./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-15/array14_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-15/array14_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash a0f9dc1e3a944fe0c87fb9c3f72dec5466e715e61eb5b701f6540feca3c935ad --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:04:27,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:04:27,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-10 15:04:27,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:04:27,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:04:27,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:04:27,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:04:27,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:04:27,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:04:27,989 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:04:27,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:04:27,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:04:27,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:04:27,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:04:27,992 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:04:27,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:04:27,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:04:27,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:04:27,997 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:04:27,997 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:04:27,997 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:04:27,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:04:27,998 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:04:27,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:04:27,999 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:04:27,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:04:27,999 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:04:27,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:04:28,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:04:28,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:04:28,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:04:28,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:04:28,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:04:28,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:04:28,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:04:28,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:04:28,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:04:28,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:04:28,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:04:28,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0f9dc1e3a944fe0c87fb9c3f72dec5466e715e61eb5b701f6540feca3c935ad [2024-11-10 15:04:28,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:04:28,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:04:28,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:04:28,288 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:04:28,288 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:04:28,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array14_alloca.i [2024-11-10 15:04:29,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:04:30,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:04:30,058 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array14_alloca.i [2024-11-10 15:04:30,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afdef9d9/dc01ae2000f94746b5bfdecdb41235e6/FLAG81cad95f3 [2024-11-10 15:04:30,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afdef9d9/dc01ae2000f94746b5bfdecdb41235e6 [2024-11-10 15:04:30,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:04:30,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:04:30,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:04:30,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:04:30,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:04:30,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c1fbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30, skipping insertion in model container [2024-11-10 15:04:30,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:04:30,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:04:30,492 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:04:30,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:04:30,576 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:04:30,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30 WrapperNode [2024-11-10 15:04:30,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:04:30,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:04:30,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:04:30,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:04:30,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,611 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-10 15:04:30,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:04:30,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:04:30,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:04:30,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:04:30,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,636 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-10 15:04:30,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,643 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:04:30,648 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:04:30,648 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:04:30,648 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:04:30,649 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (1/1) ... [2024-11-10 15:04:30,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:04:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:30,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:04:30,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:04:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:04:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:04:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:04:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:04:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:04:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:04:30,854 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:04:30,856 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:04:31,025 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L368: call ULTIMATE.dealloc(main_#t~malloc206#1.base, main_#t~malloc206#1.offset);havoc main_#t~malloc206#1.base, main_#t~malloc206#1.offset; [2024-11-10 15:04:31,034 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-10 15:04:31,035 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:04:31,049 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:04:31,049 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:04:31,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:04:31 BoogieIcfgContainer [2024-11-10 15:04:31,050 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:04:31,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:04:31,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:04:31,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:04:31,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:04:30" (1/3) ... [2024-11-10 15:04:31,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ed6373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:04:31, skipping insertion in model container [2024-11-10 15:04:31,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:04:30" (2/3) ... [2024-11-10 15:04:31,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ed6373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:04:31, skipping insertion in model container [2024-11-10 15:04:31,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:04:31" (3/3) ... [2024-11-10 15:04:31,062 INFO L112 eAbstractionObserver]: Analyzing ICFG array14_alloca.i [2024-11-10 15:04:31,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:04:31,077 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-10 15:04:31,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:04:31,121 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;@589de216, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:04:31,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-10 15:04:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:04:31,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:31,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:31,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:31,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 30531590, now seen corresponding path program 1 times [2024-11-10 15:04:31,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:31,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306062025] [2024-11-10 15:04:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306062025] [2024-11-10 15:04:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306062025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:31,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:04:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:04:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621717577] [2024-11-10 15:04:31,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:31,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:04:31,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:04:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:04:31,442 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-10 15:04:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:31,484 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-10 15:04:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:04:31,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2024-11-10 15:04:31,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:31,493 INFO L225 Difference]: With dead ends: 33 [2024-11-10 15:04:31,493 INFO L226 Difference]: Without dead ends: 30 [2024-11-10 15:04:31,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:04:31,499 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:31,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 30 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:04:31,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-10 15:04:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-10 15:04:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.619047619047619) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-10 15:04:31,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 7 [2024-11-10 15:04:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:31,527 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-10 15:04:31,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-10 15:04:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-10 15:04:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:04:31,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:31,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:31,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:04:31,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:31,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash 946569652, now seen corresponding path program 1 times [2024-11-10 15:04:31,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:31,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196224889] [2024-11-10 15:04:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:31,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196224889] [2024-11-10 15:04:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196224889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:31,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:04:31,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:04:31,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858943649] [2024-11-10 15:04:31,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:31,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:04:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:04:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:04:31,713 