./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0214.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0214.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 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:40:16,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:40:16,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:40:16,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:40:16,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:40:16,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:40:16,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:40:16,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:40:16,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:40:16,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:40:16,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:40:16,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:40:16,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:40:16,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:40:16,754 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:40:16,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:40:16,758 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:40:16,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:40:16,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:40:16,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:40:16,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:40:16,759 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:40:16,759 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:40:16,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:40:16,759 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:40:16,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:40:16,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:40:16,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:40:16,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:40:16,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:40:16,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:40:16,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:40:16,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:40:16,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:40:16,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:40:16,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:40:16,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:40:16,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:40:16,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:40:16,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:40:16,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:40:16,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:40:16,763 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 [2024-11-22 18:40:16,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:40:16,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:40:16,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:40:16,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:40:16,994 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:40:16,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0214.i [2024-11-22 18:40:18,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:40:18,373 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:40:18,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0214.i [2024-11-22 18:40:18,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbef531d/8e9170c9a2774c918588fb819ad75c97/FLAGa424aa4fd [2024-11-22 18:40:18,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbef531d/8e9170c9a2774c918588fb819ad75c97 [2024-11-22 18:40:18,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:40:18,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:40:18,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:40:18,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:40:18,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:40:18,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:40:18" (1/1) ... [2024-11-22 18:40:18,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b543e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:18, skipping insertion in model container [2024-11-22 18:40:18,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:40:18" (1/1) ... [2024-11-22 18:40:18,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:40:19,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:40:19,105 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:40:19,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:40:19,182 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:40:19,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19 WrapperNode [2024-11-22 18:40:19,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:40:19,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:40:19,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:40:19,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:40:19,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,230 INFO L138 Inliner]: procedures = 181, calls = 42, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 176 [2024-11-22 18:40:19,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:40:19,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:40:19,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:40:19,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:40:19,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,265 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 7, 18]. 67 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 2]. The 11 writes are split as follows [0, 5, 6]. [2024-11-22 18:40:19,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:40:19,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:40:19,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:40:19,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:40:19,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (1/1) ... [2024-11-22 18:40:19,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:40:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:40:19,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 18:40:19,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 18:40:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2024-11-22 18:40:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2024-11-22 18:40:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:40:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:40:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 18:40:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 18:40:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:40:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 18:40:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 18:40:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 18:40:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 18:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 18:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 18:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 18:40:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 18:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 18:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 18:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 18:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 18:40:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:40:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:40:19,489 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:40:19,491 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:40:19,799 INFO L? ?]: Removed 153 outVars from TransFormulas that were not future-live. [2024-11-22 18:40:19,800 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:40:19,814 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:40:19,818 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 18:40:19,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:40:19 BoogieIcfgContainer [2024-11-22 18:40:19,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:40:19,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:40:19,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:40:19,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:40:19,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:40:18" (1/3) ... [2024-11-22 18:40:19,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c63dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:40:19, skipping insertion in model container [2024-11-22 18:40:19,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:40:19" (2/3) ... [2024-11-22 18:40:19,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c63dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:40:19, skipping insertion in model container [2024-11-22 18:40:19,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:40:19" (3/3) ... [2024-11-22 18:40:19,828 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0214.i [2024-11-22 18:40:19,842 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:40:19,842 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2024-11-22 18:40:19,881 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:40:19,886 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63c6f7a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:40:19,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-11-22 18:40:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 81 states have (on average 1.9506172839506173) internal successors, (158), 138 states have internal predecessors, (158), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:40:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:40:19,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:19,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:40:19,897 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:19,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:19,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1072948778, now seen corresponding path program 1 times [2024-11-22 18:40:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586271982] [2024-11-22 18:40:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:20,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586271982] [2024-11-22 18:40:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586271982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:20,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:20,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:40:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940908401] [2024-11-22 18:40:20,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:20,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:40:20,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:20,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:40:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:40:20,061 INFO L87 Difference]: Start difference. First operand has 142 states, 81 states have (on average 1.9506172839506173) internal successors, (158), 138 states have internal predecessors, (158), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:20,084 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2024-11-22 18:40:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:40:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-22 18:40:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:20,092 INFO L225 Difference]: With dead ends: 142 [2024-11-22 18:40:20,092 INFO L226 Difference]: Without dead ends: 140 [2024-11-22 18:40:20,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:40:20,096 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:20,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:40:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-22 18:40:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-22 18:40:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 80 states have (on average 1.8875) internal successors, (151), 136 states have internal predecessors, (151), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:40:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2024-11-22 18:40:20,195 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 6 [2024-11-22 18:40:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:20,195 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2024-11-22 18:40:20,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2024-11-22 18:40:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:40:20,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:20,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:20,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:40:20,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:20,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1280381875, now seen corresponding path program 1 times [2024-11-22 18:40:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554490646] [2024-11-22 18:40:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:20,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:20,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554490646] [2024-11-22 18:40:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554490646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:20,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:20,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:40:20,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165060860] [2024-11-22 18:40:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:20,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:40:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:40:20,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:40:20,311 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:20,492 INFO L93 Difference]: Finished difference Result 271 states and 300 transitions. [2024-11-22 18:40:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:40:20,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:40:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:20,495 INFO L225 Difference]: With dead ends: 271 [2024-11-22 18:40:20,495 INFO L226 Difference]: Without dead ends: 271 [2024-11-22 18:40:20,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:40:20,496 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 136 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:20,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 195 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:40:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-22 18:40:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 189. [2024-11-22 18:40:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.8571428571428572) internal successors, (234), 182 states have internal predecessors, (234), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 18:40:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 242 transitions. [2024-11-22 18:40:20,517 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 242 transitions. Word has length 7 [2024-11-22 18:40:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:20,518 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 242 transitions. [2024-11-22 18:40:20,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 242 transitions. [2024-11-22 18:40:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:40:20,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:20,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:20,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:40:20,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:20,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1280381874, now seen corresponding path program 1 times [2024-11-22 18:40:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462329459] [2024-11-22 18:40:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:20,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:20,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462329459] [2024-11-22 18:40:20,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462329459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:20,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:20,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:40:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311826524] [2024-11-22 18:40:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:20,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:20,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:20,674 INFO L87 Difference]: Start difference. First operand 189 states and 242 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:20,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:20,810 INFO L93 Difference]: Finished difference Result 319 states and 397 transitions. [2024-11-22 18:40:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:20,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:40:20,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:20,812 INFO L225 Difference]: With dead ends: 319 [2024-11-22 18:40:20,812 INFO L226 Difference]: Without dead ends: 319 [2024-11-22 18:40:20,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:20,813 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 106 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:20,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 328 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-22 18:40:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 262. [2024-11-22 18:40:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 193 states have (on average 1.8186528497409327) internal successors, (351), 251 states have internal predecessors, (351), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:40:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 367 transitions. [2024-11-22 18:40:20,829 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 367 transitions. Word has length 7 [2024-11-22 18:40:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:20,829 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 367 transitions. [2024-11-22 18:40:20,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 367 transitions. [2024-11-22 18:40:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:40:20,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:20,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:20,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:40:20,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:20,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:20,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1280381812, now seen corresponding path program 1 times [2024-11-22 18:40:20,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:20,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542932542] [2024-11-22 18:40:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:20,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:20,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:20,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542932542] [2024-11-22 18:40:20,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542932542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:20,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:20,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:40:20,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143516141] [2024-11-22 18:40:20,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:20,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:20,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:20,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:20,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:20,912 INFO L87 Difference]: Start difference. First operand 262 states and 367 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:21,016 INFO L93 Difference]: Finished difference Result 318 states and 395 transitions. [2024-11-22 18:40:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:40:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:21,019 INFO L225 Difference]: With dead ends: 318 [2024-11-22 18:40:21,019 INFO L226 Difference]: Without dead ends: 318 [2024-11-22 18:40:21,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:21,020 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:21,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 303 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-22 18:40:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 262. [2024-11-22 18:40:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 193 states have (on average 1.8186528497409327) internal successors, (351), 251 states have internal predecessors, (351), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:40:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 367 transitions. [2024-11-22 18:40:21,037 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 367 transitions. Word has length 7 [2024-11-22 18:40:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:21,037 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 367 transitions. [2024-11-22 18:40:21,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 367 transitions. [2024-11-22 18:40:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:40:21,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:21,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:21,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 18:40:21,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:21,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash -251697362, now seen corresponding path program 1 times [2024-11-22 18:40:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:21,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770182478] [2024-11-22 18:40:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:21,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:21,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770182478] [2024-11-22 18:40:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770182478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:21,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:40:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521050191] [2024-11-22 18:40:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:21,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:40:21,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:21,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:40:21,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:40:21,193 INFO L87 Difference]: Start difference. First operand 262 states and 367 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:21,364 INFO L93 Difference]: Finished difference Result 400 states and 533 transitions. [2024-11-22 18:40:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:40:21,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 18:40:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:21,367 INFO L225 Difference]: With dead ends: 400 [2024-11-22 18:40:21,367 INFO L226 Difference]: Without dead ends: 400 [2024-11-22 18:40:21,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:21,368 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 127 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:21,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 645 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-22 18:40:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 304. [2024-11-22 18:40:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 232 states have (on average 1.8017241379310345) internal successors, (418), 291 states have internal predecessors, (418), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 438 transitions. [2024-11-22 18:40:21,377 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 438 transitions. Word has length 10 [2024-11-22 18:40:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:21,377 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 438 transitions. [2024-11-22 18:40:21,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 438 transitions. [2024-11-22 18:40:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:40:21,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:21,378 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:21,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 18:40:21,378 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:21,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash -249850320, now seen corresponding path program 1 times [2024-11-22 18:40:21,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:21,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498871134] [2024-11-22 18:40:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:21,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:21,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498871134] [2024-11-22 18:40:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498871134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:40:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076019196] [2024-11-22 18:40:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:21,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:40:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:40:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:40:21,466 INFO L87 Difference]: Start difference. First operand 304 states and 438 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:21,570 INFO L93 Difference]: Finished difference Result 390 states and 522 transitions. [2024-11-22 18:40:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:40:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 18:40:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:21,572 INFO L225 Difference]: With dead ends: 390 [2024-11-22 18:40:21,572 INFO L226 Difference]: Without dead ends: 390 [2024-11-22 18:40:21,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:21,572 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 112 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:21,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 669 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-22 18:40:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 303. [2024-11-22 18:40:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 231 states have (on average 1.8051948051948052) internal successors, (417), 290 states have internal predecessors, (417), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 437 transitions. [2024-11-22 18:40:21,579 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 437 transitions. Word has length 10 [2024-11-22 18:40:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:21,580 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 437 transitions. [2024-11-22 18:40:21,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 437 transitions. [2024-11-22 18:40:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 18:40:21,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:21,580 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:21,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:40:21,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:21,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 787315061, now seen corresponding path program 1 times [2024-11-22 18:40:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421165610] [2024-11-22 18:40:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421165610] [2024-11-22 18:40:21,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421165610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:21,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:40:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599285145] [2024-11-22 18:40:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:21,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:40:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:40:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:40:21,597 INFO L87 Difference]: Start difference. First operand 303 states and 437 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:21,669 INFO L93 Difference]: Finished difference Result 358 states and 488 transitions. [2024-11-22 18:40:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:40:21,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-22 18:40:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:21,670 INFO L225 Difference]: With dead ends: 358 [2024-11-22 18:40:21,671 INFO L226 Difference]: Without dead ends: 351 [2024-11-22 18:40:21,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:40:21,671 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 68 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:21,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 223 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-22 18:40:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 300. [2024-11-22 18:40:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 228 states have (on average 1.8070175438596492) internal successors, (412), 287 states have internal predecessors, (412), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 432 transitions. [2024-11-22 18:40:21,678 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 432 transitions. Word has length 11 [2024-11-22 18:40:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:21,678 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 432 transitions. [2024-11-22 18:40:21,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:40:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 432 transitions. [2024-11-22 18:40:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:40:21,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:21,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:21,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:40:21,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:21,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1918130468, now seen corresponding path program 1 times [2024-11-22 18:40:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:21,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424941238] [2024-11-22 18:40:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:21,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424941238] [2024-11-22 18:40:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424941238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:40:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832057693] [2024-11-22 18:40:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:21,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:21,722 INFO L87 Difference]: Start difference. First operand 300 states and 432 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:21,862 INFO L93 Difference]: Finished difference Result 396 states and 528 transitions. [2024-11-22 18:40:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:21,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-22 18:40:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:21,864 INFO L225 Difference]: With dead ends: 396 [2024-11-22 18:40:21,864 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 18:40:21,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:40:21,865 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 163 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:21,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 279 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 18:40:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 300. [2024-11-22 18:40:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 228 states have (on average 1.780701754385965) internal successors, (406), 287 states have internal predecessors, (406), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 426 transitions. [2024-11-22 18:40:21,871 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 426 transitions. Word has length 13 [2024-11-22 18:40:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:21,871 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 426 transitions. [2024-11-22 18:40:21,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 426 transitions. [2024-11-22 18:40:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:40:21,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:21,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:21,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:40:21,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:21,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1918130467, now seen corresponding path program 1 times [2024-11-22 18:40:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153737653] [2024-11-22 18:40:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:21,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:21,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153737653] [2024-11-22 18:40:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153737653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:21,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:40:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274692932] [2024-11-22 18:40:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:21,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:40:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:21,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:40:21,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:40:21,980 INFO L87 Difference]: Start difference. First operand 300 states and 426 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:22,149 INFO L93 Difference]: Finished difference Result 369 states and 472 transitions. [2024-11-22 18:40:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:40:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-22 18:40:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:22,150 INFO L225 Difference]: With dead ends: 369 [2024-11-22 18:40:22,150 INFO L226 Difference]: Without dead ends: 369 [2024-11-22 18:40:22,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:22,151 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 108 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:22,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 579 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-22 18:40:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 310. [2024-11-22 18:40:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 235 states have (on average 1.7617021276595746) internal successors, (414), 295 states have internal predecessors, (414), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (16), 9 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 18:40:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 440 transitions. [2024-11-22 18:40:22,157 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 440 transitions. Word has length 13 [2024-11-22 18:40:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:22,158 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 440 transitions. [2024-11-22 18:40:22,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 440 transitions. [2024-11-22 18:40:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:40:22,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:22,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:22,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:40:22,159 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:22,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1917206946, now seen corresponding path program 1 times [2024-11-22 18:40:22,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:22,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255562930] [2024-11-22 18:40:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255562930] [2024-11-22 18:40:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255562930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:40:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154463989] [2024-11-22 18:40:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:22,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:40:22,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:40:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:40:22,247 INFO L87 Difference]: Start difference. First operand 310 states and 440 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:22,422 INFO L93 Difference]: Finished difference Result 368 states and 470 transitions. [2024-11-22 18:40:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:40:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-22 18:40:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:22,424 INFO L225 Difference]: With dead ends: 368 [2024-11-22 18:40:22,424 INFO