./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/960521-1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/960521-1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4591ef5e575ce80e216cc4837705a7c6f141a943d9af6ca1eb606ab877abd06b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:08:15,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:08:15,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:08:15,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:08:15,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:08:15,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:08:15,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:08:15,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:08:15,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:08:15,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:08:15,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:08:15,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:08:15,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:08:15,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:08:15,690 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:08:15,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:08:15,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:08:15,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:08:15,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:08:15,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:08:15,691 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:08:15,693 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:08:15,693 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:08:15,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:08:15,693 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:08:15,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:08:15,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:08:15,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:08:15,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:08:15,694 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:08:15,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:08:15,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:08:15,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:08:15,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:08:15,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:08:15,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:08:15,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:08:15,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:08:15,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:08:15,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:08:15,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:08:15,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:08:15,698 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4591ef5e575ce80e216cc4837705a7c6f141a943d9af6ca1eb606ab877abd06b [2024-11-10 15:08:15,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:08:15,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:08:15,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:08:15,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:08:15,984 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:08:15,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/960521-1-1.i [2024-11-10 15:08:17,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:08:17,684 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:08:17,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/960521-1-1.i [2024-11-10 15:08:17,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3600c16af/05f2ac46f3464a799616735aa7e300d6/FLAG4cdac10d9 [2024-11-10 15:08:17,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3600c16af/05f2ac46f3464a799616735aa7e300d6 [2024-11-10 15:08:17,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:08:17,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:08:17,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:08:17,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:08:17,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:08:17,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223eba55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:17, skipping insertion in model container [2024-11-10 15:08:17,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:17" (1/1) ... [2024-11-10 15:08:17,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:08:18,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:08:18,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:08:18,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:08:18,188 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:08:18,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18 WrapperNode [2024-11-10 15:08:18,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:08:18,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:08:18,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:08:18,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:08:18,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,227 INFO L138 Inliner]: procedures = 121, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-10 15:08:18,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:08:18,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:08:18,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:08:18,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:08:18,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,257 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 1, 3]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-10 15:08:18,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,268 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:08:18,277 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:08:18,278 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:08:18,278 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:08:18,278 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (1/1) ... [2024-11-10 15:08:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:08:18,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:18,323 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 15:08:18,325 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 15:08:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:08:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:08:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 15:08:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:08:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:08:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 15:08:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:08:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:08:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:08:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:08:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:08:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 15:08:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:08:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:08:18,559 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:08:18,561 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:08:18,780 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-10 15:08:18,784 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:08:18,798 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:08:18,798 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:08:18,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:08:18 BoogieIcfgContainer [2024-11-10 15:08:18,799 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:08:18,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:08:18,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:08:18,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:08:18,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:08:17" (1/3) ... [2024-11-10 15:08:18,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d57bd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:18, skipping insertion in model container [2024-11-10 15:08:18,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:18" (2/3) ... [2024-11-10 15:08:18,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d57bd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:18, skipping insertion in model container [2024-11-10 15:08:18,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:08:18" (3/3) ... [2024-11-10 15:08:18,808 INFO L112 eAbstractionObserver]: Analyzing ICFG 960521-1-1.i [2024-11-10 15:08:18,824 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:08:18,824 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-11-10 15:08:18,863 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:08:18,869 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;@6fab88d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:08:18,869 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 15:08:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 15:08:18,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:18,879 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 15:08:18,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:18,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash 91323, now seen corresponding path program 1 times [2024-11-10 15:08:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757500182] [2024-11-10 15:08:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:18,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,141 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 15:08:19,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757500182] [2024-11-10 15:08:19,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757500182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:08:19,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250053360] [2024-11-10 15:08:19,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:08:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:08:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:08:19,179 INFO L87 Difference]: Start difference. First operand has 59 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,230 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-10 15:08:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:08:19,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-10 15:08:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,239 INFO L225 Difference]: With dead ends: 58 [2024-11-10 15:08:19,239 INFO L226 Difference]: Without dead ends: 55 [2024-11-10 15:08:19,241 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 15:08:19,244 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-10 15:08:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-10 15:08:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-10 15:08:19,282 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 3 [2024-11-10 15:08:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,283 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-10 15:08:19,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-10 