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:31,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:31,788 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-10 15:04:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:04:31,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 15:04:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:31,790 INFO L225 Difference]: With dead ends: 26 [2024-11-10 15:04:31,790 INFO L226 Difference]: Without dead ends: 26 [2024-11-10 15:04:31,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:04:31,793 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:31,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:04:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-10 15:04:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-10 15:04:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 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) [2024-11-10 15:04:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-10 15:04:31,799 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2024-11-10 15:04:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:31,800 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-10 15:04:31,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-10 15:04:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:04:31,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:31,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:31,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:04:31,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:31,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 946569653, now seen corresponding path program 1 times [2024-11-10 15:04:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:31,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745395615] [2024-11-10 15:04:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:32,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:32,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745395615] [2024-11-10 15:04:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745395615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:32,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:04:32,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:04:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095399000] [2024-11-10 15:04:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:32,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:04:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:04:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:04:32,114 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:32,265 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-10 15:04:32,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:04:32,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 15:04:32,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:32,267 INFO L225 Difference]: With dead ends: 53 [2024-11-10 15:04:32,268 INFO L226 Difference]: Without dead ends: 53 [2024-11-10 15:04:32,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:04:32,269 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:32,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:04:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-10 15:04:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2024-11-10 15:04:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-10 15:04:32,280 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 8 [2024-11-10 15:04:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:32,281 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-10 15:04:32,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,281 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-10 15:04:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:04:32,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:32,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:32,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:04:32,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:32,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 975198804, now seen corresponding path program 1 times [2024-11-10 15:04:32,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:32,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671365263] [2024-11-10 15:04:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:32,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:32,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:32,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671365263] [2024-11-10 15:04:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671365263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:32,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:04:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:04:32,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096113941] [2024-11-10 15:04:32,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:32,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:04:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:32,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:04:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:04:32,508 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:32,600 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-10 15:04:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:04:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 15:04:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:32,603 INFO L225 Difference]: With dead ends: 43 [2024-11-10 15:04:32,603 INFO L226 Difference]: Without dead ends: 43 [2024-11-10 15:04:32,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:04:32,605 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 96 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:32,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 29 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:04:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-10 15:04:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-11-10 15:04:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-10 15:04:32,615 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2024-11-10 15:04:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:32,616 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-10 15:04:32,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-10 15:04:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-10 15:04:32,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:32,617 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:32,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:04:32,617 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:32,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash 723746035, now seen corresponding path program 1 times [2024-11-10 15:04:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260565335] [2024-11-10 15:04:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:32,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260565335] [2024-11-10 15:04:32,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260565335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:04:32,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296571176] [2024-11-10 15:04:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:32,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:32,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:04:32,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:04:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:32,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:04:32,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:04:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:32,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:04:32,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296571176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:32,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:04:32,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 15:04:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163673178] [2024-11-10 15:04:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:32,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:04:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:32,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:04:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:04:32,868 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:32,913 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-11-10 15:04:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:04:32,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-10 15:04:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:32,915 INFO L225 Difference]: With dead ends: 51 [2024-11-10 15:04:32,915 INFO L226 Difference]: Without dead ends: 51 [2024-11-10 15:04:32,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:04:32,917 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:32,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:04:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-10 15:04:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-11-10 15:04:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.275) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-11-10 15:04:32,924 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 15 [2024-11-10 15:04:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:32,924 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-11-10 15:04:32,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-11-10 15:04:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-10 15:04:32,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:32,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:32,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 15:04:33,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:33,128 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:33,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash 430343028, now seen corresponding path program 1 times [2024-11-10 15:04:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:33,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341052964] [2024-11-10 15:04:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341052964] [2024-11-10 15:04:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341052964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:04:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908027765] [2024-11-10 15:04:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:33,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:33,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:33,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:04:33,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:04:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:33,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 15:04:33,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:04:33,608 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 10 treesize of output 9 [2024-11-10 15:04:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:33,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:04:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908027765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:04:34,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:04:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-10 15:04:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346320857] [2024-11-10 15:04:34,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:04:34,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 15:04:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 15:04:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:04:34,330 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:34,525 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-10 15:04:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:04:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-10 15:04:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:34,526 INFO L225 Difference]: With dead ends: 43 [2024-11-10 15:04:34,526 INFO L226 