transitions. [2024-11-17 00:26:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2024-11-17 00:26:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.8) internal successors, (266), 70 states have internal predecessors, (266), 0 states have call successors, (0), 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 230 [2024-11-17 00:26:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:26:35,999 INFO L225 Difference]: With dead ends: 479 [2024-11-17 00:26:35,999 INFO L226 Difference]: Without dead ends: 479 [2024-11-17 00:26:36,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28712 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=22437, Invalid=60795, Unknown=0, NotChecked=0, Total=83232 [2024-11-17 00:26:36,007 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2012 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:26:36,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 187 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-17 00:26:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-17 00:26:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 363. [2024-11-17 00:26:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 356 states have (on average 1.0842696629213484) internal successors, (386), 362 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:26:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 386 transitions. [2024-11-17 00:26:36,014 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 386 transitions. Word has length 230 [2024-11-17 00:26:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:26:36,015 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 386 transitions. [2024-11-17 00:26:36,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.8) internal successors, (266), 70 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:26:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 386 transitions. [2024-11-17 00:26:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-17 00:26:36,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:26:36,018 INFO L215 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:26:36,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 00:26:36,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-17 00:26:36,219 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:26:36,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:26:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1635618355, now seen corresponding path program 4 times [2024-11-17 00:26:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:26:36,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498771100] [2024-11-17 00:26:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:26:36,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:26:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:26:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6086 backedges. 0 proven. 6050 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-17 00:26:38,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:26:38,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498771100] [2024-11-17 00:26:38,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498771100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:26:38,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96347946] [2024-11-17 00:26:38,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:26:38,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:26:38,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:26:38,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:26:38,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process