15:08:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 15:08:19,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 15:08:19,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:08:19,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:19,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,286 INFO L85 PathProgramCache]: Analyzing trace with hash 91324, now seen corresponding path program 1 times [2024-11-10 15:08:19,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316106166] [2024-11-10 15:08:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,478 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 15:08:19,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316106166] [2024-11-10 15:08:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316106166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:08:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421460836] [2024-11-10 15:08:19,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:08:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:08:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:08:19,484 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,517 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-10 15:08:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:08:19,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-10 15:08:19,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,520 INFO L225 Difference]: With dead ends: 54 [2024-11-10 15:08:19,520 INFO L226 Difference]: Without dead ends: 54 [2024-11-10 15:08:19,521 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 15:08:19,522 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-10 15:08:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-10 15:08:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.6) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-10 15:08:19,529 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 3 [2024-11-10 15:08:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,529 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-10 15:08:19,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-10 15:08:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:08:19,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:19,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:08:19,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:19,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1559808491, now seen corresponding path program 1 times [2024-11-10 15:08:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722952047] [2024-11-10 15:08:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,644 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 15:08:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722952047] [2024-11-10 15:08:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722952047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893067998] [2024-11-10 15:08:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:19,647 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:19,697 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-11-10 15:08:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:08:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-10 15:08:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:19,699 INFO L225 Difference]: With dead ends: 51 [2024-11-10 15:08:19,699 INFO L226 Difference]: Without dead ends: 51 [2024-11-10 15:08:19,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:19,700 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:19,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 48 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-10 15:08:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-10 15:08:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-10 15:08:19,706 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 7 [2024-11-10 15:08:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:19,706 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-10 15:08:19,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-10 15:08:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:08:19,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:19,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:19,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:08:19,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:19,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1559808490, now seen corresponding path program 1 times [2024-11-10 15:08:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:19,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651924741] [2024-11-10 15:08:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:19,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:19,945 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 15:08:19,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651924741] [2024-11-10 15:08:19,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651924741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:19,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:19,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:08:19,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773916642] [2024-11-10 15:08:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:19,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:08:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:08:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:19,949 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:20,067 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2024-11-10 15:08:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:08:20,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-10 15:08:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:20,068 INFO L225 Difference]: With dead ends: 58 [2024-11-10 15:08:20,068 INFO L226 Difference]: Without dead ends: 58 [2024-11-10 15:08:20,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:08:20,069 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 61 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:20,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 78 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-10 15:08:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-10 15:08:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.425) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-10 15:08:20,082 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 7 [2024-11-10 15:08:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:20,082 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-10 15:08:20,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-10 15:08:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 15:08:20,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:20,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:20,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:08:20,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:20,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1004547208, now seen corresponding path program 1 times [2024-11-10 15:08:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:20,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483894284] [2024-11-10 15:08:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,146 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 15:08:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483894284] [2024-11-10 15:08:20,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483894284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:20,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:20,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:08:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139576041] [2024-11-10 15:08:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:20,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:20,148 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:20,187 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-10 15:08:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-10 15:08:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:20,189 INFO L225 Difference]: With dead ends: 58 [2024-11-10 15:08:20,189 INFO L226 Difference]: Without dead ends: 58 [2024-11-10 15:08:20,190 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 15:08:20,191 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 62 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:20,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 79 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:20,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-10 15:08:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-10 15:08:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.4) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-10 15:08:20,204 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 10 [2024-11-10 15:08:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:20,204 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-10 15:08:20,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-10 15:08:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 15:08:20,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:20,205 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:20,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:08:20,206 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:20,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1045616776, now seen corresponding path program 1 times [2024-11-10 15:08:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785729890] [2024-11-10 15:08:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,545 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 15:08:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785729890] [2024-11-10 15:08:20,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785729890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:20,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180175357] [2024-11-10 15:08:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:20,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:20,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:20,550 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 15:08:20,552 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 15:08:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:20,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 15:08:20,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:20,715 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:08:20,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-10 15:08:20,961 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 15:08:20,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:21,122 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 15:08:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180175357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:21,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-10 15:08:21,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811938669] [2024-11-10 