Difference]: Without dead ends: 43 [2024-11-10 15:04:34,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:04:34,528 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:34,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 96 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:04:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-10 15:04:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2024-11-10 15:04:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-10 15:04:34,537 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 15 [2024-11-10 15:04:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:34,538 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-10 15:04:34,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-10 15:04:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 15:04:34,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:34,539 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:34,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 15:04:34,740 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,SelfDestructingSolverStorable5 [2024-11-10 15:04:34,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:34,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash 380082308, now seen corresponding path program 1 times [2024-11-10 15:04:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214360162] [2024-11-10 15:04:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:34,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214360162] [2024-11-10 15:04:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214360162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:04:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729175647] [2024-11-10 15:04:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:34,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:34,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:34,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:04:34,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:04:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:34,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:04:34,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:04:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:34,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:04:35,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-10 15:04:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729175647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:04:35,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:04:35,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-10 15:04:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824217601] [2024-11-10 15:04:35,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:04:35,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:04:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:04:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:04:35,072 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:35,170 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-11-10 15:04:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:04:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-10 15:04:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:35,172 INFO L225 Difference]: With dead ends: 47 [2024-11-10 15:04:35,172 INFO L226 Difference]: Without dead ends: 47 [2024-11-10 15:04:35,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:04:35,173 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:35,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 87 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:04:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-10 15:04:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-11-10 15:04:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-10 15:04:35,182 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18 [2024-11-10 15:04:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:35,183 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-10 15:04:35,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-10 15:04:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-10 15:04:35,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:35,186 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:35,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:04:35,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:35,391 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:35,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash 186843327, now seen corresponding path program 1 times [2024-11-10 15:04:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247287437] [2024-11-10 15:04:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:04:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247287437] [2024-11-10 15:04:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247287437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:35,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:04:35,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:04:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259761523] [2024-11-10 15:04:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:35,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:04:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:04:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:04:35,447 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:35,470 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-10 15:04:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:04:35,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-10 15:04:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:35,472 INFO L225 Difference]: With dead ends: 41 [2024-11-10 15:04:35,472 INFO L226 Difference]: Without dead ends: 41 [2024-11-10 15:04:35,472 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 [2024-11-10 15:04:35,473 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:35,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 33 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:04:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-10 15:04:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-10 15:04:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-10 15:04:35,477 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 20 [2024-11-10 15:04:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:35,477 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-10 15:04:35,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-10 15:04:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 15:04:35,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:35,478 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:35,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 15:04:35,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:35,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash -800658361, now seen corresponding path program 1 times [2024-11-10 15:04:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262822859] [2024-11-10 15:04:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:04:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262822859] [2024-11-10 15:04:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262822859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:04:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250788430] [2024-11-10 15:04:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:35,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:35,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:04:35,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:04:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:35,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 15:04:35,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:04:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:04:35,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:04:35,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250788430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:35,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:04:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-10 15:04:35,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706563477] [2024-11-10 15:04:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:35,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:04:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:04:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:04:35,586 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:35,605 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-10 15:04:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:04:35,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-10 15:04:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:35,606 INFO L225 Difference]: With dead ends: 43 [2024-11-10 15:04:35,606 INFO L226 Difference]: Without dead ends: 43 [2024-11-10 15:04:35,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:04:35,607 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:35,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:04:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-10 15:04:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-10 15:04:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-10 15:04:35,609 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 22 [2024-11-10 15:04:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:35,611 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-10 15:04:35,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-10 15:04:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 15:04:35,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:35,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:35,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:04:35,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:35,819 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:35,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -800628570, now seen corresponding path program 1 times [2024-11-10 15:04:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185937877] [2024-11-10 15:04:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:04:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185937877] [2024-11-10 15:04:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185937877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:04:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144670053] [2024-11-10 15:04:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:35,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:35,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:35,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:04:35,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:04:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:36,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:04:36,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:04:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:04:36,073 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:04:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144670053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:36,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:04:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-10 15:04:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486530212] [2024-11-10 15:04:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:36,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:04:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:04:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:04:36,075 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:36,109 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2024-11-10 15:04:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:04:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-10 15:04:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:36,111 INFO L225 Difference]: With dead ends: 52 [2024-11-10 15:04:36,111 INFO L226 Difference]: Without dead ends: 52 [2024-11-10 