./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr.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_parent_ptr.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 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:42:44,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:42:44,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:42:44,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:42:44,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:42:44,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:42:44,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:42:44,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:42:44,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:42:44,581 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:42:44,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:42:44,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:42:44,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:42:44,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:42:44,582 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:42:44,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:42:44,583 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:42:44,584 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:42:44,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:42:44,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:42:44,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:42:44,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:42:44,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:42:44,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:42:44,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:42:44,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:42:44,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:42:44,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:42:44,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:42:44,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:42:44,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:42:44,586 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 -> 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 [2025-04-30 10:42:44,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:42:44,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:42:44,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:42:44,812 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:42:44,813 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:42:44,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr.i [2025-04-30 10:42:46,134 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcded3e7/a215bc391d314fb09ab2cd378dde2eef/FLAGc80381b90 [2025-04-30 10:42:46,364 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:42:46,365 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memsafety-ext/tree_parent_ptr.i [2025-04-30 10:42:46,374 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcded3e7/a215bc391d314fb09ab2cd378dde2eef/FLAGc80381b90 [2025-04-30 10:42:47,336 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcded3e7/a215bc391d314fb09ab2cd378dde2eef [2025-04-30 10:42:47,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:42:47,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:42:47,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:42:47,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:42:47,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:42:47,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ee7c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47, skipping insertion in model container [2025-04-30 10:42:47,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:42:47,615 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:42:47,621 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:42:47,674 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:42:47,691 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:42:47,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47 WrapperNode [2025-04-30 10:42:47,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:42:47,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:42:47,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:42:47,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:42:47,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,722 INFO L138 Inliner]: procedures = 123, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 145 [2025-04-30 10:42:47,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:42:47,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:42:47,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:42:47,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:42:47,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,751 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 17 writes are split as follows [0, 17]. [2025-04-30 10:42:47,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:42:47,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:42:47,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:42:47,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:42:47,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (1/1) ... [2025-04-30 10:42:47,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:42:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:42:47,802 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 10:42:47,805 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 10:42:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:42:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:42:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-30 10:42:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-30 10:42:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-30 10:42:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-30 10:42:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-30 10:42:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:42:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:42:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:42:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:42:47,902 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:42:47,903 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:42:48,230 INFO L? ?]: Removed 176 outVars from TransFormulas that were not future-live. [2025-04-30 10:42:48,230 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:42:48,242 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:42:48,244 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-30 10:42:48,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:42:48 BoogieIcfgContainer [2025-04-30 10:42:48,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:42:48,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:42:48,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:42:48,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:42:48,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:42:47" (1/3) ... [2025-04-30 10:42:48,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5f3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:42:48, skipping insertion in model container [2025-04-30 10:42:48,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:42:47" (2/3) ... [2025-04-30 10:42:48,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5f3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:42:48, skipping insertion in model container [2025-04-30 10:42:48,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:42:48" (3/3) ... [2025-04-30 10:42:48,252 INFO L128 eAbstractionObserver]: Analyzing ICFG tree_parent_ptr.i [2025-04-30 10:42:48,263 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:42:48,264 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG tree_parent_ptr.i that has 1 procedures, 156 locations, 168 edges, 1 initial locations, 3 loop locations, and 77 error locations. [2025-04-30 10:42:48,299 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:42:48,308 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;@787bdf5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:42:48,308 INFO L341 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2025-04-30 10:42:48,311 INFO L278 IsEmpty]: Start isEmpty. Operand has 156 states, 78 states have (on average 2.1538461538461537) internal successors, (168), 155 states have internal predecessors, (168), 0 states have call successors, (0), 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 10:42:48,314 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-30 10:42:48,315 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:48,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-30 10:42:48,315 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:48,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2025-04-30 10:42:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:48,324 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298934524] [2025-04-30 10:42:48,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:48,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:48,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:42:48,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:42:48,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:48,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:48,473 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 10:42:48,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:48,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298934524] [2025-04-30 10:42:48,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298934524] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:48,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:48,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:48,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923508102] [2025-04-30 10:42:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:48,478 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:48,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:48,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:48,494 INFO L87 Difference]: Start difference. First operand has 156 states, 78 states have (on average 2.1538461538461537) internal successors, (168), 155 states have internal predecessors, (168), 0 states have call successors, (0), 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 10:42:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:48,631 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2025-04-30 10:42:48,631 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:48,633 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 10:42:48,634 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:48,639 INFO L225 Difference]: With dead ends: 153 [2025-04-30 10:42:48,639 INFO L226 Difference]: Without dead ends: 151 [2025-04-30 10:42:48,640 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 10:42:48,642 INFO L437 NwaCegarLoop]: 109 mSDtfsCounter, 99 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:48,642 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 136 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-04-30 10:42:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2025-04-30 10:42:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 77 states have (on average 2.090909090909091) internal successors, (161), 150 states have internal predecessors, (161), 0 states have call successors, (0), 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 10:42:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2025-04-30 10:42:48,674 INFO L79 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 3 [2025-04-30 10:42:48,675 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:48,675 INFO L485 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2025-04-30 10:42:48,675 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 10:42:48,675 INFO L278 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2025-04-30 10:42:48,675 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-30 10:42:48,675 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:48,675 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-30 10:42:48,676 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:42:48,676 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:48,677 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:48,677 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2025-04-30 10:42:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:48,677 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247917149] [2025-04-30 10:42:48,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:48,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:42:48,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:42:48,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:48,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:48,753 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 10:42:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:48,754 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247917149] [2025-04-30 10:42:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247917149] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:48,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:48,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:48,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772093639] [2025-04-30 10:42:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:48,755 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:48,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:48,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:48,756 INFO L87 Difference]: Start difference. First operand 151 states and 161 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 10:42:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:48,853 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2025-04-30 10:42:48,853 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:48,853 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 10:42:48,853 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:48,854 INFO L225 Difference]: With dead ends: 148 [2025-04-30 10:42:48,854 INFO L226 Difference]: Without dead ends: 148 [2025-04-30 10:42:48,854 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 10:42:48,854 INFO L437 NwaCegarLoop]: 111 mSDtfsCounter, 94 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:48,855 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 144 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:48,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-04-30 10:42:48,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2025-04-30 10:42:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 77 states have (on average 2.051948051948052) internal successors, (158), 147 states have internal predecessors, (158), 0 states have call successors, (0), 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 10:42:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2025-04-30 10:42:48,862 INFO L79 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 3 [2025-04-30 10:42:48,863 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:48,863 INFO L485 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2025-04-30 10:42:48,863 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 10:42:48,863 INFO L278 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2025-04-30 10:42:48,863 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-30 10:42:48,863 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:48,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:48,863 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:42:48,863 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:48,864 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1837202379, now seen corresponding path program 1 times [2025-04-30 10:42:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:48,864 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976027964] [2025-04-30 10:42:48,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:48,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:42:48,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:42:48,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:48,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:48,950 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 10:42:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:48,951 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976027964] [2025-04-30 10:42:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976027964] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:48,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:48,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:48,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718293424] [2025-04-30 10:42:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:48,951 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:48,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:48,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:48,952 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,120 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2025-04-30 10:42:49,120 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:49,121 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-30 10:42:49,121 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,122 INFO L225 Difference]: With dead ends: 153 [2025-04-30 10:42:49,123 INFO L226 Difference]: Without dead ends: 153 [2025-04-30 10:42:49,124 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 10:42:49,124 INFO L437 NwaCegarLoop]: 81 mSDtfsCounter, 177 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:49,124 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 123 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-04-30 10:42:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2025-04-30 10:42:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 78 states have (on average 1.8333333333333333) internal successors, (143), 131 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 10:42:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2025-04-30 10:42:49,135 INFO L79 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 9 [2025-04-30 10:42:49,135 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,135 INFO L485 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2025-04-30 10:42:49,135 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,135 INFO L278 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2025-04-30 10:42:49,135 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-30 10:42:49,135 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,135 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:49,135 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:42:49,136 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:49,136 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1837202380, now seen corresponding path program 1 times [2025-04-30 10:42:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,136 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085704506] [2025-04-30 10:42:49,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:42:49,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:42:49,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,266 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 10:42:49,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,267 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085704506] [2025-04-30 10:42:49,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085704506] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519984379] [2025-04-30 10:42:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,268 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:49,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:49,269 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,447 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2025-04-30 10:42:49,448 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:42:49,448 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-30 10:42:49,448 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,448 INFO L225 Difference]: With dead ends: 186 [2025-04-30 10:42:49,449 INFO L226 Difference]: Without dead ends: 186 [2025-04-30 10:42:49,449 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 10:42:49,449 INFO L437 NwaCegarLoop]: 97 mSDtfsCounter, 188 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:49,449 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 182 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-04-30 10:42:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 169. [2025-04-30 10:42:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 115 states have (on average 1.7043478260869565) internal successors, (196), 168 states have internal predecessors, (196), 0 states have call successors, (0), 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 10:42:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2025-04-30 10:42:49,455 INFO L79 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 9 [2025-04-30 10:42:49,455 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,455 INFO L485 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2025-04-30 10:42:49,455 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,456 INFO L278 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2025-04-30 10:42:49,456 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-30 10:42:49,456 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:49,457 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:42:49,457 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:49,457 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1837208362, now seen corresponding path program 1 times [2025-04-30 10:42:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,457 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548403172] [2025-04-30 10:42:49,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:42:49,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:42:49,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,506 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 10:42:49,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,507 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548403172] [2025-04-30 10:42:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548403172] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119302612] [2025-04-30 10:42:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,507 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:49,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:49,508 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,568 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2025-04-30 10:42:49,568 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:49,568 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-30 10:42:49,568 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,570 INFO L225 Difference]: With dead ends: 169 [2025-04-30 10:42:49,570 INFO L226 Difference]: Without dead ends: 169 [2025-04-30 10:42:49,570 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 10:42:49,571 INFO L437 NwaCegarLoop]: 131 mSDtfsCounter, 3 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:49,571 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 202 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-04-30 10:42:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-04-30 10:42:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.6923076923076923) internal successors, (198), 168 states have internal predecessors, (198), 0 states have call successors, (0), 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 10:42:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2025-04-30 10:42:49,578 INFO L79 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 9 [2025-04-30 10:42:49,578 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,578 INFO L485 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2025-04-30 10:42:49,579 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,579 INFO L278 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2025-04-30 10:42:49,579 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-30 10:42:49,579 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,579 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:49,579 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:42:49,579 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:49,579 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1837208363, now seen corresponding path program 1 times [2025-04-30 10:42:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,579 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821140011] [2025-04-30 10:42:49,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:42:49,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:42:49,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,659 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 10:42:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,659 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821140011] [2025-04-30 10:42:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821140011] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:42:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006599814] [2025-04-30 10:42:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,660 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:49,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:49,661 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,748 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2025-04-30 10:42:49,748 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:49,748 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-30 10:42:49,748 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,749 INFO L225 Difference]: With dead ends: 167 [2025-04-30 10:42:49,749 INFO L226 Difference]: Without dead ends: 167 [2025-04-30 10:42:49,749 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 10:42:49,750 INFO L437 NwaCegarLoop]: 132 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:49,751 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 191 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-04-30 10:42:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-04-30 10:42:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 117 states have (on average 1.6666666666666667) internal successors, (195), 166 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 195 transitions. [2025-04-30 10:42:49,760 INFO L79 Accepts]: Start accepts. Automaton has 167 states and 195 transitions. Word has length 9 [2025-04-30 10:42:49,761 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,761 INFO L485 AbstractCegarLoop]: Abstraction has 167 states and 195 transitions. [2025-04-30 10:42:49,761 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:49,761 INFO L278 IsEmpty]: Start isEmpty. Operand 167 states and 195 transitions. [2025-04-30 10:42:49,761 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-30 10:42:49,761 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:49,761 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-30 10:42:49,761 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:49,762 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1506183666, now seen corresponding path program 1 times [2025-04-30 10:42:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,762 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856541888] [2025-04-30 10:42:49,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-30 10:42:49,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-30 10:42:49,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,788 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 10:42:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,789 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856541888] [2025-04-30 10:42:49,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856541888] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697934831] [2025-04-30 10:42:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,789 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:49,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:49,790 INFO L87 Difference]: Start difference. First operand 167 states and 195 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 10:42:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:49,804 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2025-04-30 10:42:49,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:49,805 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-04-30 10:42:49,805 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:49,805 INFO L225 Difference]: With dead ends: 167 [2025-04-30 10:42:49,805 INFO L226 Difference]: Without dead ends: 167 [2025-04-30 10:42:49,806 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 10:42:49,806 INFO L437 NwaCegarLoop]: 133 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 256 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 10:42:49,806 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 256 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-04-30 10:42:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-04-30 10:42:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 117 states have (on average 1.6581196581196582) internal successors, (194), 166 states have internal predecessors, (194), 0 states have call successors, (0), 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 10:42:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 194 transitions. [2025-04-30 10:42:49,811 INFO L79 Accepts]: Start accepts. Automaton has 167 states and 194 transitions. Word has length 12 [2025-04-30 10:42:49,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:49,811 INFO L485 AbstractCegarLoop]: Abstraction has 167 states and 194 transitions. [2025-04-30 10:42:49,811 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 10:42:49,811 INFO L278 IsEmpty]: Start isEmpty. Operand 167 states and 194 transitions. [2025-04-30 10:42:49,811 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-30 10:42:49,811 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:49,812 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:49,812 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-30 10:42:49,812 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:49,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash 36683411, now seen corresponding path program 1 times [2025-04-30 10:42:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:49,812 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589367318] [2025-04-30 10:42:49,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:49,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-30 10:42:49,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-30 10:42:49,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:49,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:49,890 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 10:42:49,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:49,890 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589367318] [2025-04-30 10:42:49,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589367318] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:49,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:49,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:49,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54234672] [2025-04-30 10:42:49,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:49,890 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:49,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:49,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:49,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:49,891 INFO L87 Difference]: Start difference. First operand 167 states and 194 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 10:42:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,002 INFO L93 Difference]: Finished difference Result 174 states and 203 transitions. [2025-04-30 10:42:50,003 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:50,003 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-30 10:42:50,003 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,004 INFO L225 Difference]: With dead ends: 174 [2025-04-30 10:42:50,004 INFO L226 Difference]: Without dead ends: 174 [2025-04-30 10:42:50,004 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 10:42:50,004 INFO L437 NwaCegarLoop]: 117 mSDtfsCounter, 21 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,004 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 249 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-04-30 10:42:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2025-04-30 10:42:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 119 states have (on average 1.6134453781512605) internal successors, (192), 163 states have internal predecessors, (192), 0 states have call successors, (0), 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 10:42:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 192 transitions. [2025-04-30 10:42:50,009 INFO L79 Accepts]: Start accepts. Automaton has 164 states and 192 transitions. Word has length 14 [2025-04-30 10:42:50,009 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,009 INFO L485 AbstractCegarLoop]: Abstraction has 164 states and 192 transitions. [2025-04-30 10:42:50,009 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 10:42:50,009 INFO L278 IsEmpty]: Start isEmpty. Operand 164 states and 192 transitions. [2025-04-30 10:42:50,009 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-30 10:42:50,009 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,009 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,009 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-30 10:42:50,011 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:50,011 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash 36683412, now seen corresponding path program 1 times [2025-04-30 10:42:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,012 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341635129] [2025-04-30 10:42:50,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-30 10:42:50,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-30 10:42:50,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,140 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 10:42:50,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341635129] [2025-04-30 10:42:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341635129] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:42:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266874724] [2025-04-30 10:42:50,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:42:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:42:50,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:50,141 INFO L87 Difference]: Start difference. First operand 164 states and 192 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 10:42:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,339 INFO L93 Difference]: Finished difference Result 176 states and 206 transitions. [2025-04-30 10:42:50,339 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-30 10:42:50,339 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-30 10:42:50,339 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,340 INFO L225 Difference]: With dead ends: 176 [2025-04-30 10:42:50,340 INFO L226 Difference]: Without dead ends: 176 [2025-04-30 10:42:50,340 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:42:50,342 INFO L437 NwaCegarLoop]: 118 mSDtfsCounter, 21 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,342 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 389 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-04-30 10:42:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2025-04-30 10:42:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 130 states have (on average 1.5769230769230769) internal successors, (205), 170 states have internal predecessors, (205), 0 states have call successors, (0), 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 10:42:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 205 transitions. [2025-04-30 10:42:50,349 INFO L79 Accepts]: Start accepts. Automaton has 171 states and 205 transitions. Word has length 14 [2025-04-30 10:42:50,349 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,349 INFO L485 AbstractCegarLoop]: Abstraction has 171 states and 205 transitions. [2025-04-30 10:42:50,349 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 L278 IsEmpty]: Start isEmpty. Operand 171 states and 205 transitions. [2025-04-30 10:42:50,349 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-30 10:42:50,350 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,350 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-30 10:42:50,350 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:50,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash 617594462, now seen corresponding path program 1 times [2025-04-30 10:42:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,353 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166261766] [2025-04-30 10:42:50,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-30 10:42:50,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-30 10:42:50,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,378 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 10:42:50,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,378 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166261766] [2025-04-30 10:42:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166261766] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:50,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827407514] [2025-04-30 10:42:50,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,379 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:50,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:50,380 INFO L87 Difference]: Start difference. First operand 171 states and 205 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 10:42:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,387 INFO L93 Difference]: Finished difference Result 173 states and 207 transitions. [2025-04-30 10:42:50,387 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:50,387 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2025-04-30 10:42:50,387 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,388 INFO L225 Difference]: With dead ends: 173 [2025-04-30 10:42:50,388 INFO L226 Difference]: Without dead ends: 173 [2025-04-30 10:42:50,388 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 10:42:50,389 INFO L437 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 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 10:42:50,389 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-04-30 10:42:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-04-30 10:42:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 132 states have (on average 1.5681818181818181) internal successors, (207), 172 states have internal predecessors, (207), 0 states have call successors, (0), 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 10:42:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 207 transitions. [2025-04-30 10:42:50,392 INFO L79 Accepts]: Start accepts. Automaton has 173 states and 207 transitions. Word has length 17 [2025-04-30 10:42:50,392 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,392 INFO L485 AbstractCegarLoop]: Abstraction has 173 states and 207 transitions. [2025-04-30 10:42:50,392 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 10:42:50,393 INFO L278 IsEmpty]: Start isEmpty. Operand 173 states and 207 transitions. [2025-04-30 10:42:50,393 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-30 10:42:50,393 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:42:50,393 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-30 10:42:50,393 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:50,394 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1913940022, now seen corresponding path program 1 times [2025-04-30 10:42:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553019561] [2025-04-30 10:42:50,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-30 10:42:50,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-30 10:42:50,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,460 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 10:42:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,461 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553019561] [2025-04-30 10:42:50,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553019561] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:50,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815022007] [2025-04-30 10:42:50,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,462 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:50,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:50,462 INFO L87 Difference]: Start difference. First operand 173 states and 207 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 10:42:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,522 INFO L93 Difference]: Finished difference Result 179 states and 209 transitions. [2025-04-30 10:42:50,522 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:42:50,522 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2025-04-30 10:42:50,523 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,524 INFO L225 Difference]: With dead ends: 179 [2025-04-30 10:42:50,524 INFO L226 Difference]: Without dead ends: 179 [2025-04-30 10:42:50,524 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 10:42:50,524 INFO L437 NwaCegarLoop]: 121 mSDtfsCounter, 19 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,524 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 334 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-04-30 10:42:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2025-04-30 10:42:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 133 states have (on average 1.5639097744360901) internal successors, (208), 173 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 10:42:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2025-04-30 10:42:50,534 INFO L79 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 17 [2025-04-30 10:42:50,534 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,534 INFO L485 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2025-04-30 10:42:50,534 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 10:42:50,534 INFO L278 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2025-04-30 10:42:50,534 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-30 10:42:50,534 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,534 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 10:42:50,535 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-30 10:42:50,535 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:50,535 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash -232103557, now seen corresponding path program 1 times [2025-04-30 10:42:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,535 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489510052] [2025-04-30 10:42:50,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:42:50,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:42:50,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:50,727 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 10:42:50,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:50,727 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489510052] [2025-04-30 10:42:50,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489510052] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:50,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:50,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:42:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472663816] [2025-04-30 10:42:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:50,728 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:42:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:50,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:42:50,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:42:50,729 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 10:42:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:50,889 INFO L93 Difference]: Finished difference Result 215 states and 255 transitions. [2025-04-30 10:42:50,890 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:42:50,890 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 10:42:50,890 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:50,891 INFO L225 Difference]: With dead ends: 215 [2025-04-30 10:42:50,891 INFO L226 Difference]: Without dead ends: 215 [2025-04-30 10:42:50,891 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 10:42:50,891 INFO L437 NwaCegarLoop]: 113 mSDtfsCounter, 52 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:50,891 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 485 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-04-30 10:42:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 189. [2025-04-30 10:42:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.5405405405405406) internal successors, (228), 188 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 10:42:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2025-04-30 10:42:50,897 INFO L79 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 19 [2025-04-30 10:42:50,898 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:50,898 INFO L485 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2025-04-30 10:42:50,898 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 10:42:50,898 INFO L278 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2025-04-30 10:42:50,898 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-30 10:42:50,898 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:50,898 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 10:42:50,898 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-30 10:42:50,899 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:50,899 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1050364954, now seen corresponding path program 1 times [2025-04-30 10:42:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:50,899 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928663730] [2025-04-30 10:42:50,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:50,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:42:50,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:42:50,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:50,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:51,305 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 10:42:51,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:51,305 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928663730] [2025-04-30 10:42:51,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928663730] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:51,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:51,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-30 10:42:51,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388033400] [2025-04-30 10:42:51,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:51,306 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-30 10:42:51,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:51,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-30 10:42:51,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-04-30 10:42:51,306 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 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 10:42:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:51,740 INFO L93 Difference]: Finished difference Result 218 states and 252 transitions. [2025-04-30 10:42:51,740 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-30 10:42:51,740 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 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 10:42:51,741 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:51,741 INFO L225 Difference]: With dead ends: 218 [2025-04-30 10:42:51,741 INFO L226 Difference]: Without dead ends: 218 [2025-04-30 10:42:51,742 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-04-30 10:42:51,742 INFO L437 NwaCegarLoop]: 64 mSDtfsCounter, 196 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:51,743 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 376 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-30 10:42:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-04-30 10:42:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 198. [2025-04-30 10:42:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.5286624203821657) internal successors, (240), 197 states have internal predecessors, (240), 0 states have call successors, (0), 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 10:42:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 240 transitions. [2025-04-30 10:42:51,747 INFO L79 Accepts]: Start accepts. Automaton has 198 states and 240 transitions. Word has length 19 [2025-04-30 10:42:51,747 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:51,747 INFO L485 AbstractCegarLoop]: Abstraction has 198 states and 240 transitions. [2025-04-30 10:42:51,747 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 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 10:42:51,747 INFO L278 IsEmpty]: Start isEmpty. Operand 198 states and 240 transitions. [2025-04-30 10:42:51,747 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-30 10:42:51,747 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:51,747 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 10:42:51,747 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-30 10:42:51,747 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:51,748 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1050364953, now seen corresponding path program 1 times [2025-04-30 10:42:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:51,748 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782808598] [2025-04-30 10:42:51,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:51,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:51,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:42:51,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:42:51,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:51,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:52,031 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 10:42:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:52,031 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782808598] [2025-04-30 10:42:52,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782808598] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:52,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:52,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-04-30 10:42:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891886061] [2025-04-30 10:42:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:52,032 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-30 10:42:52,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:52,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-30 10:42:52,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-04-30 10:42:52,032 INFO L87 Difference]: Start difference. First operand 198 states and 240 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 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 10:42:52,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:52,397 INFO L93 Difference]: Finished difference Result 212 states and 255 transitions. [2025-04-30 10:42:52,398 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-30 10:42:52,398 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 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 10:42:52,398 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:52,399 INFO L225 Difference]: With dead ends: 212 [2025-04-30 10:42:52,399 INFO L226 Difference]: Without dead ends: 212 [2025-04-30 10:42:52,399 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 10:42:52,399 INFO L437 NwaCegarLoop]: 58 mSDtfsCounter, 242 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:52,399 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 349 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:42:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-04-30 10:42:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 198. [2025-04-30 10:42:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 197 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 10:42:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 239 transitions. [2025-04-30 10:42:52,403 INFO L79 Accepts]: Start accepts. Automaton has 198 states and 239 transitions. Word has length 19 [2025-04-30 10:42:52,403 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:52,403 INFO L485 AbstractCegarLoop]: Abstraction has 198 states and 239 transitions. [2025-04-30 10:42:52,403 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 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 10:42:52,403 INFO L278 IsEmpty]: Start isEmpty. Operand 198 states and 239 transitions. [2025-04-30 10:42:52,403 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-30 10:42:52,403 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:52,403 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] [2025-04-30 10:42:52,403 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-30 10:42:52,404 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:52,404 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 493184809, now seen corresponding path program 1 times [2025-04-30 10:42:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:52,404 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372991496] [2025-04-30 10:42:52,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:52,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-30 10:42:52,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-30 10:42:52,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:52,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:52,484 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 10:42:52,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:52,485 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372991496] [2025-04-30 10:42:52,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372991496] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:52,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:52,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447749628] [2025-04-30 10:42:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:52,485 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:52,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:52,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:52,486 INFO L87 Difference]: Start difference. First operand 198 states and 239 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:52,600 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2025-04-30 10:42:52,600 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:52,600 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-30 10:42:52,600 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:52,601 INFO L225 Difference]: With dead ends: 197 [2025-04-30 10:42:52,601 INFO L226 Difference]: Without dead ends: 197 [2025-04-30 10:42:52,601 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 10:42:52,602 INFO L437 NwaCegarLoop]: 122 mSDtfsCounter, 3 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:52,602 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 306 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-04-30 10:42:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2025-04-30 10:42:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 157 states have (on average 1.5095541401273886) internal successors, (237), 196 states have internal predecessors, (237), 0 states have call successors, (0), 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 10:42:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 237 transitions. [2025-04-30 10:42:52,605 INFO L79 Accepts]: Start accepts. Automaton has 197 states and 237 transitions. Word has length 20 [2025-04-30 10:42:52,605 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:52,605 INFO L485 AbstractCegarLoop]: Abstraction has 197 states and 237 transitions. [2025-04-30 10:42:52,605 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,605 INFO L278 IsEmpty]: Start isEmpty. Operand 197 states and 237 transitions. [2025-04-30 10:42:52,606 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-30 10:42:52,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:52,606 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] [2025-04-30 10:42:52,606 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-30 10:42:52,606 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:52,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash 493184810, now seen corresponding path program 1 times [2025-04-30 10:42:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:52,607 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826253218] [2025-04-30 10:42:52,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:52,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-30 10:42:52,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-30 10:42:52,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:52,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:52,702 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 10:42:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:52,703 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826253218] [2025-04-30 10:42:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826253218] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:52,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025914345] [2025-04-30 10:42:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:52,703 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:52,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:52,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:52,704 INFO L87 Difference]: Start difference. First operand 197 states and 237 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:52,828 INFO L93 Difference]: Finished difference Result 196 states and 235 transitions. [2025-04-30 10:42:52,828 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:52,828 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-30 10:42:52,828 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:52,829 INFO L225 Difference]: With dead ends: 196 [2025-04-30 10:42:52,829 INFO L226 Difference]: Without dead ends: 196 [2025-04-30 10:42:52,829 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 10:42:52,829 INFO L437 NwaCegarLoop]: 121 mSDtfsCounter, 2 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:52,829 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 284 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-04-30 10:42:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-04-30 10:42:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 157 states have (on average 1.4968152866242037) internal successors, (235), 195 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 10:42:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 235 transitions. [2025-04-30 10:42:52,833 INFO L79 Accepts]: Start accepts. Automaton has 196 states and 235 transitions. Word has length 20 [2025-04-30 10:42:52,833 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:52,833 INFO L485 AbstractCegarLoop]: Abstraction has 196 states and 235 transitions. [2025-04-30 10:42:52,835 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,835 INFO L278 IsEmpty]: Start isEmpty. Operand 196 states and 235 transitions. [2025-04-30 10:42:52,836 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-30 10:42:52,836 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:52,836 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 10:42:52,836 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-30 10:42:52,836 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:52,836 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1709255840, now seen corresponding path program 1 times [2025-04-30 10:42:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:52,837 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996232039] [2025-04-30 10:42:52,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:52,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:52,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:42:52,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:42:52,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:52,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:52,902 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 10:42:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:52,902 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996232039] [2025-04-30 10:42:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996232039] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:52,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:52,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281849267] [2025-04-30 10:42:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:52,902 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:42:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:52,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:42:52,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:52,903 INFO L87 Difference]: Start difference. First operand 196 states and 235 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:52,992 INFO L93 Difference]: Finished difference Result 203 states and 244 transitions. [2025-04-30 10:42:52,992 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:52,992 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-30 10:42:52,993 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:52,993 INFO L225 Difference]: With dead ends: 203 [2025-04-30 10:42:52,993 INFO L226 Difference]: Without dead ends: 203 [2025-04-30 10:42:52,993 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:42:52,994 INFO L437 NwaCegarLoop]: 75 mSDtfsCounter, 139 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:52,994 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 90 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-04-30 10:42:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 188. [2025-04-30 10:42:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 156 states have (on average 1.455128205128205) internal successors, (227), 187 states have internal predecessors, (227), 0 states have call successors, (0), 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 10:42:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 227 transitions. [2025-04-30 10:42:52,997 INFO L79 Accepts]: Start accepts. Automaton has 188 states and 227 transitions. Word has length 22 [2025-04-30 10:42:52,997 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:52,997 INFO L485 AbstractCegarLoop]: Abstraction has 188 states and 227 transitions. [2025-04-30 10:42:52,997 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:52,997 INFO L278 IsEmpty]: Start isEmpty. Operand 188 states and 227 transitions. [2025-04-30 10:42:52,998 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-30 10:42:52,998 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:52,998 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 10:42:52,998 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-30 10:42:52,998 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:52,998 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash -614418061, now seen corresponding path program 1 times [2025-04-30 10:42:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:52,999 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790794518] [2025-04-30 10:42:52,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:42:53,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:42:53,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,120 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 10:42:53,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,120 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790794518] [2025-04-30 10:42:53,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790794518] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:53,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323365408] [2025-04-30 10:42:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,121 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:53,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:53,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:53,121 INFO L87 Difference]: Start difference. First operand 188 states and 227 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:42:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,388 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2025-04-30 10:42:53,388 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:53,388 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:42:53,388 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,389 INFO L225 Difference]: With dead ends: 201 [2025-04-30 10:42:53,389 INFO L226 Difference]: Without dead ends: 201 [2025-04-30 10:42:53,389 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 10:42:53,389 INFO L437 NwaCegarLoop]: 68 mSDtfsCounter, 139 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,389 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 354 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-04-30 10:42:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 187. [2025-04-30 10:42:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 156 states have (on average 1.4423076923076923) internal successors, (225), 186 states have internal predecessors, (225), 0 states have call successors, (0), 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 10:42:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2025-04-30 10:42:53,393 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 23 [2025-04-30 10:42:53,393 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,393 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2025-04-30 10:42:53,393 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:42:53,393 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2025-04-30 10:42:53,393 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-30 10:42:53,393 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,394 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 10:42:53,394 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-30 10:42:53,394 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:53,394 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash -614418060, now seen corresponding path program 1 times [2025-04-30 10:42:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368774173] [2025-04-30 10:42:53,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:42:53,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:42:53,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,564 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 10:42:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,565 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368774173] [2025-04-30 10:42:53,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368774173] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:53,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80474399] [2025-04-30 10:42:53,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,565 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:53,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:53,566 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:42:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,823 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2025-04-30 10:42:53,824 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:53,824 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:42:53,824 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,824 INFO L225 Difference]: With dead ends: 200 [2025-04-30 10:42:53,825 INFO L226 Difference]: Without dead ends: 200 [2025-04-30 10:42:53,825 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 10:42:53,825 INFO L437 NwaCegarLoop]: 68 mSDtfsCounter, 137 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,825 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 297 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-04-30 10:42:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 186. [2025-04-30 10:42:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 185 states have internal predecessors, (223), 0 states have call successors, (0), 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 10:42:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 223 transitions. [2025-04-30 10:42:53,828 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 223 transitions. Word has length 23 [2025-04-30 10:42:53,828 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,829 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 223 transitions. [2025-04-30 10:42:53,829 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:42:53,829 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 223 transitions. [2025-04-30 10:42:53,829 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-30 10:42:53,829 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,829 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] [2025-04-30 10:42:53,829 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-30 10:42:53,829 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:53,829 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1841807221, now seen corresponding path program 1 times [2025-04-30 10:42:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,830 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702696545] [2025-04-30 10:42:53,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:42:53,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:42:53,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,850 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 10:42:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,850 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702696545] [2025-04-30 10:42:53,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702696545] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:42:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212685270] [2025-04-30 10:42:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,851 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:42:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:42:53,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:42:53,851 INFO L87 Difference]: Start difference. First operand 186 states and 223 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:53,859 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2025-04-30 10:42:53,860 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:42:53,860 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-30 10:42:53,860 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:53,860 INFO L225 Difference]: With dead ends: 189 [2025-04-30 10:42:53,860 INFO L226 Difference]: Without dead ends: 189 [2025-04-30 10:42:53,861 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 10:42:53,861 INFO L437 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:53,861 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:42:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-04-30 10:42:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2025-04-30 10:42:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 158 states have (on average 1.4240506329113924) internal successors, (225), 187 states have internal predecessors, (225), 0 states have call successors, (0), 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 10:42:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 225 transitions. [2025-04-30 10:42:53,868 INFO L79 Accepts]: Start accepts. Automaton has 188 states and 225 transitions. Word has length 24 [2025-04-30 10:42:53,868 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:53,868 INFO L485 AbstractCegarLoop]: Abstraction has 188 states and 225 transitions. [2025-04-30 10:42:53,868 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:53,868 INFO L278 IsEmpty]: Start isEmpty. Operand 188 states and 225 transitions. [2025-04-30 10:42:53,868 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-30 10:42:53,868 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:53,868 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] [2025-04-30 10:42:53,869 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-04-30 10:42:53,869 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:53,869 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1899065523, now seen corresponding path program 1 times [2025-04-30 10:42:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:53,869 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976315800] [2025-04-30 10:42:53,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:53,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:53,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:42:53,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:42:53,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:53,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:53,930 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 10:42:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:53,931 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976315800] [2025-04-30 10:42:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976315800] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942811471] [2025-04-30 10:42:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:53,931 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:53,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:53,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:53,932 INFO L87 Difference]: Start difference. First operand 188 states and 225 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:54,039 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2025-04-30 10:42:54,040 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:54,040 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-30 10:42:54,040 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:54,040 INFO L225 Difference]: With dead ends: 187 [2025-04-30 10:42:54,040 INFO L226 Difference]: Without dead ends: 187 [2025-04-30 10:42:54,040 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 10:42:54,041 INFO L437 NwaCegarLoop]: 111 mSDtfsCounter, 3 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:54,041 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 275 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-04-30 10:42:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2025-04-30 10:42:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 158 states have (on average 1.4113924050632911) internal successors, (223), 186 states have internal predecessors, (223), 0 states have call successors, (0), 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 10:42:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2025-04-30 10:42:54,043 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 24 [2025-04-30 10:42:54,043 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:54,043 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2025-04-30 10:42:54,044 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,044 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2025-04-30 10:42:54,044 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-30 10:42:54,044 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:54,044 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] [2025-04-30 10:42:54,044 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-30 10:42:54,044 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:54,044 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1899065522, now seen corresponding path program 1 times [2025-04-30 10:42:54,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:54,044 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000621018] [2025-04-30 10:42:54,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:54,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:42:54,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:42:54,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:54,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:54,129 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 10:42:54,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:54,130 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000621018] [2025-04-30 10:42:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000621018] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:54,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:54,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283860008] [2025-04-30 10:42:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:54,130 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:54,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:54,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:54,131 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:54,260 INFO L93 Difference]: Finished difference Result 186 states and 221 transitions. [2025-04-30 10:42:54,260 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:42:54,260 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-30 10:42:54,260 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:54,262 INFO L225 Difference]: With dead ends: 186 [2025-04-30 10:42:54,262 INFO L226 Difference]: Without dead ends: 186 [2025-04-30 10:42:54,262 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 10:42:54,263 INFO L437 NwaCegarLoop]: 110 mSDtfsCounter, 2 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 267 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 10:42:54,264 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 267 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-04-30 10:42:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2025-04-30 10:42:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 158 states have (on average 1.3987341772151898) internal successors, (221), 185 states have internal predecessors, (221), 0 states have call successors, (0), 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 10:42:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 221 transitions. [2025-04-30 10:42:54,286 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 221 transitions. Word has length 24 [2025-04-30 10:42:54,286 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:54,287 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 221 transitions. [2025-04-30 10:42:54,287 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,287 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 221 transitions. [2025-04-30 10:42:54,287 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-30 10:42:54,287 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:54,287 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] [2025-04-30 10:42:54,287 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-04-30 10:42:54,287 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:54,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1905854791, now seen corresponding path program 1 times [2025-04-30 10:42:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:54,288 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828750860] [2025-04-30 10:42:54,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:54,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:42:54,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:42:54,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:54,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:54,447 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 10:42:54,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:54,447 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828750860] [2025-04-30 10:42:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828750860] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:54,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:54,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:42:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914444876] [2025-04-30 10:42:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:54,448 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:42:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:54,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:42:54,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:42:54,449 INFO L87 Difference]: Start difference. First operand 186 states and 221 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:54,732 INFO L93 Difference]: Finished difference Result 223 states and 259 transitions. [2025-04-30 10:42:54,732 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-30 10:42:54,733 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-30 10:42:54,733 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:54,733 INFO L225 Difference]: With dead ends: 223 [2025-04-30 10:42:54,733 INFO L226 Difference]: Without dead ends: 223 [2025-04-30 10:42:54,734 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 10:42:54,734 INFO L437 NwaCegarLoop]: 72 mSDtfsCounter, 189 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:54,734 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 435 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-04-30 10:42:54,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2025-04-30 10:42:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 171 states have (on average 1.391812865497076) internal successors, (238), 198 states have internal predecessors, (238), 0 states have call successors, (0), 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 10:42:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2025-04-30 10:42:54,737 INFO L79 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 24 [2025-04-30 10:42:54,738 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:54,738 INFO L485 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2025-04-30 10:42:54,738 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,738 INFO L278 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2025-04-30 10:42:54,738 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-30 10:42:54,738 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:54,739 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] [2025-04-30 10:42:54,739 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-04-30 10:42:54,739 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:54,739 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1905866767, now seen corresponding path program 1 times [2025-04-30 10:42:54,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:54,739 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996136693] [2025-04-30 10:42:54,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:54,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:42:54,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:42:54,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:54,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:54,812 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 10:42:54,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:54,813 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996136693] [2025-04-30 10:42:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996136693] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:54,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:42:54,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955571857] [2025-04-30 10:42:54,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:54,813 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:42:54,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:54,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:42:54,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:42:54,814 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:54,942 INFO L93 Difference]: Finished difference Result 241 states and 287 transitions. [2025-04-30 10:42:54,942 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:42:54,942 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-30 10:42:54,942 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:54,943 INFO L225 Difference]: With dead ends: 241 [2025-04-30 10:42:54,943 INFO L226 Difference]: Without dead ends: 241 [2025-04-30 10:42:54,943 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 10:42:54,943 INFO L437 NwaCegarLoop]: 85 mSDtfsCounter, 81 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:54,944 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 152 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:42:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-04-30 10:42:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 176. [2025-04-30 10:42:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 154 states have (on average 1.3506493506493507) internal successors, (208), 175 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 10:42:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2025-04-30 10:42:54,947 INFO L79 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 24 [2025-04-30 10:42:54,947 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:54,947 INFO L485 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2025-04-30 10:42:54,947 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:54,947 INFO L278 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2025-04-30 10:42:54,947 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-30 10:42:54,948 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:54,948 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] [2025-04-30 10:42:54,948 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-04-30 10:42:54,948 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:54,948 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash 691657154, now seen corresponding path program 1 times [2025-04-30 10:42:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:54,949 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805116789] [2025-04-30 10:42:54,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:54,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-30 10:42:54,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-30 10:42:54,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:54,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:55,352 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 10:42:55,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:55,353 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805116789] [2025-04-30 10:42:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805116789] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:55,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-04-30 10:42:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516403193] [2025-04-30 10:42:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:55,353 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-30 10:42:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:55,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-30 10:42:55,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-04-30 10:42:55,353 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 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 10:42:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:55,932 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2025-04-30 10:42:55,932 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-30 10:42:55,932 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2025-04-30 10:42:55,932 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:55,933 INFO L225 Difference]: With dead ends: 232 [2025-04-30 10:42:55,933 INFO L226 Difference]: Without dead ends: 232 [2025-04-30 10:42:55,934 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2025-04-30 10:42:55,934 INFO L437 NwaCegarLoop]: 55 mSDtfsCounter, 187 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:55,935 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 427 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-30 10:42:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2025-04-30 10:42:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 176. [2025-04-30 10:42:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 175 states have internal predecessors, (206), 0 states have call successors, (0), 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 10:42:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 206 transitions. [2025-04-30 10:42:55,942 INFO L79 Accepts]: Start accepts. Automaton has 176 states and 206 transitions. Word has length 25 [2025-04-30 10:42:55,942 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:55,942 INFO L485 AbstractCegarLoop]: Abstraction has 176 states and 206 transitions. [2025-04-30 10:42:55,942 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 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 10:42:55,942 INFO L278 IsEmpty]: Start isEmpty. Operand 176 states and 206 transitions. [2025-04-30 10:42:55,942 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:42:55,943 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:55,943 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 10:42:55,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-04-30 10:42:55,943 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:55,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1022223888, now seen corresponding path program 1 times [2025-04-30 10:42:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:55,943 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325492509] [2025-04-30 10:42:55,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:55,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:55,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:55,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:55,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:55,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:56,112 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 10:42:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:56,113 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325492509] [2025-04-30 10:42:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325492509] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:56,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:42:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222844893] [2025-04-30 10:42:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:56,113 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:42:56,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:56,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:42:56,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:42:56,114 INFO L87 Difference]: Start difference. First operand 176 states and 206 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 10:42:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:56,423 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2025-04-30 10:42:56,424 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-30 10:42:56,424 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 10:42:56,424 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:56,425 INFO L225 Difference]: With dead ends: 204 [2025-04-30 10:42:56,425 INFO L226 Difference]: Without dead ends: 204 [2025-04-30 10:42:56,425 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-04-30 10:42:56,425 INFO L437 NwaCegarLoop]: 74 mSDtfsCounter, 137 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:56,425 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 381 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-04-30 10:42:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 175. [2025-04-30 10:42:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 154 states have (on average 1.3246753246753247) internal successors, (204), 174 states have internal predecessors, (204), 0 states have call successors, (0), 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 10:42:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2025-04-30 10:42:56,429 INFO L79 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 26 [2025-04-30 10:42:56,429 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:56,429 INFO L485 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2025-04-30 10:42:56,429 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 10:42:56,429 INFO L278 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2025-04-30 10:42:56,429 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:42:56,429 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:56,429 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 10:42:56,429 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-04-30 10:42:56,430 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:56,430 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1022223889, now seen corresponding path program 1 times [2025-04-30 10:42:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:56,430 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937334697] [2025-04-30 10:42:56,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:56,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:42:56,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:42:56,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:56,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:56,644 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 10:42:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:56,645 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937334697] [2025-04-30 10:42:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937334697] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:56,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:56,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:42:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853606074] [2025-04-30 10:42:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:56,645 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:42:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:56,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:42:56,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:42:56,646 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 10:42:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:56,922 INFO L93 Difference]: Finished difference Result 188 states and 218 transitions. [2025-04-30 10:42:56,922 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:42:56,923 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 10:42:56,923 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:56,924 INFO L225 Difference]: With dead ends: 188 [2025-04-30 10:42:56,924 INFO L226 Difference]: Without dead ends: 188 [2025-04-30 10:42:56,924 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-30 10:42:56,924 INFO L437 NwaCegarLoop]: 66 mSDtfsCounter, 123 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:56,925 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 341 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-04-30 10:42:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 174. [2025-04-30 10:42:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 154 states have (on average 1.3116883116883118) internal successors, (202), 173 states have internal predecessors, (202), 0 states have call successors, (0), 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 10:42:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2025-04-30 10:42:56,927 INFO L79 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 26 [2025-04-30 10:42:56,927 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:56,927 INFO L485 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2025-04-30 10:42:56,927 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 10:42:56,928 INFO L278 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2025-04-30 10:42:56,928 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-30 10:42:56,928 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:56,928 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] [2025-04-30 10:42:56,928 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-04-30 10:42:56,928 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:56,928 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1751675432, now seen corresponding path program 1 times [2025-04-30 10:42:56,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:56,929 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275516576] [2025-04-30 10:42:56,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:56,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:56,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:42:56,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:42:56,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:56,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:57,058 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 10:42:57,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:57,059 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275516576] [2025-04-30 10:42:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275516576] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:57,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:57,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:57,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553873656] [2025-04-30 10:42:57,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:57,059 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:57,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:57,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:57,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:57,060 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 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 10:42:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:57,304 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2025-04-30 10:42:57,305 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:57,305 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2025-04-30 10:42:57,305 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:57,305 INFO L225 Difference]: With dead ends: 187 [2025-04-30 10:42:57,305 INFO L226 Difference]: Without dead ends: 187 [2025-04-30 10:42:57,306 