15:08:21,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:21,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:08:21,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:21,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:08:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:08:21,128 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:21,524 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-11-10 15:08:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:08:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-10 15:08:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:21,526 INFO L225 Difference]: With dead ends: 76 [2024-11-10 15:08:21,526 INFO L226 Difference]: Without dead ends: 76 [2024-11-10 15:08:21,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:08:21,528 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 229 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:21,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 182 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:08:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-10 15:08:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-11-10 15:08:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-10 15:08:21,539 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 11 [2024-11-10 15:08:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:21,540 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-10 15:08:21,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-10 15:08:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-10 15:08:21,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:21,540 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:21,559 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 15:08:21,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 15:08:21,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:21,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1427427030, now seen corresponding path program 1 times [2024-11-10 15:08:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941391905] [2024-11-10 15:08:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:21,781 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 15:08:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941391905] [2024-11-10 15:08:21,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941391905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:21,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:08:21,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:08:21,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844133411] [2024-11-10 15:08:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:21,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:08:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:08:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:08:21,786 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:21,847 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2024-11-10 15:08:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:08:21,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-10 15:08:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:21,850 INFO L225 Difference]: With dead ends: 72 [2024-11-10 15:08:21,850 INFO L226 Difference]: Without dead ends: 72 [2024-11-10 15:08:21,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:08:21,850 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:21,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 70 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:08:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-10 15:08:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-10 15:08:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2024-11-10 15:08:21,860 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 14 [2024-11-10 15:08:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:21,860 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2024-11-10 15:08:21,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2024-11-10 15:08:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-10 15:08:21,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:21,861 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:21,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 15:08:21,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:21,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1427427031, now seen corresponding path program 1 times [2024-11-10 15:08:21,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:21,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131476568] [2024-11-10 15:08:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:21,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:21,925 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 15:08:21,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:21,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131476568] [2024-11-10 15:08:21,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131476568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:21,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199899042] [2024-11-10 15:08:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:21,928 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 15:08:21,930 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 15:08:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:21,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:08:21,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:22,038 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 15:08:22,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:22,069 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 15:08:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199899042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:22,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 15:08:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18933994] [2024-11-10 15:08:22,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:22,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:08:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:08:22,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:08:22,072 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:22,141 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2024-11-10 15:08:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:08:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-10 15:08:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:22,143 INFO L225 Difference]: With dead ends: 72 [2024-11-10 15:08:22,143 INFO L226 Difference]: Without dead ends: 72 [2024-11-10 15:08:22,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:08:22,144 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 137 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:22,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 142 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-10 15:08:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-10 15:08:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-10 15:08:22,153 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 14 [2024-11-10 15:08:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:22,153 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-10 15:08:22,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-10 15:08:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-10 15:08:22,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:22,157 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-11-10 15:08:22,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:08:22,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-10 15:08:22,358 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:22,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:22,358 INFO L85 PathProgramCache]: Analyzing trace with hash 505148830, now seen corresponding path program 2 times [2024-11-10 15:08:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:22,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321779053] [2024-11-10 15:08:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:22,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:08:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321779053] [2024-11-10 15:08:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321779053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233638795] [2024-11-10 15:08:22,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:08:22,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:22,877 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 15:08:22,879 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 15:08:22,948 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:08:22,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:22,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 15:08:22,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:22,967 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:08:22,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-10 15:08:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:08:23,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:08:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233638795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:23,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:23,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 22 [2024-11-10 15:08:23,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316696268] [2024-11-10 15:08:23,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:23,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 15:08:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 15:08:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-11-10 15:08:23,672 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:24,451 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2024-11-10 15:08:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:08:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-10 15:08:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:24,452 INFO L225 Difference]: With dead ends: 120 [2024-11-10 15:08:24,452 INFO L226 Difference]: Without dead ends: 120 [2024-11-10 15:08:24,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 15:08:24,453 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 356 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:24,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 229 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:08:24,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-10 15:08:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-10 15:08:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 119 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2024-11-10 15:08:24,459 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 23 [2024-11-10 15:08:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:24,460 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2024-11-10 15:08:24,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2024-11-10 