15:04:36,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:04:36,112 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:36,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 68 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:04:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-10 15:04:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-10 15:04:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-10 15:04:36,118 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 22 [2024-11-10 15:04:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:36,119 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-10 15:04:36,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-10 15:04:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 15:04:36,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:36,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:36,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 15:04:36,321 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,SelfDestructingSolverStorable9 [2024-11-10 15:04:36,321 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:36,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1209452795, now seen corresponding path program 1 times [2024-11-10 15:04:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032409369] [2024-11-10 15:04:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:04:36,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:36,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032409369] [2024-11-10 15:04:36,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032409369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:04:36,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076382865] [2024-11-10 15:04:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:36,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:04:36,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:04:36,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:04:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:36,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:04:36,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:04:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:36,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:04:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:04:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076382865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:04:36,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:04:36,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-10 15:04:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121721297] [2024-11-10 15:04:36,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:04:36,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 15:04:36,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 15:04:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:04:36,625 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:36,863 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2024-11-10 15:04:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 15:04:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-10 15:04:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:36,864 INFO L225 Difference]: With dead ends: 72 [2024-11-10 15:04:36,864 INFO L226 Difference]: Without dead ends: 72 [2024-11-10 15:04:36,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-10 15:04:36,865 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:36,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 111 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:04:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-10 15:04:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2024-11-10 15:04:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-10 15:04:36,869 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 22 [2024-11-10 15:04:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:36,870 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-10 15:04:36,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-10 15:04:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 15:04:36,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:04:36,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:36,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 15:04:37,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:04:37,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-10 15:04:37,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:04:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -633573438, now seen corresponding path program 1 times [2024-11-10 15:04:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:04:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797828802] [2024-11-10 15:04:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:04:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:04:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:04:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:04:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:04:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797828802] [2024-11-10 15:04:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797828802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:04:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:04:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:04:37,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087654333] [2024-11-10 15:04:37,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:04:37,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:04:37,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:04:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:04:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:04:37,160 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:04:37,173 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-11-10 15:04:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:04:37,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-10 15:04:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:04:37,174 INFO L225 Difference]: With dead ends: 54 [2024-11-10 15:04:37,174 INFO L226 Difference]: Without dead ends: 0 [2024-11-10 15:04:37,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:04:37,174 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:04:37,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:04:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-10 15:04:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-10 15:04:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 15:04:37,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2024-11-10 15:04:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:04:37,175 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 15:04:37,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:04:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-10 15:04:37,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-10 15:04:37,178 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (8 of 9 remaining) [2024-11-10 15:04:37,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-10 15:04:37,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-10 15:04:37,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-10 15:04:37,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-10 15:04:37,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-10 15:04:37,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-10 15:04:37,180 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-10 15:04:37,180 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 9 remaining) [2024-11-10 15:04:37,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 15:04:37,189 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:04:37,192 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 15:04:37,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:04:37 BoogieIcfgContainer [2024-11-10 15:04:37,201 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 15:04:37,201 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 15:04:37,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 15:04:37,201 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 15:04:37,202 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:04:31" (3/4) ... [2024-11-10 15:04:37,204 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 15:04:37,210 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-10 15:04:37,210 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-10 15:04:37,210 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 15:04:37,210 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 15:04:37,290 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 15:04:37,291 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 15:04:37,291 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 15:04:37,291 INFO L158 Benchmark]: Toolchain (without parser) took 7202.78ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 112.0MB in the beginning and 111.0MB in the end (delta: 975.8kB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,291 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 167.8MB. Free memory was 132.1MB in the beginning and 131.8MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:04:37,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.16ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 91.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.68ms. Allocated memory is still 167.8MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,292 INFO L158 Benchmark]: Boogie Preprocessor took 34.42ms. Allocated memory is still 167.8MB. Free memory was 89.4MB in the beginning and 87.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,292 INFO L158 Benchmark]: IcfgBuilder took 403.62ms. Allocated memory is still 167.8MB. Free memory was 87.7MB in the beginning and 73.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,293 INFO L158 Benchmark]: TraceAbstraction took 6146.63ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 73.1MB in the beginning and 116.3MB in the end (delta: -43.2MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,293 INFO L158 Benchmark]: Witness Printer took 89.48ms. Allocated memory is still 239.1MB. Free memory was 116.3MB in the beginning and 111.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 15:04:37,295 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 167.8MB. Free memory was 132.1MB in the beginning and 131.8MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.16ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 91.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.68ms. Allocated memory is still 167.8MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.42ms. Allocated memory is still 167.8MB. Free memory was 89.4MB in the beginning and 87.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 403.62ms. Allocated memory is still 167.8MB. Free memory was 87.7MB in the beginning and 73.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6146.63ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 73.1MB in the beginning and 116.3MB in the end (delta: -43.2MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 89.48ms. Allocated memory is still 239.1MB. Free memory was 116.3MB in the beginning and 111.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 364]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 744 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 511 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 696 IncrementalHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 233 mSDtfsCounter, 696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 145 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=11, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 69 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 303 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 2668 SizeOfPredicates, 12 NumberOfNonLiveVariables, 386 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 37/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 15:04:37,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE