./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/memsafety-ext/tree_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/memsafety-ext/tree_stack.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 882715956aab9fc92fb711e54ed51d64e792658e5015ed6151f84b857454f04c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:42:45,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:42:45,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:42:45,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:42:45,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:42:45,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:42:45,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:42:45,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:42:45,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:42:45,837 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:42:45,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:42:45,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:42:45,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:42:45,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:42:45,838 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:42:45,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:42:45,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:42:45,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:42:45,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:42:45,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:42:45,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:42:45,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:42:45,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:42:45,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:42:45,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:42:45,842 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 882715956aab9fc92fb711e54ed51d64e792658e5015ed6151f84b857454f04c [2025-04-30 10:42:46,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:42:46,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:42:46,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:42:46,083 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:42:46,083 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:42:46,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_stack.i [2025-04-30 10:42:47,384 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c01b7fb/ad16a20956a54c9ab0f9a6136a27d684/FLAG7a67ab6af [2025-04-30 10:42:47,624 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:42:47,624 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memsafety-ext/tree_stack.i [2025-04-30 10:42:47,638 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c01b7fb/ad16a20956a54c9ab0f9a6136a27d684/FLAG7a67ab6af [2025-04-30 10:42:48,434 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c01b7fb/ad16a20956a54c9ab0f9a6136a27d684 [2025-04-30 10:42:48,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:42:48,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:42:48,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:42:48,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:42:48,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:42:48,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ed087f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48, skipping insertion in model container [2025-04-30 10:42:48,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:42:48,732 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:42:48,744 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:42:48,799 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:42:48,818 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:42:48,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48 WrapperNode [2025-04-30 10:42:48,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:42:48,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:42:48,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:42:48,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:42:48,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,850 INFO L138 Inliner]: procedures = 123, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 138 [2025-04-30 10:42:48,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:42:48,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:42:48,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:42:48,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:42:48,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,881 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 14 writes are split as follows [0, 14]. [2025-04-30 10:42:48,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,886 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:42:48,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:42:48,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:42:48,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:42:48,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (1/1) ... [2025-04-30 10:42:48,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:42:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:42:48,924 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) [2025-04-30 10:42:48,926 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 [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-30 10:42:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:42:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:42:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:42:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:42:49,045 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:42:49,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:42:49,397 INFO L? ?]: Removed 157 outVars from TransFormulas that were not future-live. [2025-04-30 10:42:49,398 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:42:49,406 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:42:49,411 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-30 10:42:49,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:42:49 BoogieIcfgContainer [2025-04-30 10:42:49,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:42:49,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:42:49,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:42:49,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:42:49,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:42:48" (1/3) ... [2025-04-30 10:42:49,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e1c9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:42:49, skipping insertion in model container [2025-04-30 10:42:49,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:48" (2/3) ... [2025-04-30 10:42:49,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e1c9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:42:49, skipping insertion in model container [2025-04-30 10:42:49,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:42:49" (3/3) ... [2025-04-30 10:42:49,421 INFO L128 eAbstractionObserver]: Analyzing ICFG tree_stack.i [2025-04-30 10:42:49,432 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:42:49,434 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG tree_stack.i that has 1 procedures, 139 locations, 151 edges, 1 initial locations, 3 loop locations, and 67 error locations. [2025-04-30 10:42:49,468 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:42:49,478 INFO L340 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;@627e7da1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:42:49,479 INFO L341 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2025-04-30 10:42:49,482 INFO L278 IsEmpty]: Start isEmpty. Operand has 139 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 138 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,485 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-30 10:42:49,486 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,486 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-30 10:42:49,486 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:49,489 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2025-04-30 10:42:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,495 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303357988] [2025-04-30 10:42:49,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:42:49,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:42:49,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,624 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303357988] [2025-04-30 10:42:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303357988] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249701257] [2025-04-30 10:42:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,628 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:49,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:49,647 INFO L87 Difference]: Start difference. First operand has 139 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 138 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2025-04-30 10:42:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,758 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2025-04-30 10:42:49,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:49,760 INFO L79 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 [2025-04-30 10:42:49,760 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,767 INFO L225 Difference]: With dead ends: 137 [2025-04-30 10:42:49,767 INFO L226 Difference]: Without dead ends: 135 [2025-04-30 10:42:49,769 INFO L436 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 [2025-04-30 10:42:49,772 INFO L437 NwaCegarLoop]: 103 mSDtfsCounter, 84 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:49,772 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 130 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-04-30 10:42:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2025-04-30 10:42:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 134 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2025-04-30 10:42:49,800 INFO L79 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 3 [2025-04-30 10:42:49,800 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,800 INFO L485 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2025-04-30 10:42:49,800 INFO L486 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) [2025-04-30 10:42:49,801 INFO L278 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2025-04-30 10:42:49,801 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-30 10:42:49,801 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,801 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-30 10:42:49,802 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:42:49,802 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:49,802 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2025-04-30 10:42:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,802 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063226712] [2025-04-30 10:42:49,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:42:49,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:42:49,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:49,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,866 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063226712] [2025-04-30 10:42:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063226712] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435338574] [2025-04-30 10:42:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,867 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:49,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:49,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:49,868 INFO L87 Difference]: Start difference. First operand 135 states and 145 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) [2025-04-30 10:42:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,966 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2025-04-30 10:42:49,966 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:49,967 INFO L79 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 [2025-04-30 10:42:49,967 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,967 INFO L225 Difference]: With dead ends: 133 [2025-04-30 10:42:49,967 INFO L226 Difference]: Without dead ends: 133 [2025-04-30 10:42:49,968 INFO L436 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 [2025-04-30 10:42:49,968 INFO L437 NwaCegarLoop]: 101 mSDtfsCounter, 84 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:49,968 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 132 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-04-30 10:42:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2025-04-30 10:42:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 132 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2025-04-30 10:42:49,973 INFO L79 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 3 [2025-04-30 10:42:49,973 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,973 INFO L485 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2025-04-30 10:42:49,973 INFO L486 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) [2025-04-30 10:42:49,974 INFO L278 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2025-04-30 10:42:49,974 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:42:49,974 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,974 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:49,974 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:42:49,974 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:49,976 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 59359533, now seen corresponding path program 1 times [2025-04-30 10:42:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,976 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854859098] [2025-04-30 10:42:49,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:42:50,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:42:50,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,078 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854859098] [2025-04-30 10:42:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854859098] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:50,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057082472] [2025-04-30 10:42:50,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,079 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:50,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:50,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:50,080 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,171 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2025-04-30 10:42:50,171 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:50,171 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:42:50,172 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,172 INFO L225 Difference]: With dead ends: 133 [2025-04-30 10:42:50,172 INFO L226 Difference]: Without dead ends: 133 [2025-04-30 10:42:50,172 INFO L436 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 [2025-04-30 10:42:50,173 INFO L437 NwaCegarLoop]: 133 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,173 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-04-30 10:42:50,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2025-04-30 10:42:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 2.013888888888889) internal successors, (145), 132 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2025-04-30 10:42:50,177 INFO L79 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 8 [2025-04-30 10:42:50,177 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,178 INFO L485 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2025-04-30 10:42:50,178 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,178 INFO L278 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2025-04-30 10:42:50,178 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:42:50,178 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,178 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,178 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:42:50,178 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:50,178 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash 59359534, now seen corresponding path program 1 times [2025-04-30 10:42:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,178 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936095101] [2025-04-30 10:42:50,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:42:50,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:42:50,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,273 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936095101] [2025-04-30 10:42:50,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936095101] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29837801] [2025-04-30 10:42:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,274 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:50,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:50,275 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,349 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2025-04-30 10:42:50,349 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:50,350 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:42:50,350 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,350 INFO L225 Difference]: With dead ends: 131 [2025-04-30 10:42:50,351 INFO L226 Difference]: Without dead ends: 131 [2025-04-30 10:42:50,351 INFO L436 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 [2025-04-30 10:42:50,351 INFO L437 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,351 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 204 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-04-30 10:42:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2025-04-30 10:42:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 130 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2025-04-30 10:42:50,356 INFO L79 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 8 [2025-04-30 10:42:50,356 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,356 INFO L485 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2025-04-30 10:42:50,356 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,356 INFO L278 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2025-04-30 10:42:50,356 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:42:50,356 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,357 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,357 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:42:50,357 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:50,357 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,357 INFO L85 PathProgramCache]: Analyzing trace with hash 59353998, now seen corresponding path program 1 times [2025-04-30 10:42:50,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,357 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499530973] [2025-04-30 10:42:50,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:42:50,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:42:50,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,417 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499530973] [2025-04-30 10:42:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499530973] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930880041] [2025-04-30 10:42:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,417 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:50,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:50,417 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,565 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2025-04-30 10:42:50,566 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:50,566 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:42:50,566 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,567 INFO L225 Difference]: With dead ends: 132 [2025-04-30 10:42:50,567 INFO L226 Difference]: Without dead ends: 132 [2025-04-30 10:42:50,567 INFO L436 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 [2025-04-30 10:42:50,567 INFO L437 NwaCegarLoop]: 72 mSDtfsCounter, 142 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,567 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 112 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-04-30 10:42:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 117. [2025-04-30 10:42:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.7671232876712328) internal successors, (129), 116 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) [2025-04-30 10:42:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2025-04-30 10:42:50,577 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 8 [2025-04-30 10:42:50,577 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,577 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2025-04-30 10:42:50,577 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,577 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2025-04-30 10:42:50,577 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:42:50,577 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,577 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,578 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:42:50,578 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:50,578 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash 59353999, now seen corresponding path program 1 times [2025-04-30 10:42:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,578 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115241159] [2025-04-30 10:42:50,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:42:50,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:42:50,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,669 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115241159] [2025-04-30 10:42:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115241159] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675598629] [2025-04-30 10:42:50,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,669 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:50,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:50,670 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,866 INFO L93 Difference]: Finished difference Result 169 states and 188 transitions. [2025-04-30 10:42:50,866 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:50,866 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:42:50,866 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,867 INFO L225 Difference]: With dead ends: 169 [2025-04-30 10:42:50,867 INFO L226 Difference]: Without dead ends: 169 [2025-04-30 10:42:50,867 INFO L436 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 [2025-04-30 10:42:50,869 INFO L437 NwaCegarLoop]: 93 mSDtfsCounter, 161 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,869 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 176 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-04-30 10:42:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 148. [2025-04-30 10:42:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.6538461538461537) internal successors, (172), 147 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2025-04-30 10:42:50,874 INFO L79 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 8 [2025-04-30 10:42:50,874 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,874 INFO L485 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2025-04-30 10:42:50,874 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,874 INFO L278 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2025-04-30 10:42:50,874 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-30 10:42:50,874 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,874 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-30 10:42:50,874 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:50,874 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1146570978, now seen corresponding path program 1 times [2025-04-30 10:42:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,875 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003774997] [2025-04-30 10:42:50,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:42:50,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:42:50,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:50,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,904 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003774997] [2025-04-30 10:42:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003774997] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720492700] [2025-04-30 10:42:50,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,905 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:50,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:50,905 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,920 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2025-04-30 10:42:50,920 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:50,920 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2025-04-30 10:42:50,920 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,922 INFO L225 Difference]: With dead ends: 148 [2025-04-30 10:42:50,922 INFO L226 Difference]: Without dead ends: 148 [2025-04-30 10:42:50,922 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:50,922 INFO L437 NwaCegarLoop]: 120 mSDtfsCounter, 1 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,922 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 230 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-04-30 10:42:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2025-04-30 10:42:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.6442307692307692) internal successors, (171), 147 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2025-04-30 10:42:50,926 INFO L79 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 11 [2025-04-30 10:42:50,926 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,926 INFO L485 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2025-04-30 10:42:50,926 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:50,926 INFO L278 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2025-04-30 10:42:50,927 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-30 10:42:50,927 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,927 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,927 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-30 10:42:50,927 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:50,927 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1950043807, now seen corresponding path program 1 times [2025-04-30 10:42:50,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,927 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609230230] [2025-04-30 10:42:50,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-30 10:42:50,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-30 10:42:50,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:50,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609230230] [2025-04-30 10:42:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609230230] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560327230] [2025-04-30 10:42:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,992 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:50,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:50,992 INFO L87 Difference]: Start difference. First operand 148 states and 171 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) [2025-04-30 10:42:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:51,108 INFO L93 Difference]: Finished difference Result 155 states and 180 transitions. [2025-04-30 10:42:51,108 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:51,108 INFO L79 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 13 [2025-04-30 10:42:51,109 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:51,109 INFO L225 Difference]: With dead ends: 155 [2025-04-30 10:42:51,109 INFO L226 Difference]: Without dead ends: 155 [2025-04-30 10:42:51,109 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:51,110 INFO L437 NwaCegarLoop]: 104 mSDtfsCounter, 21 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:51,110 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 229 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-04-30 10:42:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2025-04-30 10:42:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 106 states have (on average 1.5943396226415094) internal successors, (169), 144 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 169 transitions. [2025-04-30 10:42:51,114 INFO L79 Accepts]: Start accepts. Automaton has 145 states and 169 transitions. Word has length 13 [2025-04-30 10:42:51,114 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:51,114 INFO L485 AbstractCegarLoop]: Abstraction has 145 states and 169 transitions. [2025-04-30 10:42:51,114 INFO L486 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) [2025-04-30 10:42:51,114 INFO L278 IsEmpty]: Start isEmpty. Operand 145 states and 169 transitions. [2025-04-30 10:42:51,114 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-30 10:42:51,114 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:51,114 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:51,114 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-30 10:42:51,115 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:51,115 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1950043808, now seen corresponding path program 1 times [2025-04-30 10:42:51,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:51,115 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350149528] [2025-04-30 10:42:51,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:51,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:51,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-30 10:42:51,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-30 10:42:51,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:51,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:51,213 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350149528] [2025-04-30 10:42:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350149528] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:51,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270447939] [2025-04-30 10:42:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:51,214 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:51,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:51,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:51,215 INFO L87 Difference]: Start difference. First operand 145 states and 169 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) [2025-04-30 10:42:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:51,321 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2025-04-30 10:42:51,322 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:51,322 INFO L79 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 13 [2025-04-30 10:42:51,322 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:51,322 INFO L225 Difference]: With dead ends: 157 [2025-04-30 10:42:51,322 INFO L226 Difference]: Without dead ends: 157 [2025-04-30 10:42:51,323 INFO L436 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 [2025-04-30 10:42:51,323 INFO L437 NwaCegarLoop]: 105 mSDtfsCounter, 20 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:51,323 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 207 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-30 10:42:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2025-04-30 10:42:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.5555555555555556) internal successors, (182), 151 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 182 transitions. [2025-04-30 10:42:51,330 INFO L79 Accepts]: Start accepts. Automaton has 152 states and 182 transitions. Word has length 13 [2025-04-30 10:42:51,330 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:51,330 INFO L485 AbstractCegarLoop]: Abstraction has 152 states and 182 transitions. [2025-04-30 10:42:51,330 INFO L486 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) [2025-04-30 10:42:51,330 INFO L278 IsEmpty]: Start isEmpty. Operand 152 states and 182 transitions. [2025-04-30 10:42:51,331 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-30 10:42:51,331 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:51,331 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:51,332 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-30 10:42:51,332 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:51,332 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash 27527865, now seen corresponding path program 1 times [2025-04-30 10:42:51,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:51,332 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871830093] [2025-04-30 10:42:51,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:51,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:51,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-30 10:42:51,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-30 10:42:51,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:51,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:51,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:51,386 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871830093] [2025-04-30 10:42:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871830093] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782896184] [2025-04-30 10:42:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:51,387 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:51,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:51,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:51,388 INFO L87 Difference]: Start difference. First operand 152 states and 182 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:51,444 INFO L93 Difference]: Finished difference Result 158 states and 184 transitions. [2025-04-30 10:42:51,444 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:42:51,444 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-30 10:42:51,444 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:51,444 INFO L225 Difference]: With dead ends: 158 [2025-04-30 10:42:51,445 INFO L226 Difference]: Without dead ends: 158 [2025-04-30 10:42:51,445 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:51,445 INFO L437 NwaCegarLoop]: 108 mSDtfsCounter, 19 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:51,445 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 289 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-04-30 10:42:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2025-04-30 10:42:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 118 states have (on average 1.5508474576271187) internal successors, (183), 152 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 183 transitions. [2025-04-30 10:42:51,448 INFO L79 Accepts]: Start accepts. Automaton has 153 states and 183 transitions. Word has length 16 [2025-04-30 10:42:51,448 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:51,448 INFO L485 AbstractCegarLoop]: Abstraction has 153 states and 183 transitions. [2025-04-30 10:42:51,448 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,449 INFO L278 IsEmpty]: Start isEmpty. Operand 153 states and 183 transitions. [2025-04-30 10:42:51,449 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-30 10:42:51,449 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:51,449 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:51,449 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-30 10:42:51,449 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:51,449 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash -675554533, now seen corresponding path program 1 times [2025-04-30 10:42:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:51,450 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369155971] [2025-04-30 10:42:51,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:51,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-30 10:42:51,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-30 10:42:51,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:51,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:51,482 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369155971] [2025-04-30 10:42:51,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369155971] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:51,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858531842] [2025-04-30 10:42:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:51,483 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:51,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:51,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:51,483 INFO L87 Difference]: Start difference. First operand 153 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:51,489 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2025-04-30 10:42:51,489 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:51,489 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-30 10:42:51,489 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:51,490 INFO L225 Difference]: With dead ends: 155 [2025-04-30 10:42:51,490 INFO L226 Difference]: Without dead ends: 155 [2025-04-30 10:42:51,490 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:51,490 INFO L437 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:51,490 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-04-30 10:42:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2025-04-30 10:42:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 120 states have (on average 1.5416666666666667) internal successors, (185), 154 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2025-04-30 10:42:51,493 INFO L79 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 16 [2025-04-30 10:42:51,493 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:51,493 INFO L485 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2025-04-30 10:42:51,493 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:51,493 INFO L278 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2025-04-30 10:42:51,493 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-30 10:42:51,493 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:51,493 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:51,493 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-30 10:42:51,493 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:51,494 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 684480444, now seen corresponding path program 1 times [2025-04-30 10:42:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:51,494 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136559509] [2025-04-30 10:42:51,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:51,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:42:51,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:42:51,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:51,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:51,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136559509] [2025-04-30 10:42:51,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136559509] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:51,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:51,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-04-30 10:42:51,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031825124] [2025-04-30 10:42:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:51,800 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-30 10:42:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:51,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-30 10:42:51,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-04-30 10:42:51,800 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:52,224 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2025-04-30 10:42:52,224 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-30 10:42:52,224 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-30 10:42:52,224 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:52,225 INFO L225 Difference]: With dead ends: 171 [2025-04-30 10:42:52,225 INFO L226 Difference]: Without dead ends: 171 [2025-04-30 10:42:52,226 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-04-30 10:42:52,226 INFO L437 NwaCegarLoop]: 53 mSDtfsCounter, 199 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:52,226 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 363 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:42:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-04-30 10:42:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2025-04-30 10:42:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.528) internal successors, (191), 159 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 191 transitions. [2025-04-30 10:42:52,229 INFO L79 Accepts]: Start accepts. Automaton has 160 states and 191 transitions. Word has length 18 [2025-04-30 10:42:52,229 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:52,229 INFO L485 AbstractCegarLoop]: Abstraction has 160 states and 191 transitions. [2025-04-30 10:42:52,229 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,229 INFO L278 IsEmpty]: Start isEmpty. Operand 160 states and 191 transitions. [2025-04-30 10:42:52,229 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-30 10:42:52,229 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:52,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:52,230 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-30 10:42:52,230 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:52,230 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:52,231 INFO L85 PathProgramCache]: Analyzing trace with hash 684480445, now seen corresponding path program 1 times [2025-04-30 10:42:52,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:52,231 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945271067] [2025-04-30 10:42:52,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:52,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:52,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:42:52,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:42:52,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:52,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:52,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:52,630 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945271067] [2025-04-30 10:42:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945271067] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:52,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:52,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-30 10:42:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970174674] [2025-04-30 10:42:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:52,631 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-30 10:42:52,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:52,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-30 10:42:52,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-04-30 10:42:52,632 INFO L87 Difference]: Start difference. First operand 160 states and 191 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,069 INFO L93 Difference]: Finished difference Result 192 states and 220 transitions. [2025-04-30 10:42:53,069 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-30 10:42:53,069 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-30 10:42:53,069 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,070 INFO L225 Difference]: With dead ends: 192 [2025-04-30 10:42:53,070 INFO L226 Difference]: Without dead ends: 192 [2025-04-30 10:42:53,070 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-04-30 10:42:53,071 INFO L437 NwaCegarLoop]: 56 mSDtfsCounter, 288 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,071 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 347 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:42:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-04-30 10:42:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 175. [2025-04-30 10:42:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 140 states have (on average 1.4857142857142858) internal successors, (208), 174 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 208 transitions. [2025-04-30 10:42:53,085 INFO L79 Accepts]: Start accepts. Automaton has 175 states and 208 transitions. Word has length 18 [2025-04-30 10:42:53,085 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,085 INFO L485 AbstractCegarLoop]: Abstraction has 175 states and 208 transitions. [2025-04-30 10:42:53,086 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,086 INFO L278 IsEmpty]: Start isEmpty. Operand 175 states and 208 transitions. [2025-04-30 10:42:53,086 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-30 10:42:53,086 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:53,087 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-30 10:42:53,087 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:53,087 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1880049384, now seen corresponding path program 1 times [2025-04-30 10:42:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,087 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667301168] [2025-04-30 10:42:53,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:42:53,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:42:53,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:53,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,211 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667301168] [2025-04-30 10:42:53,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667301168] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:42:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415969123] [2025-04-30 10:42:53,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,211 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:42:53,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:42:53,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:53,212 INFO L87 Difference]: Start difference. First operand 175 states and 208 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,355 INFO L93 Difference]: Finished difference Result 208 states and 247 transitions. [2025-04-30 10:42:53,356 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:42:53,356 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-30 10:42:53,356 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,357 INFO L225 Difference]: With dead ends: 208 [2025-04-30 10:42:53,357 INFO L226 Difference]: Without dead ends: 208 [2025-04-30 10:42:53,357 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:53,357 INFO L437 NwaCegarLoop]: 104 mSDtfsCounter, 45 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,357 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 444 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-04-30 10:42:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2025-04-30 10:42:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 155 states have (on average 1.4709677419354839) internal successors, (228), 189 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 228 transitions. [2025-04-30 10:42:53,362 INFO L79 Accepts]: Start accepts. Automaton has 190 states and 228 transitions. Word has length 18 [2025-04-30 10:42:53,362 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,362 INFO L485 AbstractCegarLoop]: Abstraction has 190 states and 228 transitions. [2025-04-30 10:42:53,362 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,362 INFO L278 IsEmpty]: Start isEmpty. Operand 190 states and 228 transitions. [2025-04-30 10:42:53,363 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-30 10:42:53,363 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,363 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:53,363 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-30 10:42:53,363 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:53,363 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 940746083, now seen corresponding path program 1 times [2025-04-30 10:42:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,364 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711737488] [2025-04-30 10:42:53,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:42:53,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:42:53,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:53,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,443 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711737488] [2025-04-30 10:42:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711737488] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558358854] [2025-04-30 10:42:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,443 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:53,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:53,443 INFO L87 Difference]: Start difference. First operand 190 states and 228 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,555 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2025-04-30 10:42:53,555 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:53,555 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-30 10:42:53,555 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,556 INFO L225 Difference]: With dead ends: 189 [2025-04-30 10:42:53,556 INFO L226 Difference]: Without dead ends: 189 [2025-04-30 10:42:53,556 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:53,556 INFO L437 NwaCegarLoop]: 109 mSDtfsCounter, 3 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,556 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 277 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-04-30 10:42:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2025-04-30 10:42:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 155 states have (on average 1.4580645161290322) internal successors, (226), 188 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2025-04-30 10:42:53,566 INFO L79 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 19 [2025-04-30 10:42:53,566 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,566 INFO L485 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2025-04-30 10:42:53,566 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,566 INFO L278 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2025-04-30 10:42:53,566 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-30 10:42:53,566 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,567 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:53,567 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-30 10:42:53,567 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:53,567 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 940746084, now seen corresponding path program 1 times [2025-04-30 10:42:53,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,568 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368495070] [2025-04-30 10:42:53,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:42:53,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:42:53,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:53,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,702 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368495070] [2025-04-30 10:42:53,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368495070] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592596196] [2025-04-30 10:42:53,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,702 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:53,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:53,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:53,703 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,826 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2025-04-30 10:42:53,827 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:53,827 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-30 10:42:53,827 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,828 INFO L225 Difference]: With dead ends: 188 [2025-04-30 10:42:53,828 INFO L226 Difference]: Without dead ends: 188 [2025-04-30 10:42:53,828 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:53,828 INFO L437 NwaCegarLoop]: 108 mSDtfsCounter, 2 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,828 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 259 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-04-30 10:42:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2025-04-30 10:42:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 155 states have (on average 1.4451612903225806) internal successors, (224), 187 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 224 transitions. [2025-04-30 10:42:53,835 INFO L79 Accepts]: Start accepts. Automaton has 188 states and 224 transitions. Word has length 19 [2025-04-30 10:42:53,835 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,835 INFO L485 AbstractCegarLoop]: Abstraction has 188 states and 224 transitions. [2025-04-30 10:42:53,836 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,836 INFO L278 IsEmpty]: Start isEmpty. Operand 188 states and 224 transitions. [2025-04-30 10:42:53,836 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-30 10:42:53,837 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,837 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:53,837 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-30 10:42:53,837 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:53,838 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1105005910, now seen corresponding path program 1 times [2025-04-30 10:42:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,838 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826795614] [2025-04-30 10:42:53,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:42:53,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:42:53,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:54,001 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826795614] [2025-04-30 10:42:54,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826795614] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:54,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:54,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:54,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840191556] [2025-04-30 10:42:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:54,002 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:54,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:54,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:54,003 INFO L87 Difference]: Start difference. First operand 188 states and 224 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:54,216 INFO L93 Difference]: Finished difference Result 201 states and 238 transitions. [2025-04-30 10:42:54,216 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:54,216 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-30 10:42:54,216 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:54,217 INFO L225 Difference]: With dead ends: 201 [2025-04-30 10:42:54,217 INFO L226 Difference]: Without dead ends: 201 [2025-04-30 10:42:54,217 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:42:54,218 INFO L437 NwaCegarLoop]: 64 mSDtfsCounter, 122 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:54,218 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-04-30 10:42:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 187. [2025-04-30 10:42:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 155 states have (on average 1.4322580645161291) internal successors, (222), 186 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2025-04-30 10:42:54,221 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 22 [2025-04-30 10:42:54,221 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:54,221 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2025-04-30 10:42:54,221 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,221 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2025-04-30 10:42:54,221 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-30 10:42:54,221 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:54,222 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:54,222 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-30 10:42:54,222 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:54,222 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1105005911, now seen corresponding path program 1 times [2025-04-30 10:42:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:54,222 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586575791] [2025-04-30 10:42:54,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:54,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:42:54,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:42:54,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:54,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:54,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586575791] [2025-04-30 10:42:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586575791] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:54,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:54,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259554891] [2025-04-30 10:42:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:54,395 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:54,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:54,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:54,396 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:54,651 INFO L93 Difference]: Finished difference Result 200 states and 236 transitions. [2025-04-30 10:42:54,651 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:54,651 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-30 10:42:54,651 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:54,652 INFO L225 Difference]: With dead ends: 200 [2025-04-30 10:42:54,652 INFO L226 Difference]: Without dead ends: 200 [2025-04-30 10:42:54,652 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:42:54,653 INFO L437 NwaCegarLoop]: 64 mSDtfsCounter, 117 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:54,653 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 286 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-04-30 10:42:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 186. [2025-04-30 10:42:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 155 states have (on average 1.4193548387096775) internal successors, (220), 185 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2025-04-30 10:42:54,656 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 22 [2025-04-30 10:42:54,656 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:54,656 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2025-04-30 10:42:54,656 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,656 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2025-04-30 10:42:54,656 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-30 10:42:54,656 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:54,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:54,657 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-30 10:42:54,657 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:54,657 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 894643493, now seen corresponding path program 1 times [2025-04-30 10:42:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:54,657 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418097186] [2025-04-30 10:42:54,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:54,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:42:54,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:42:54,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:54,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:54,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:54,853 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418097186] [2025-04-30 10:42:54,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418097186] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:54,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:54,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:42:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900298336] [2025-04-30 10:42:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:54,853 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:42:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:54,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:42:54,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:42:54,855 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:55,144 INFO L93 Difference]: Finished difference Result 204 states and 238 transitions. [2025-04-30 10:42:55,144 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-30 10:42:55,144 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2025-04-30 10:42:55,144 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:55,145 INFO L225 Difference]: With dead ends: 204 [2025-04-30 10:42:55,145 INFO L226 Difference]: Without dead ends: 204 [2025-04-30 10:42:55,145 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-04-30 10:42:55,145 INFO L437 NwaCegarLoop]: 75 mSDtfsCounter, 174 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:55,146 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 502 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-04-30 10:42:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2025-04-30 10:42:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 157 states have (on average 1.414012738853503) internal successors, (222), 187 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 222 transitions. [2025-04-30 10:42:55,149 INFO L79 Accepts]: Start accepts. Automaton has 188 states and 222 transitions. Word has length 23 [2025-04-30 10:42:55,149 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:55,149 INFO L485 AbstractCegarLoop]: Abstraction has 188 states and 222 transitions. [2025-04-30 10:42:55,149 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,149 INFO L278 IsEmpty]: Start isEmpty. Operand 188 states and 222 transitions. [2025-04-30 10:42:55,149 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-30 10:42:55,149 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:55,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:55,150 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-30 10:42:55,150 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:55,150 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1808663744, now seen corresponding path program 1 times [2025-04-30 10:42:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:55,150 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676757625] [2025-04-30 10:42:55,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:55,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:55,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:42:55,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:42:55,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:55,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:55,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:55,197 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676757625] [2025-04-30 10:42:55,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676757625] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:55,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:55,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047388815] [2025-04-30 10:42:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:55,197 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:55,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:55,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:55,198 INFO L87 Difference]: Start difference. First operand 188 states and 222 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:55,297 INFO L93 Difference]: Finished difference Result 187 states and 220 transitions. [2025-04-30 10:42:55,298 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:55,298 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2025-04-30 10:42:55,298 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:55,299 INFO L225 Difference]: With dead ends: 187 [2025-04-30 10:42:55,299 INFO L226 Difference]: Without dead ends: 187 [2025-04-30 10:42:55,299 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:55,299 INFO L437 NwaCegarLoop]: 105 mSDtfsCounter, 3 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:55,299 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 267 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-04-30 10:42:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2025-04-30 10:42:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 157 states have (on average 1.4012738853503184) internal successors, (220), 186 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 220 transitions. [2025-04-30 10:42:55,302 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 220 transitions. Word has length 23 [2025-04-30 10:42:55,302 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:55,302 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 220 transitions. [2025-04-30 10:42:55,302 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,303 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 220 transitions. [2025-04-30 10:42:55,303 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-30 10:42:55,303 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:55,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:55,303 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-04-30 10:42:55,303 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:55,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1808663743, now seen corresponding path program 1 times [2025-04-30 10:42:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:55,304 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017486152] [2025-04-30 10:42:55,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:55,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:42:55,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:42:55,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:55,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:55,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:55,381 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017486152] [2025-04-30 10:42:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017486152] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252928156] [2025-04-30 10:42:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:55,382 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:55,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:55,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:55,383 INFO L87 Difference]: Start difference. First operand 187 states and 220 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:55,489 INFO L93 Difference]: Finished difference Result 186 states and 218 transitions. [2025-04-30 10:42:55,490 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:55,490 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2025-04-30 10:42:55,490 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:55,490 INFO L225 Difference]: With dead ends: 186 [2025-04-30 10:42:55,490 INFO L226 Difference]: Without dead ends: 186 [2025-04-30 10:42:55,490 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:55,491 INFO L437 NwaCegarLoop]: 104 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:55,491 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 249 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-04-30 10:42:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2025-04-30 10:42:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 185 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 218 transitions. [2025-04-30 10:42:55,494 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 218 transitions. Word has length 23 [2025-04-30 10:42:55,494 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:55,494 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 218 transitions. [2025-04-30 10:42:55,494 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:55,494 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 218 transitions. [2025-04-30 10:42:55,494 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:42:55,494 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:55,494 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:55,494 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-30 10:42:55,494 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:55,494 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2052456740, now seen corresponding path program 1 times [2025-04-30 10:42:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:55,495 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750262532] [2025-04-30 10:42:55,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:55,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:55,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:55,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:55,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:55,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:55,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750262532] [2025-04-30 10:42:55,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750262532] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:42:55,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248603631] [2025-04-30 10:42:55,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:55,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:42:55,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:42:55,734 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) [2025-04-30 10:42:55,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:42:55,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:55,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:55,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:55,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:55,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-30 10:42:55,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:42:56,003 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-30 10:42:56,075 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:42:56,076 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2025-04-30 10:42:56,199 INFO L325 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-04-30 10:42:56,199 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 16 treesize of output 29 [2025-04-30 10:42:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:56,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:42:56,527 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2025-04-30 10:42:56,531 INFO L354 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 68 treesize of output 64 [2025-04-30 10:42:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:56,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248603631] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:42:56,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:42:56,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 29 [2025-04-30 10:42:56,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373143923] [2025-04-30 10:42:56,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:42:56,696 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-30 10:42:56,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:56,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-30 10:42:56,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2025-04-30 10:42:56,697 INFO L87 Difference]: Start difference. First operand 186 states and 218 transitions. Second operand has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 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) [2025-04-30 10:42:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:57,438 INFO L93 Difference]: Finished difference Result 231 states and 266 transitions. [2025-04-30 10:42:57,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-30 10:42:57,440 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 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 26 [2025-04-30 10:42:57,440 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:57,441 INFO L225 Difference]: With dead ends: 231 [2025-04-30 10:42:57,441 INFO L226 Difference]: Without dead ends: 230 [2025-04-30 10:42:57,441 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2025-04-30 10:42:57,442 INFO L437 NwaCegarLoop]: 83 mSDtfsCounter, 90 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:57,442 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 897 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1004 Invalid, 3 Unknown, 0 Unchecked, 0.6s Time] [2025-04-30 10:42:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-04-30 10:42:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 205. [2025-04-30 10:42:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 176 states have (on average 1.3579545454545454) internal successors, (239), 204 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2025-04-30 10:42:57,446 INFO L79 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 26 [2025-04-30 10:42:57,446 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:57,446 INFO L485 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2025-04-30 10:42:57,446 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 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) [2025-04-30 10:42:57,446 INFO L278 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2025-04-30 10:42:57,446 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:42:57,447 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:57,447 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:57,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-30 10:42:57,651 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-04-30 10:42:57,651 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:57,651 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2052454820, now seen corresponding path program 1 times [2025-04-30 10:42:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:57,651 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823353469] [2025-04-30 10:42:57,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:57,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:57,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:57,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:57,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:57,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:57,747 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823353469] [2025-04-30 10:42:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823353469] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:42:57,747 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608138812] [2025-04-30 10:42:57,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:57,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:42:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:42:57,750 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) [2025-04-30 10:42:57,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-30 10:42:57,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:57,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:57,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:57,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:57,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-30 10:42:57,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:42:57,831 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-04-30 10:42:57,834 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-04-30 10:42:57,842 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-30 10:42:57,847 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-30 10:42:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:57,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:42:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608138812] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:42:57,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:42:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-04-30 10:42:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063860786] [2025-04-30 10:42:57,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:42:57,937 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:57,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:57,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:57,937 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:57,995 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2025-04-30 10:42:57,995 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:57,995 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-30 10:42:57,996 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:57,996 INFO L225 Difference]: With dead ends: 208 [2025-04-30 10:42:57,996 INFO L226 Difference]: Without dead ends: 204 [2025-04-30 10:42:57,996 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:57,997 INFO L437 NwaCegarLoop]: 103 mSDtfsCounter, 2 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:57,997 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 370 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-04-30 10:42:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2025-04-30 10:42:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 174 states have (on average 1.3563218390804597) internal successors, (236), 202 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions. [2025-04-30 10:42:58,000 INFO L79 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 26 [2025-04-30 10:42:58,000 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:58,000 INFO L485 AbstractCegarLoop]: Abstraction has 203 states and 236 transitions. [2025-04-30 10:42:58,000 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,000 INFO L278 IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions. [2025-04-30 10:42:58,000 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:42:58,000 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:58,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:58,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-30 10:42:58,205 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-04-30 10:42:58,205 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:58,206 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:58,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1536781765, now seen corresponding path program 1 times [2025-04-30 10:42:58,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:58,206 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922754857] [2025-04-30 10:42:58,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:58,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:58,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:58,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:58,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:58,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:58,320 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922754857] [2025-04-30 10:42:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922754857] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:58,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:58,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310064729] [2025-04-30 10:42:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:58,320 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:58,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:58,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:58,321 INFO L87 Difference]: Start difference. First operand 203 states and 236 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:58,571 INFO L93 Difference]: Finished difference Result 224 states and 259 transitions. [2025-04-30 10:42:58,571 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:58,572 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-30 10:42:58,572 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:58,572 INFO L225 Difference]: With dead ends: 224 [2025-04-30 10:42:58,572 INFO L226 Difference]: Without dead ends: 224 [2025-04-30 10:42:58,573 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:42:58,573 INFO L437 NwaCegarLoop]: 62 mSDtfsCounter, 107 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:58,573 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 276 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-04-30 10:42:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 202. [2025-04-30 10:42:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 174 states have (on average 1.3505747126436782) internal successors, (235), 201 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2025-04-30 10:42:58,576 INFO L79 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 26 [2025-04-30 10:42:58,576 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:58,576 INFO L485 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2025-04-30 10:42:58,577 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,577 INFO L278 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2025-04-30 10:42:58,577 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:42:58,577 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:58,577 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:58,577 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-04-30 10:42:58,577 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:58,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1536781764, now seen corresponding path program 1 times [2025-04-30 10:42:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:58,578 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777926253] [2025-04-30 10:42:58,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:58,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:58,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:58,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:58,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:58,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:58,729 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777926253] [2025-04-30 10:42:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777926253] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:58,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292587430] [2025-04-30 10:42:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:58,729 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:58,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:58,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:58,730 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:58,949 INFO L93 Difference]: Finished difference Result 223 states and 258 transitions. [2025-04-30 10:42:58,949 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:58,950 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-30 10:42:58,950 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:58,950 INFO L225 Difference]: With dead ends: 223 [2025-04-30 10:42:58,950 INFO L226 Difference]: Without dead ends: 223 [2025-04-30 10:42:58,950 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:42:58,951 INFO L437 NwaCegarLoop]: 62 mSDtfsCounter, 106 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:58,951 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 239 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-04-30 10:42:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 201. [2025-04-30 10:42:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 174 states have (on average 1.3448275862068966) internal successors, (234), 200 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 234 transitions. [2025-04-30 10:42:58,954 INFO L79 Accepts]: Start accepts. Automaton has 201 states and 234 transitions. Word has length 26 [2025-04-30 10:42:58,954 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:58,954 INFO L485 AbstractCegarLoop]: Abstraction has 201 states and 234 transitions. [2025-04-30 10:42:58,955 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:58,955 INFO L278 IsEmpty]: Start isEmpty. Operand 201 states and 234 transitions. [2025-04-30 10:42:58,955 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-04-30 10:42:58,955 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:58,955 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:58,955 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-04-30 10:42:58,955 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:58,955 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1969362262, now seen corresponding path program 1 times [2025-04-30 10:42:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:58,956 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518285258] [2025-04-30 10:42:58,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:58,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:58,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-30 10:42:58,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-30 10:42:58,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:58,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:58,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:58,989 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518285258] [2025-04-30 10:42:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518285258] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:58,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40586919] [2025-04-30 10:42:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:58,990 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:58,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:58,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:58,991 INFO L87 Difference]: Start difference. First operand 201 states and 234 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2025-04-30 10:42:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:59,026 INFO L93 Difference]: Finished difference Result 208 states and 236 transitions. [2025-04-30 10:42:59,026 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:59,026 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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 30 [2025-04-30 10:42:59,026 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:59,027 INFO L225 Difference]: With dead ends: 208 [2025-04-30 10:42:59,027 INFO L226 Difference]: Without dead ends: 208 [2025-04-30 10:42:59,027 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:59,028 INFO L437 NwaCegarLoop]: 97 mSDtfsCounter, 19 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:59,028 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 272 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-04-30 10:42:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 201. [2025-04-30 10:42:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 174 states have (on average 1.339080459770115) internal successors, (233), 200 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 233 transitions. [2025-04-30 10:42:59,031 INFO L79 Accepts]: Start accepts. Automaton has 201 states and 233 transitions. Word has length 30 [2025-04-30 10:42:59,031 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:59,031 INFO L485 AbstractCegarLoop]: Abstraction has 201 states and 233 transitions. [2025-04-30 10:42:59,031 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2025-04-30 10:42:59,031 INFO L278 IsEmpty]: Start isEmpty. Operand 201 states and 233 transitions. [2025-04-30 10:42:59,031 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-04-30 10:42:59,032 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:59,032 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:59,032 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-04-30 10:42:59,032 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:59,032 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1969364182, now seen corresponding path program 1 times [2025-04-30 10:42:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:59,032 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721085720] [2025-04-30 10:42:59,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:59,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-30 10:42:59,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-30 10:42:59,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:59,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:59,104 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721085720] [2025-04-30 10:42:59,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721085720] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:59,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:59,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:42:59,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634174381] [2025-04-30 10:42:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:59,105 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:42:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:59,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:42:59,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:59,106 INFO L87 Difference]: Start difference. First operand 201 states and 233 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 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) [2025-04-30 10:42:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:59,294 INFO L93 Difference]: Finished difference Result 228 states and 258 transitions. [2025-04-30 10:42:59,294 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-30 10:42:59,294 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 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 30 [2025-04-30 10:42:59,295 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:59,295 INFO L225 Difference]: With dead ends: 228 [2025-04-30 10:42:59,295 INFO L226 Difference]: Without dead ends: 228 [2025-04-30 10:42:59,296 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:59,296 INFO L437 NwaCegarLoop]: 66 mSDtfsCounter, 73 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:59,296 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 201 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-04-30 10:42:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 201. [2025-04-30 10:42:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 174 states have (on average 1.3333333333333333) internal successors, (232), 200 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 232 transitions. [2025-04-30 10:42:59,299 INFO L79 Accepts]: Start accepts. Automaton has 201 states and 232 transitions. Word has length 30 [2025-04-30 10:42:59,300 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:59,300 INFO L485 AbstractCegarLoop]: Abstraction has 201 states and 232 transitions. [2025-04-30 10:42:59,300 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 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) [2025-04-30 10:42:59,300 INFO L278 IsEmpty]: Start isEmpty. Operand 201 states and 232 transitions. [2025-04-30 10:42:59,301 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-30 10:42:59,301 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:59,301 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:59,301 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-04-30 10:42:59,301 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:59,301 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:59,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1521602347, now seen corresponding path program 1 times [2025-04-30 10:42:59,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:59,302 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783550420] [2025-04-30 10:42:59,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:59,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-30 10:42:59,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-30 10:42:59,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:59,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:42:59,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:59,338 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783550420] [2025-04-30 10:42:59,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783550420] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:59,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:59,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169514066] [2025-04-30 10:42:59,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:59,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:59,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:59,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:59,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:59,339 INFO L87 Difference]: Start difference. First operand 201 states and 232 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:59,405 INFO L93 Difference]: Finished difference Result 200 states and 230 transitions. [2025-04-30 10:42:59,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:42:59,405 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-30 10:42:59,406 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:59,406 INFO L225 Difference]: With dead ends: 200 [2025-04-30 10:42:59,406 INFO L226 Difference]: Without dead ends: 200 [2025-04-30 10:42:59,406 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:59,407 INFO L437 NwaCegarLoop]: 90 mSDtfsCounter, 13 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:59,407 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 194 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-04-30 10:42:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2025-04-30 10:42:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 174 states have (on average 1.3218390804597702) internal successors, (230), 199 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions. [2025-04-30 10:42:59,412 INFO L79 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 32 [2025-04-30 10:42:59,412 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:59,412 INFO L485 AbstractCegarLoop]: Abstraction has 200 states and 230 transitions. [2025-04-30 10:42:59,412 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,412 INFO L278 IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions. [2025-04-30 10:42:59,412 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-30 10:42:59,412 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:59,413 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:59,413 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-04-30 10:42:59,413 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:42:59,413 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 927747760, now seen corresponding path program 1 times [2025-04-30 10:42:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:59,413 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476728580] [2025-04-30 10:42:59,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:59,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-30 10:42:59,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-30 10:42:59,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:59,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:42:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:59,995 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476728580] [2025-04-30 10:42:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476728580] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:59,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-04-30 10:42:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128614977] [2025-04-30 10:42:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:59,996 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-30 10:42:59,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:59,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-30 10:42:59,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:42:59,997 INFO L87 Difference]: Start difference. First operand 200 states and 230 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:00,495 INFO L93 Difference]: Finished difference Result 221 states and 252 transitions. [2025-04-30 10:43:00,495 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-30 10:43:00,495 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-04-30 10:43:00,495 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:00,496 INFO L225 Difference]: With dead ends: 221 [2025-04-30 10:43:00,496 INFO L226 Difference]: Without dead ends: 210 [2025-04-30 10:43:00,496 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2025-04-30 10:43:00,497 INFO L437 NwaCegarLoop]: 81 mSDtfsCounter, 131 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:00,497 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 624 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-30 10:43:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-04-30 10:43:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2025-04-30 10:43:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 199 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2025-04-30 10:43:00,500 INFO L79 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 37 [2025-04-30 10:43:00,500 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:00,500 INFO L485 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2025-04-30 10:43:00,500 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:00,500 INFO L278 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2025-04-30 10:43:00,501 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-30 10:43:00,501 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:00,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:43:00,501 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-04-30 10:43:00,501 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:43:00,501 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1318154608, now seen corresponding path program 1 times [2025-04-30 10:43:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:00,501 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596982806] [2025-04-30 10:43:00,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:00,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-30 10:43:00,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-30 10:43:00,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:00,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:00,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:00,998 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596982806] [2025-04-30 10:43:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596982806] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:00,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:00,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-04-30 10:43:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719795263] [2025-04-30 10:43:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:00,998 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-30 10:43:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:00,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-30 10:43:00,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-04-30 10:43:00,998 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:01,373 INFO L93 Difference]: Finished difference Result 231 states and 263 transitions. [2025-04-30 10:43:01,373 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-30 10:43:01,373 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-04-30 10:43:01,373 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:01,374 INFO L225 Difference]: With dead ends: 231 [2025-04-30 10:43:01,374 INFO L226 Difference]: Without dead ends: 208 [2025-04-30 10:43:01,374 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-04-30 10:43:01,375 INFO L437 NwaCegarLoop]: 85 mSDtfsCounter, 196 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:01,375 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 601 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:43:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-04-30 10:43:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 185. [2025-04-30 10:43:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 159 states have (on average 1.3396226415094339) internal successors, (213), 184 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 213 transitions. [2025-04-30 10:43:01,377 INFO L79 Accepts]: Start accepts. Automaton has 185 states and 213 transitions. Word has length 37 [2025-04-30 10:43:01,377 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:01,377 INFO L485 AbstractCegarLoop]: Abstraction has 185 states and 213 transitions. [2025-04-30 10:43:01,377 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,377 INFO L278 IsEmpty]: Start isEmpty. Operand 185 states and 213 transitions. [2025-04-30 10:43:01,378 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-30 10:43:01,378 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:01,378 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:43:01,378 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-04-30 10:43:01,378 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:43:01,378 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash 836462965, now seen corresponding path program 1 times [2025-04-30 10:43:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:01,378 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055273499] [2025-04-30 10:43:01,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:01,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-30 10:43:01,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-30 10:43:01,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:01,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:01,543 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055273499] [2025-04-30 10:43:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055273499] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:43:01,543 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546027139] [2025-04-30 10:43:01,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:43:01,545 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) [2025-04-30 10:43:01,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-30 10:43:01,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-30 10:43:01,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-30 10:43:01,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:01,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-30 10:43:01,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:43:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:01,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:43:01,803 INFO L325 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2025-04-30 10:43:01,803 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2025-04-30 10:43:01,812 INFO L325 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2025-04-30 10:43:01,812 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2025-04-30 10:43:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546027139] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:43:01,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:43:01,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-04-30 10:43:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323457090] [2025-04-30 10:43:01,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:43:01,852 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-30 10:43:01,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:01,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-30 10:43:01,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-04-30 10:43:01,853 INFO L87 Difference]: Start difference. First operand 185 states and 213 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:02,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:02,193 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2025-04-30 10:43:02,194 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-30 10:43:02,194 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-04-30 10:43:02,194 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:02,195 INFO L225 Difference]: With dead ends: 226 [2025-04-30 10:43:02,195 INFO L226 Difference]: Without dead ends: 226 [2025-04-30 10:43:02,195 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-04-30 10:43:02,195 INFO L437 NwaCegarLoop]: 87 mSDtfsCounter, 91 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:02,195 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 667 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:43:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-04-30 10:43:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 210. [2025-04-30 10:43:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 184 states have (on average 1.315217391304348) internal successors, (242), 209 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 242 transitions. [2025-04-30 10:43:02,199 INFO L79 Accepts]: Start accepts. Automaton has 210 states and 242 transitions. Word has length 41 [2025-04-30 10:43:02,199 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:02,199 INFO L485 AbstractCegarLoop]: Abstraction has 210 states and 242 transitions. [2025-04-30 10:43:02,199 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:02,199 INFO L278 IsEmpty]: Start isEmpty. Operand 210 states and 242 transitions. [2025-04-30 10:43:02,199 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-30 10:43:02,199 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:02,200 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:43:02,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-30 10:43:02,404 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:02,404 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2025-04-30 10:43:02,404 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -810887051, now seen corresponding path program 1 times [2025-04-30 10:43:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:02,404 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725374150] [2025-04-30 10:43:02,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:02,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-30 10:43:02,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-30 10:43:02,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:02,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:02,733 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725374150] [2025-04-30 10:43:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725374150] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:43:02,733 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927862140] [2025-04-30 10:43:02,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:02,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:43:02,736 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) [2025-04-30 10:43:02,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-30 10:43:02,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-30 10:43:02,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-30 10:43:02,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:02,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:02,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-30 10:43:02,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:43:02,896 INFO L325 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-04-30 10:43:02,896 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-04-30 10:43:02,928 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-30 10:43:03,000 INFO L325 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-04-30 10:43:03,000 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-04-30 10:43:03,046 INFO L325 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-04-30 10:43:03,046 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-04-30 10:43:03,129 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-04-30 10:43:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:03,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:43:03,311 WARN L849 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_984 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_984))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_985)) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2025-04-30 10:43:03,317 WARN L849 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_984 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_984))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_985))) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2025-04-30 10:43:03,326 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:03,326 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-04-30 10:43:03,332 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:03,332 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 145 [2025-04-30 10:43:03,341 INFO L354 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 94 treesize of output 86 [2025-04-30 10:43:03,348 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:03,348 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74 [2025-04-30 10:43:05,883 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:05,883 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 269 treesize of output 1595 Killed by 15