15:08:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 15:08:24,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:24,461 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-11-10 15:08:24,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 15:08:24,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:24,662 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:24,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash 197719786, now seen corresponding path program 3 times [2024-11-10 15:08:24,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251082862] [2024-11-10 15:08:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:08:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251082862] [2024-11-10 15:08:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251082862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:25,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878130275] [2024-11-10 15:08:25,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:08:25,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:25,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:25,386 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 15:08:25,390 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 15:08:25,457 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:08:25,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:25,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 15:08:25,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:25,481 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:08:25,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-10 15:08:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-10 15:08:26,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-10 15:08:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878130275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:26,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 23 [2024-11-10 15:08:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879384172] [2024-11-10 15:08:26,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:26,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 15:08:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 15:08:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:08:26,444 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:27,476 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2024-11-10 15:08:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 15:08:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-10 15:08:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:27,477 INFO L225 Difference]: With dead ends: 138 [2024-11-10 15:08:27,477 INFO L226 Difference]: Without dead ends: 138 [2024-11-10 15:08:27,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=302, Invalid=1180, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 15:08:27,478 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 433 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:27,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 393 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 15:08:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-10 15:08:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2024-11-10 15:08:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 133 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2024-11-10 15:08:27,487 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 47 [2024-11-10 15:08:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:27,488 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2024-11-10 15:08:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2024-11-10 15:08:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-10 15:08:27,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:27,489 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:27,506 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 15:08:27,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:27,690 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:27,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 33824225, now seen corresponding path program 2 times [2024-11-10 15:08:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:27,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754777704] [2024-11-10 15:08:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:08:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754777704] [2024-11-10 15:08:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754777704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933579892] [2024-11-10 15:08:27,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:08:27,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:27,978 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 15:08:27,979 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 15:08:28,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:08:28,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:28,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 15:08:28,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:28,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 15:08:28,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:08:28,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-11-10 15:08:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-10 15:08:28,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:08:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933579892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:08:28,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:08:28,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2024-11-10 15:08:28,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881797801] [2024-11-10 15:08:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:08:28,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:08:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:08:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:08:28,312 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:28,345 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2024-11-10 15:08:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:08:28,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-10 15:08:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:28,347 INFO L225 Difference]: With dead ends: 119 [2024-11-10 15:08:28,347 INFO L226 Difference]: Without dead ends: 119 [2024-11-10 15:08:28,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:08:28,348 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:28,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:08:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-10 15:08:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-10 15:08:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.131578947368421) internal successors, (129), 118 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2024-11-10 15:08:28,357 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 58 [2024-11-10 15:08:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:28,357 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2024-11-10 15:08:28,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2024-11-10 15:08:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-10 15:08:28,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:28,359 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:28,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:08:28,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 15:08:28,560 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:28,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:28,560 INFO L85 PathProgramCache]: Analyzing trace with hash 84342659, now seen corresponding path program 1 times [2024-11-10 15:08:28,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076279144] [2024-11-10 15:08:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:28,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076279144] [2024-11-10 15:08:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076279144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277566673] [2024-11-10 15:08:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:28,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:28,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:28,826 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 15:08:28,828 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 15:08:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:28,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 15:08:28,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:29,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277566673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:29,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:29,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2024-11-10 15:08:29,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38038972] [2024-11-10 15:08:29,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:29,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 15:08:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 15:08:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 15:08:29,609 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 43 states, 43 states have (on average 3.813953488372093) internal successors, (164), 43 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:30,148 INFO L93 Difference]: Finished difference Result 231 states and 267 transitions. [2024-11-10 15:08:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 15:08:30,149 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.813953488372093) internal successors, (164), 43 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-10 15:08:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:30,150 INFO L225 Difference]: With dead ends: 231 [2024-11-10 15:08:30,150 INFO L226 Difference]: Without dead ends: 231 [2024-11-10 15:08:30,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-10 15:08:30,152 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 634 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:30,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 188 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:08:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-10 15:08:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 183. [2024-11-10 15:08:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.095505617977528) internal successors, (195), 182 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 15:08:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 195 transitions. [2024-11-10 15:08:30,163 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 195 transitions. Word has length 62 [2024-11-10 15:08:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:30,163 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 195 transitions. [2024-11-10 15:08:30,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.813953488372093) internal successors, (164), 43 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 195 transitions. [2024-11-10 15:08:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-10 15:08:30,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:30,171 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:30,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:08:30,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:30,372 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:30,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1312331865, now seen corresponding path program 2 times [2024-11-10 15:08:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951473733] [2024-11-10 15:08:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:30,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951473733] [2024-11-10 15:08:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951473733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584146930] [2024-11-10 15:08:31,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:08:31,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:31,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:08:31,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:08:31,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:08:31,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:31,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 15:08:31,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:32,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584146930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:33,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2024-11-10 15:08:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195664053] [2024-11-10 15:08:33,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:33,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-10 15:08:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-10 15:08:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=4001, Unknown=0, NotChecked=0, Total=7140 [2024-11-10 15:08:33,018 INFO L87 Difference]: Start difference. First operand 183 states and 195 transitions. Second operand has 85 states, 85 states have (on average 3.9058823529411764) internal successors, (332), 85 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:08:34,765 INFO L93 Difference]: Finished difference Result 455 states and 533 transitions. [2024-11-10 15:08:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-10 15:08:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.9058823529411764) internal successors, (332), 85 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2024-11-10 15:08:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:08:34,768 INFO L225 Difference]: With dead ends: 455 [2024-11-10 15:08:34,768 INFO L226 Difference]: Without dead ends: 455 [2024-11-10 15:08:34,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4425 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4732, Invalid=7700, Unknown=0, NotChecked=0, Total=12432 [2024-11-10 15:08:34,771 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1173 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:08:34,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 230 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:08:34,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-10 15:08:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 351. [2024-11-10 15:08:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 346 states have (on average 1.0895953757225434) internal successors, (377), 350 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 15:08:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 377 transitions. [2024-11-10 15:08:34,778 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 377 transitions. Word has length 118 [2024-11-10 15:08:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:08:34,778 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 377 transitions. [2024-11-10 15:08:34,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.9058823529411764) internal successors, (332), 85 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:08:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 377 transitions. [2024-11-10 15:08:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-10 15:08:34,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:08:34,782 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:08:34,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 15:08:34,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:34,983 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:08:34,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:08:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1930423313, now seen corresponding path program 3 times [2024-11-10 15:08:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:08:34,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693949833] [2024-11-10 15:08:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:08:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:08:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:08:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5835 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:08:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:08:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693949833] [2024-11-10 15:08:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693949833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:08:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946156795] [2024-11-10 15:08:37,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:08:37,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:08:37,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:08:37,639 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:08:37,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:08:37,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:08:37,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:08:37,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 15:08:37,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:08:37,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:08:37,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 15:08:37,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 15:08:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5835 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 5671 trivial. 0 not checked. [2024-11-10 15:08:40,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:08:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5835 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 5671 trivial. 0 not checked. [2024-11-10 15:08:42,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946156795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:08:42,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:08:42,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 7, 7] total 70 [2024-11-10 15:08:42,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314966473] [2024-11-10 15:08:42,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:08:42,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-10 15:08:42,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:08:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-10 15:08:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1764, Invalid=3066, Unknown=0, NotChecked=0, Total=4830 [2024-11-10 15:08:42,354 INFO L87 Difference]: Start difference. First operand 351 states and 377 transitions. Second operand has 70 states, 70 states have (on average 3.8) internal successors, (266), 70 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:09:27,923 INFO L93 Difference]: Finished difference Result 471 states and 551 transitions. [2024-11-10 15:09:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2024-11-10 15:09:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.8) internal successors, (266), 70 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2024-11-10 15:09:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:09:27,925 INFO L225 Difference]: With dead ends: 471 [2024-11-10 15:09:27,925 INFO L226 Difference]: Without dead ends: 471 [2024-11-10 15:09:27,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28712 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=22437, Invalid=60795, Unknown=0, NotChecked=0, Total=83232 [2024-11-10 15:09:27,935 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1543 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 15:09:27,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 150 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 15:09:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-10 15:09:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 355. [2024-11-10 15:09:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 350 states have (on average 1.08) internal successors, (378), 354 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 378 transitions. [2024-11-10 15:09:27,941 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 378 transitions. Word has length 230 [2024-11-10 15:09:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:09:27,942 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 378 transitions. [2024-11-10 15:09:27,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.8) internal successors, (266), 70 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:09:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 378 transitions. [2024-11-10 15:09:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-10 15:09:27,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:09:27,948 INFO L215 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:09:27,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 15:09:28,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 15:09:28,148 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-10 15:09:28,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:09:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1635618355, now seen corresponding path program 4 times [2024-11-10 15:09:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:09:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770782940] [2024-11-10 15:09:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:09:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:09:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:09:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6086 backedges. 0 proven. 6050 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:09:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:09:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770782940] [2024-11-10 15:09:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770782940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:09:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237046361] [2024-11-10 15:09:30,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:09:30,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:09:30,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:09:30,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:09:30,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process