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 10:42:57,306 INFO L437 NwaCegarLoop]: 65 mSDtfsCounter, 118 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:57,306 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 336 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:57,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-04-30 10:42:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 173. [2025-04-30 10:42:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 154 states have (on average 1.3051948051948052) internal successors, (201), 172 states have internal predecessors, (201), 0 states have call successors, (0), 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 10:42:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 201 transitions. [2025-04-30 10:42:57,309 INFO L79 Accepts]: Start accepts. Automaton has 173 states and 201 transitions. Word has length 27 [2025-04-30 10:42:57,309 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:57,309 INFO L485 AbstractCegarLoop]: Abstraction has 173 states and 201 transitions. [2025-04-30 10:42:57,309 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 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 10:42:57,309 INFO L278 IsEmpty]: Start isEmpty. Operand 173 states and 201 transitions. [2025-04-30 10:42:57,309 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-30 10:42:57,309 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:57,309 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] [2025-04-30 10:42:57,310 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-04-30 10:42:57,310 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:57,310 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1751675431, now seen corresponding path program 1 times [2025-04-30 10:42:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:57,310 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964710456] [2025-04-30 10:42:57,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:57,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:42:57,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:42:57,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:57,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:57,478 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 10:42:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:57,478 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964710456] [2025-04-30 10:42:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964710456] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:42:57,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:42:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:42:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928889091] [2025-04-30 10:42:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:42:57,479 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:42:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:57,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:42:57,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:42:57,479 INFO L87 Difference]: Start difference. First operand 173 states and 201 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 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 10:42:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:57,742 INFO L93 Difference]: Finished difference Result 186 states and 216 transitions. [2025-04-30 10:42:57,742 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-30 10:42:57,743 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2025-04-30 10:42:57,743 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:57,743 INFO L225 Difference]: With dead ends: 186 [2025-04-30 10:42:57,743 INFO L226 Difference]: Without dead ends: 186 [2025-04-30 10:42:57,744 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 10:42:57,744 INFO L437 NwaCegarLoop]: 65 mSDtfsCounter, 115 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:57,744 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 340 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:42:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-04-30 10:42:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2025-04-30 10:42:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 154 states have (on average 1.2987012987012987) internal successors, (200), 171 states have internal predecessors, (200), 0 states have call successors, (0), 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 10:42:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 200 transitions. [2025-04-30 10:42:57,747 INFO L79 Accepts]: Start accepts. Automaton has 172 states and 200 transitions. Word has length 27 [2025-04-30 10:42:57,748 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:57,748 INFO L485 AbstractCegarLoop]: Abstraction has 172 states and 200 transitions. [2025-04-30 10:42:57,748 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 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 10:42:57,748 INFO L278 IsEmpty]: Start isEmpty. Operand 172 states and 200 transitions. [2025-04-30 10:42:57,748 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-30 10:42:57,748 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:57,748 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] [2025-04-30 10:42:57,748 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-04-30 10:42:57,748 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:42:57,749 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:42:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2147147519, now seen corresponding path program 1 times [2025-04-30 10:42:57,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:42:57,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753868223] [2025-04-30 10:42:57,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:42:57,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:42:57,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:42:57,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:57,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:57,981 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 10:42:57,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:42:57,982 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753868223] [2025-04-30 10:42:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753868223] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:42:57,982 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73758671] [2025-04-30 10:42:57,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:42:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:42:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:42:57,984 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 10:42:57,986 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 10:42:58,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:42:58,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:42:58,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:42:58,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:42:58,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-30 10:42:58,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:42:58,192 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 10:42:58,258 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:42:58,259 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 46 treesize of output 36 [2025-04-30 10:42:58,509 WARN L871 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~st~0#1.base_28| Int) (|v_ULTIMATE.start_main_~n~0#1.base_84| Int)) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~st~0#1.base_28| 0) |v_ULTIMATE.start_main_~n~0#1.base_84| 0)) (= 0 (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~n~0#1.base_84| 1) |v_ULTIMATE.start_main_~st~0#1.base_28|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~n~0#1.base_84|) 0))) is different from true [2025-04-30 10:42:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-04-30 10:42:58,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:42:58,627 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 22 treesize of output 20 [2025-04-30 10:42:58,629 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 38 treesize of output 36 [2025-04-30 10:42:58,881 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 10:42:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73758671] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:42:58,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:42:58,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2025-04-30 10:42:58,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960959016] [2025-04-30 10:42:58,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:42:58,881 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-30 10:42:58,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:42:58,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-30 10:42:58,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=582, Unknown=1, NotChecked=48, Total=702 [2025-04-30 10:42:58,882 INFO L87 Difference]: Start difference. First operand 172 states and 200 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:42:59,867 INFO L93 Difference]: Finished difference Result 217 states and 248 transitions. [2025-04-30 10:42:59,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-30 10:42:59,867 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-30 10:42:59,867 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:42:59,868 INFO L225 Difference]: With dead ends: 217 [2025-04-30 10:42:59,868 INFO L226 Difference]: Without dead ends: 216 [2025-04-30 10:42:59,869 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1186, Unknown=1, NotChecked=70, Total=1406 [2025-04-30 10:42:59,869 INFO L437 NwaCegarLoop]: 78 mSDtfsCounter, 82 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-30 10:42:59,869 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 884 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1185 Invalid, 0 Unknown, 171 Unchecked, 0.7s Time] [2025-04-30 10:42:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-04-30 10:42:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 191. [2025-04-30 10:42:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 173 states have (on average 1.277456647398844) internal successors, (221), 190 states have internal predecessors, (221), 0 states have call successors, (0), 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 10:42:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 221 transitions. [2025-04-30 10:42:59,872 INFO L79 Accepts]: Start accepts. Automaton has 191 states and 221 transitions. Word has length 27 [2025-04-30 10:42:59,872 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:42:59,872 INFO L485 AbstractCegarLoop]: Abstraction has 191 states and 221 transitions. [2025-04-30 10:42:59,873 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:42:59,873 INFO L278 IsEmpty]: Start isEmpty. Operand 191 states and 221 transitions. [2025-04-30 10:42:59,873 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-30 10:42:59,873 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:42:59,873 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] [2025-04-30 10:42:59,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-30 10:43:00,077 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:00,077 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:00,078 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:00,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2147149439, now seen corresponding path program 1 times [2025-04-30 10:43:00,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:00,078 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591015344] [2025-04-30 10:43:00,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:00,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:43:00,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:43:00,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:00,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:00,190 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 10:43:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:00,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591015344] [2025-04-30 10:43:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591015344] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:43:00,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085807911] [2025-04-30 10:43:00,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:00,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:43:00,192 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 10:43:00,194 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 10:43:00,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:43:00,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:43:00,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:00,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:00,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-30 10:43:00,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:43:00,287 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 10:43:00,295 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 10:43:00,300 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 10:43:00,304 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 10:43:00,336 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 10:43:00,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:43:00,371 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 10:43:00,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085807911] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:43:00,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:43:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-04-30 10:43:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538722838] [2025-04-30 10:43:00,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:43:00,372 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:43:00,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:00,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:43:00,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:43:00,372 INFO L87 Difference]: Start difference. First operand 191 states and 221 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 10:43:00,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:00,428 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2025-04-30 10:43:00,428 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:43:00,428 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2025-04-30 10:43:00,428 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:00,428 INFO L225 Difference]: With dead ends: 194 [2025-04-30 10:43:00,429 INFO L226 Difference]: Without dead ends: 190 [2025-04-30 10:43:00,429 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 10:43:00,429 INFO L437 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:00,429 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 349 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:43:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-04-30 10:43:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2025-04-30 10:43:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 188 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 10:43:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 218 transitions. [2025-04-30 10:43:00,432 INFO L79 Accepts]: Start accepts. Automaton has 189 states and 218 transitions. Word has length 27 [2025-04-30 10:43:00,432 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:00,432 INFO L485 AbstractCegarLoop]: Abstraction has 189 states and 218 transitions. [2025-04-30 10:43:00,432 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 10:43:00,432 INFO L278 IsEmpty]: Start isEmpty. Operand 189 states and 218 transitions. [2025-04-30 10:43:00,433 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-04-30 10:43:00,433 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:00,433 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 10:43:00,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-30 10:43:00,633 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,SelfDestructingSolverStorable30 [2025-04-30 10:43:00,634 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:00,634 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -310044012, now seen corresponding path program 1 times [2025-04-30 10:43:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:00,634 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5185596] [2025-04-30 10:43:00,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:00,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-30 10:43:00,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-30 10:43:00,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:00,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:00,781 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 10:43:00,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:00,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5185596] [2025-04-30 10:43:00,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5185596] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:00,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:00,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:43:00,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082547617] [2025-04-30 10:43:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:00,782 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:43:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:00,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:43:00,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:43:00,782 INFO L87 Difference]: Start difference. First operand 189 states and 218 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:01,044 INFO L93 Difference]: Finished difference Result 210 states and 241 transitions. [2025-04-30 10:43:01,044 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:43:01,044 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-04-30 10:43:01,044 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:01,045 INFO L225 Difference]: With dead ends: 210 [2025-04-30 10:43:01,045 INFO L226 Difference]: Without dead ends: 210 [2025-04-30 10:43:01,045 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-30 10:43:01,045 INFO L437 NwaCegarLoop]: 64 mSDtfsCounter, 114 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:01,046 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 330 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:43:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-04-30 10:43:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 188. [2025-04-30 10:43:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 171 states have (on average 1.2690058479532165) internal successors, (217), 187 states have internal predecessors, (217), 0 states have call successors, (0), 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 10:43:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 217 transitions. [2025-04-30 10:43:01,051 INFO L79 Accepts]: Start accepts. Automaton has 188 states and 217 transitions. Word has length 30 [2025-04-30 10:43:01,051 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:01,051 INFO L485 AbstractCegarLoop]: Abstraction has 188 states and 217 transitions. [2025-04-30 10:43:01,051 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,051 INFO L278 IsEmpty]: Start isEmpty. Operand 188 states and 217 transitions. [2025-04-30 10:43:01,052 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-04-30 10:43:01,052 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:01,052 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 10:43:01,052 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-04-30 10:43:01,052 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:01,052 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash -310044011, now seen corresponding path program 1 times [2025-04-30 10:43:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:01,052 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750107414] [2025-04-30 10:43:01,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:01,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-30 10:43:01,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-30 10:43:01,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:01,266 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 10:43:01,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:01,266 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750107414] [2025-04-30 10:43:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750107414] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:01,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:01,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:43:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378932748] [2025-04-30 10:43:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:01,266 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:43:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:01,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:43:01,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:43:01,267 INFO L87 Difference]: Start difference. First operand 188 states and 217 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:01,495 INFO L93 Difference]: Finished difference Result 209 states and 240 transitions. [2025-04-30 10:43:01,496 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:43:01,496 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-04-30 10:43:01,496 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:01,496 INFO L225 Difference]: With dead ends: 209 [2025-04-30 10:43:01,496 INFO L226 Difference]: Without dead ends: 209 [2025-04-30 10:43:01,497 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-30 10:43:01,497 INFO L437 NwaCegarLoop]: 64 mSDtfsCounter, 111 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:01,497 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 294 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:43:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-04-30 10:43:01,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 187. [2025-04-30 10:43:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 171 states have (on average 1.263157894736842) internal successors, (216), 186 states have internal predecessors, (216), 0 states have call successors, (0), 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 10:43:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2025-04-30 10:43:01,499 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 30 [2025-04-30 10:43:01,499 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:01,500 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2025-04-30 10:43:01,500 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,500 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2025-04-30 10:43:01,500 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-30 10:43:01,500 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:01,500 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, 1] [2025-04-30 10:43:01,500 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-04-30 10:43:01,500 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:01,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash -505950137, now seen corresponding path program 1 times [2025-04-30 10:43:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:01,500 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839775597] [2025-04-30 10:43:01,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:01,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-30 10:43:01,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-30 10:43:01,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:01,530 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 10:43:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:01,530 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839775597] [2025-04-30 10:43:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839775597] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:01,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:01,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:43:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690218117] [2025-04-30 10:43:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:01,531 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:43:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:01,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:43:01,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:43:01,531 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:01,566 INFO L93 Difference]: Finished difference Result 194 states and 218 transitions. [2025-04-30 10:43:01,566 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:43:01,566 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-30 10:43:01,566 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:01,567 INFO L225 Difference]: With dead ends: 194 [2025-04-30 10:43:01,567 INFO L226 Difference]: Without dead ends: 194 [2025-04-30 10:43:01,567 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 10:43:01,567 INFO L437 NwaCegarLoop]: 93 mSDtfsCounter, 17 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 262 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 10:43:01,567 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 262 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:43:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-04-30 10:43:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 187. [2025-04-30 10:43:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 171 states have (on average 1.2573099415204678) internal successors, (215), 186 states have internal predecessors, (215), 0 states have call successors, (0), 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 10:43:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 215 transitions. [2025-04-30 10:43:01,570 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 215 transitions. Word has length 31 [2025-04-30 10:43:01,570 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:01,570 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 215 transitions. [2025-04-30 10:43:01,570 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,570 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 215 transitions. [2025-04-30 10:43:01,570 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-30 10:43:01,570 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:01,570 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, 1] [2025-04-30 10:43:01,570 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-04-30 10:43:01,571 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:01,571 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash -505952057, now seen corresponding path program 1 times [2025-04-30 10:43:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:01,571 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498763425] [2025-04-30 10:43:01,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:01,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-30 10:43:01,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-30 10:43:01,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:01,640 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 10:43:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:01,641 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498763425] [2025-04-30 10:43:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498763425] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:43:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592082023] [2025-04-30 10:43:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:01,641 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:43:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:01,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:43:01,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:43:01,642 INFO L87 Difference]: Start difference. First operand 187 states and 215 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:01,783 INFO L93 Difference]: Finished difference Result 214 states and 240 transitions. [2025-04-30 10:43:01,783 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-30 10:43:01,783 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-30 10:43:01,783 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:01,784 INFO L225 Difference]: With dead ends: 214 [2025-04-30 10:43:01,784 INFO L226 Difference]: Without dead ends: 214 [2025-04-30 10:43:01,784 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 10:43:01,785 INFO L437 NwaCegarLoop]: 68 mSDtfsCounter, 81 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:01,785 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 169 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:43:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-04-30 10:43:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 187. [2025-04-30 10:43:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 171 states have (on average 1.2514619883040936) internal successors, (214), 186 states have internal predecessors, (214), 0 states have call successors, (0), 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 10:43:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 214 transitions. [2025-04-30 10:43:01,787 INFO L79 Accepts]: Start accepts. Automaton has 187 states and 214 transitions. Word has length 31 [2025-04-30 10:43:01,787 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:01,787 INFO L485 AbstractCegarLoop]: Abstraction has 187 states and 214 transitions. [2025-04-30 10:43:01,788 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,788 INFO L278 IsEmpty]: Start isEmpty. Operand 187 states and 214 transitions. [2025-04-30 10:43:01,788 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-04-30 10:43:01,788 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:01,788 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, 1] [2025-04-30 10:43:01,788 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-04-30 10:43:01,788 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:01,788 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -888618072, now seen corresponding path program 1 times [2025-04-30 10:43:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:01,788 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10327519] [2025-04-30 10:43:01,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:01,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-04-30 10:43:01,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-04-30 10:43:01,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:01,826 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 10:43:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:01,827 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10327519] [2025-04-30 10:43:01,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10327519] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:01,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:01,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:43:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542457131] [2025-04-30 10:43:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:01,827 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:43:01,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:01,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:43:01,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:43:01,828 INFO L87 Difference]: Start difference. First operand 187 states and 214 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:01,899 INFO L93 Difference]: Finished difference Result 186 states and 212 transitions. [2025-04-30 10:43:01,899 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:43:01,899 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-04-30 10:43:01,899 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:01,900 INFO L225 Difference]: With dead ends: 186 [2025-04-30 10:43:01,900 INFO L226 Difference]: Without dead ends: 186 [2025-04-30 10:43:01,900 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 10:43:01,900 INFO L437 NwaCegarLoop]: 86 mSDtfsCounter, 11 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:01,900 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 174 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:43:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-04-30 10:43:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2025-04-30 10:43:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 171 states have (on average 1.239766081871345) internal successors, (212), 185 states have internal predecessors, (212), 0 states have call successors, (0), 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 10:43:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 212 transitions. [2025-04-30 10:43:01,904 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 212 transitions. Word has length 33 [2025-04-30 10:43:01,904 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:01,904 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 212 transitions. [2025-04-30 10:43:01,904 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:01,905 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 212 transitions. [2025-04-30 10:43:01,905 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-30 10:43:01,905 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:01,905 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, 1] [2025-04-30 10:43:01,905 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-04-30 10:43:01,905 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:01,905 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1049416667, now seen corresponding path program 1 times [2025-04-30 10:43:01,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:01,905 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062216032] [2025-04-30 10:43:01,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:01,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:01,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-30 10:43:01,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-30 10:43:01,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:01,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:02,418 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 10:43:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:02,419 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062216032] [2025-04-30 10:43:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062216032] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-04-30 10:43:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275099171] [2025-04-30 10:43:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:02,420 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-30 10:43:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:02,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-30 10:43:02,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:43:02,421 INFO L87 Difference]: Start difference. First operand 186 states and 212 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:02,857 INFO L93 Difference]: Finished difference Result 207 states and 234 transitions. [2025-04-30 10:43:02,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-30 10:43:02,858 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-30 10:43:02,858 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:02,858 INFO L225 Difference]: With dead ends: 207 [2025-04-30 10:43:02,858 INFO L226 Difference]: Without dead ends: 196 [2025-04-30 10:43:02,859 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2025-04-30 10:43:02,859 INFO L437 NwaCegarLoop]: 76 mSDtfsCounter, 150 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:02,859 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 534 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:43:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-04-30 10:43:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 186. [2025-04-30 10:43:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 171 states have (on average 1.2339181286549707) internal successors, (211), 185 states have internal predecessors, (211), 0 states have call successors, (0), 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 10:43:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2025-04-30 10:43:02,862 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 38 [2025-04-30 10:43:02,862 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:02,862 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2025-04-30 10:43:02,862 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:02,862 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2025-04-30 10:43:02,863 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-30 10:43:02,863 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:02,863 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, 1] [2025-04-30 10:43:02,863 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-04-30 10:43:02,863 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:02,864 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash -659009819, now seen corresponding path program 1 times [2025-04-30 10:43:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:02,865 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187309680] [2025-04-30 10:43:02,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:02,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:02,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-30 10:43:02,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-30 10:43:02,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:02,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:03,223 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 10:43:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:03,224 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187309680] [2025-04-30 10:43:03,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187309680] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:43:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:43:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-04-30 10:43:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202907946] [2025-04-30 10:43:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:43:03,224 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-30 10:43:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:03,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-30 10:43:03,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-04-30 10:43:03,225 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:03,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:03,593 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2025-04-30 10:43:03,593 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-30 10:43:03,593 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-30 10:43:03,593 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:03,594 INFO L225 Difference]: With dead ends: 208 [2025-04-30 10:43:03,594 INFO L226 Difference]: Without dead ends: 185 [2025-04-30 10:43:03,594 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2025-04-30 10:43:03,594 INFO L437 NwaCegarLoop]: 63 mSDtfsCounter, 221 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:03,594 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 574 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:43:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-04-30 10:43:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2025-04-30 10:43:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 156 states have (on average 1.25) internal successors, (195), 170 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 195 transitions. [2025-04-30 10:43:03,596 INFO L79 Accepts]: Start accepts. Automaton has 171 states and 195 transitions. Word has length 38 [2025-04-30 10:43:03,596 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:03,596 INFO L485 AbstractCegarLoop]: Abstraction has 171 states and 195 transitions. [2025-04-30 10:43:03,596 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:43:03,597 INFO L278 IsEmpty]: Start isEmpty. Operand 171 states and 195 transitions. [2025-04-30 10:43:03,597 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-30 10:43:03,597 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:03,597 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, 1, 1, 1, 1] [2025-04-30 10:43:03,597 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-04-30 10:43:03,597 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:03,597 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 69220979, now seen corresponding path program 1 times [2025-04-30 10:43:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:03,597 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051650670] [2025-04-30 10:43:03,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:03,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-30 10:43:03,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-30 10:43:03,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:03,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:03,969 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 10:43:03,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:03,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051650670] [2025-04-30 10:43:03,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051650670] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:43:03,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992473561] [2025-04-30 10:43:03,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:03,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:43:03,971 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 10:43:03,973 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 10:43:04,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-30 10:43:04,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-30 10:43:04,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:04,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:04,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-04-30 10:43:04,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:43:04,097 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 10:43:04,100 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 10:43:04,103 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 21 treesize of output 20 [2025-04-30 10:43:04,108 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 10:43:04,130 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 21 treesize of output 20 [2025-04-30 10:43:04,136 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2025-04-30 10:43:04,449 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-30 10:43:04,449 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 11 treesize of output 11 [2025-04-30 10:43:04,502 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-30 10:43:04,503 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-30 10:43:04,505 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2025-04-30 10:43:04,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-30 10:43:04,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-30 10:43:04,513 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-30 10:43:04,518 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-30 10:43:04,518 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 26 [2025-04-30 10:43:04,633 INFO L325 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-04-30 10:43:04,633 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 67 treesize of output 60 [2025-04-30 10:43:04,640 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 37 treesize of output 18 [2025-04-30 10:43:04,736 INFO L325 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-04-30 10:43:04,737 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 67 treesize of output 60 [2025-04-30 10:43:04,742 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 37 treesize of output 18 [2025-04-30 10:43:04,820 INFO L325 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-04-30 10:43:04,820 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 67 treesize of output 60 [2025-04-30 10:43:04,823 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 37 treesize of output 18 [2025-04-30 10:43:04,904 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 10:43:04,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:43:04,966 WARN L849 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)))) (and (forall ((v_ArrVal_1456 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1456) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1457 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1457) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)))) is different from false [2025-04-30 10:43:04,975 WARN L849 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (and (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem23#1.base| v_ArrVal_1455) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem23#1.base| v_ArrVal_1454) |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_1457) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1456 (Array Int Int)) (v_ArrVal_1454 (Array Int Int))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem23#1.base| v_ArrVal_1454))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_1456)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)))) is different from false [2025-04-30 10:43:05,040 WARN L849 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (and (forall ((v_ArrVal_1456 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int))) (= (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1453))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1454)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1456)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int))) (= (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1453))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1452) .cse3 v_ArrVal_1455) (select (select (store .cse4 .cse3 v_ArrVal_1454) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1457))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)))) is different from false [2025-04-30 10:43:05,111 WARN L849 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~malloc21#1.base|)))) (and (forall ((v_ArrVal_1456 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int))) (= (select (select (let ((.cse0 (let ((.cse2 (store .cse3 |c_ULTIMATE.start_main_#t~malloc21#1.base| v_ArrVal_1453))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1454)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1456)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1449 Int)) (= (select (select (let ((.cse5 (store .cse3 |c_ULTIMATE.start_main_#t~malloc21#1.base| v_ArrVal_1453))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1449)) |c_ULTIMATE.start_main_#t~malloc21#1.base| v_ArrVal_1452) .cse4 v_ArrVal_1455) (select (select (store .cse5 .cse4 v_ArrVal_1454) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1457))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))))) is different from false [2025-04-30 10:43:05,308 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:05,308 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 212 [2025-04-30 10:43:05,511 WARN L849 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~root~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_prenex_2 Int) (v_ArrVal_1456 (Array Int Int)) (v_prenex_1 (Array Int Int)) (v_prenex_3 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~root~0#1.base| v_prenex_2) (= (select (select (let ((.cse0 (let ((.cse2 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~root~0#1.base| (store .cse3 .cse1 v_prenex_2)) v_prenex_2 v_prenex_3))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) v_prenex_1)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) v_ArrVal_1456)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))) (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc21#1.base_9| Int) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1449 Int)) (or (= (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~root~0#1.base| (store .cse3 .cse1 |v_ULTIMATE.start_main_#t~malloc21#1.base_9|)) |v_ULTIMATE.start_main_#t~malloc21#1.base_9| v_ArrVal_1453))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~root~0#1.base|) .cse1))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~root~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~root~0#1.base|) .cse1 v_ArrVal_1449)) |v_ULTIMATE.start_main_#t~malloc21#1.base_9| v_ArrVal_1452) .cse4 v_ArrVal_1455) (select (select (store .cse5 .cse4 v_ArrVal_1454) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) v_ArrVal_1457))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~root~0#1.base| |v_ULTIMATE.start_main_#t~malloc21#1.base_9|))))) is different from false [2025-04-30 10:43:05,549 WARN L849 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 8))) (let ((.cse4 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~root~0#1.base|) .cse0 0)) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc21#1.base_9| Int) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1449 Int)) (or (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~root~0#1.base| (store .cse4 .cse1 |v_ULTIMATE.start_main_#t~malloc21#1.base_9|)) |v_ULTIMATE.start_main_#t~malloc21#1.base_9| v_ArrVal_1453))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~root~0#1.base|) .cse1))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~root~0#1.base| (store (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~root~0#1.base|) .cse0 0) .cse1 v_ArrVal_1449)) |v_ULTIMATE.start_main_#t~malloc21#1.base_9| v_ArrVal_1452) .cse2 v_ArrVal_1455) (select (select (store .cse3 .cse2 v_ArrVal_1454) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) v_ArrVal_1457))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~root~0#1.base| |v_ULTIMATE.start_main_#t~malloc21#1.base_9|))) (forall ((v_prenex_2 Int) (v_ArrVal_1456 (Array Int Int)) (v_prenex_1 (Array Int Int)) (v_prenex_3 (Array Int Int))) (or (= (select (select (let ((.cse5 (let ((.cse6 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~root~0#1.base| (store .cse4 .cse1 v_prenex_2)) v_prenex_2 v_prenex_3))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) v_prenex_1)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) v_ArrVal_1456)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~root~0#1.base| v_prenex_2)))))) is different from false [2025-04-30 10:43:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2025-04-30 10:43:05,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992473561] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:43:05,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:43:05,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 38 [2025-04-30 10:43:05,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020512241] [2025-04-30 10:43:05,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:43:05,574 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-30 10:43:05,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:43:05,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-30 10:43:05,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=798, Unknown=52, NotChecked=390, Total=1406 [2025-04-30 10:43:05,575 INFO L87 Difference]: Start difference. First operand 171 states and 195 transitions. Second operand has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 0 states have call successors, (0), 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 10:43:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:43:06,941 INFO L93 Difference]: Finished difference Result 289 states and 332 transitions. [2025-04-30 10:43:06,941 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-30 10:43:06,941 INFO L79 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 0 states have call successors, (0), 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 45 [2025-04-30 10:43:06,941 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:43:06,942 INFO L225 Difference]: With dead ends: 289 [2025-04-30 10:43:06,942 INFO L226 Difference]: Without dead ends: 289 [2025-04-30 10:43:06,943 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=540, Invalid=2393, Unknown=61, NotChecked=666, Total=3660 [2025-04-30 10:43:06,943 INFO L437 NwaCegarLoop]: 84 mSDtfsCounter, 309 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1424 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-30 10:43:06,943 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1118 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1097 Invalid, 0 Unknown, 1424 Unchecked, 0.7s Time] [2025-04-30 10:43:06,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-04-30 10:43:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 197. [2025-04-30 10:43:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 182 states have (on average 1.2417582417582418) internal successors, (226), 196 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 10:43:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 226 transitions. [2025-04-30 10:43:06,946 INFO L79 Accepts]: Start accepts. Automaton has 197 states and 226 transitions. Word has length 45 [2025-04-30 10:43:06,946 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:43:06,947 INFO L485 AbstractCegarLoop]: Abstraction has 197 states and 226 transitions. [2025-04-30 10:43:06,947 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 0 states have call successors, (0), 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 10:43:06,947 INFO L278 IsEmpty]: Start isEmpty. Operand 197 states and 226 transitions. [2025-04-30 10:43:06,947 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-30 10:43:06,947 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:43:06,947 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, 1, 1, 1, 1] [2025-04-30 10:43:06,954 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 10:43:07,147 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:07,148 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2025-04-30 10:43:07,148 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:43:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1194077392, now seen corresponding path program 1 times [2025-04-30 10:43:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:43:07,148 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75209684] [2025-04-30 10:43:07,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:43:07,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-30 10:43:07,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-30 10:43:07,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:07,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:43:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:43:07,397 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75209684] [2025-04-30 10:43:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75209684] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:43:07,397 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970355204] [2025-04-30 10:43:07,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:43:07,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:43:07,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:43:07,399 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 10:43:07,400 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 10:43:07,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-30 10:43:07,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-30 10:43:07,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:43:07,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:43:07,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-30 10:43:07,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:43:07,564 INFO L325 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-04-30 10:43:07,564 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 10:43:07,592 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 15 treesize of output 1 [2025-04-30 10:43:07,652 INFO L325 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-04-30 10:43:07,652 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 34 treesize of output 33 [2025-04-30 10:43:07,699 INFO L325 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-04-30 10:43:07,700 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 34 treesize of output 33 [2025-04-30 10:43:07,742 INFO L325 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-04-30 10:43:07,742 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 34 treesize of output 33 [2025-04-30 10:43:07,836 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 25 treesize of output 13 [2025-04-30 10:43:07,867 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 10:43:07,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:43:07,924 WARN L849 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1554 (Array Int Int)) (v_ArrVal_1553 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_1553))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_1554)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-04-30 10:43:07,927 WARN L849 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1554 (Array Int Int)) (v_ArrVal_1553 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_1553))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_1554)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-04-30 10:43:07,938 WARN L849 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1554 (Array Int Int)) (v_ArrVal_1553 (Array Int Int)) (v_ArrVal_1552 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1552))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_1553)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_1554)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-04-30 10:43:07,970 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:07,970 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 74 treesize of output 51 [2025-04-30 10:43:07,977 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:07,978 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 4836 treesize of output 4171 [2025-04-30 10:43:08,037 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:08,037 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 707 treesize of output 675 [2025-04-30 10:43:08,051 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:08,051 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 667 treesize of output 567 [2025-04-30 10:43:08,058 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 559 treesize of output 543 [2025-04-30 10:43:46,008 WARN L286 SmtUtils]: Spent 35.03s on a formula simplification that was a NOOP. DAG size: 4233 (called from [L 323] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2025-04-30 10:43:46,011 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:43:46,014 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 46 select indices, 46 select index equivalence classes, 0 disjoint index pairs (out of 1035 index pairs), introduced 46 new quantified variables, introduced 1035 case distinctions, treesize of input 641 treesize of output 8815 Killed by 15