L226 Difference]: Without dead ends: 368 [2024-11-22 18:40:22,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:22,424 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 103 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:22,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 637 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-22 18:40:22,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 304. [2024-11-22 18:40:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 232 states have (on average 1.771551724137931) internal successors, (411), 289 states have internal predecessors, (411), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 431 transitions. [2024-11-22 18:40:22,431 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 431 transitions. Word has length 13 [2024-11-22 18:40:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:22,431 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 431 transitions. [2024-11-22 18:40:22,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 431 transitions. [2024-11-22 18:40:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 18:40:22,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:22,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:22,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 18:40:22,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:22,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:22,433 INFO L85 PathProgramCache]: Analyzing trace with hash 398929757, now seen corresponding path program 1 times [2024-11-22 18:40:22,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:22,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414011008] [2024-11-22 18:40:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:22,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414011008] [2024-11-22 18:40:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414011008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:22,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:40:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556835977] [2024-11-22 18:40:22,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:22,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:22,468 INFO L87 Difference]: Start difference. First operand 304 states and 431 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:22,598 INFO L93 Difference]: Finished difference Result 396 states and 526 transitions. [2024-11-22 18:40:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:22,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-22 18:40:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:22,600 INFO L225 Difference]: With dead ends: 396 [2024-11-22 18:40:22,600 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 18:40:22,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:40:22,600 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 134 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:22,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 286 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 18:40:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 310. [2024-11-22 18:40:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 238 states have (on average 1.7521008403361344) internal successors, (417), 295 states have internal predecessors, (417), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2024-11-22 18:40:22,606 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 15 [2024-11-22 18:40:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:22,607 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2024-11-22 18:40:22,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2024-11-22 18:40:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 18:40:22,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:22,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:22,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 18:40:22,608 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:22,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 398929758, now seen corresponding path program 1 times [2024-11-22 18:40:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:22,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306153350] [2024-11-22 18:40:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306153350] [2024-11-22 18:40:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306153350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:22,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:40:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197499548] [2024-11-22 18:40:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:22,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:22,677 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:22,803 INFO L93 Difference]: Finished difference Result 359 states and 449 transitions. [2024-11-22 18:40:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-22 18:40:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:22,805 INFO L225 Difference]: With dead ends: 359 [2024-11-22 18:40:22,806 INFO L226 Difference]: Without dead ends: 359 [2024-11-22 18:40:22,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:40:22,806 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 105 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:22,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 361 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-22 18:40:22,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 310. [2024-11-22 18:40:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 238 states have (on average 1.7142857142857142) internal successors, (408), 295 states have internal predecessors, (408), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 428 transitions. [2024-11-22 18:40:22,813 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 428 transitions. Word has length 15 [2024-11-22 18:40:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:22,813 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 428 transitions. [2024-11-22 18:40:22,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 428 transitions. [2024-11-22 18:40:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 18:40:22,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:22,814 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:22,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 18:40:22,814 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:22,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 688488293, now seen corresponding path program 1 times [2024-11-22 18:40:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102732268] [2024-11-22 18:40:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102732268] [2024-11-22 18:40:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102732268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:22,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:40:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571610580] [2024-11-22 18:40:22,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:22,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:40:22,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:40:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:40:22,847 INFO L87 Difference]: Start difference. First operand 310 states and 428 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:22,904 INFO L93 Difference]: Finished difference Result 307 states and 422 transitions. [2024-11-22 18:40:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:40:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-22 18:40:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:22,906 INFO L225 Difference]: With dead ends: 307 [2024-11-22 18:40:22,906 INFO L226 Difference]: Without dead ends: 307 [2024-11-22 18:40:22,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:40:22,907 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:22,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 230 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-22 18:40:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2024-11-22 18:40:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.6890756302521008) internal successors, (402), 292 states have internal predecessors, (402), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 422 transitions. [2024-11-22 18:40:22,914 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 422 transitions. Word has length 19 [2024-11-22 18:40:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:22,914 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 422 transitions. [2024-11-22 18:40:22,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 422 transitions. [2024-11-22 18:40:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 18:40:22,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:22,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:22,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 18:40:22,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:22,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash 688488294, now seen corresponding path program 1 times [2024-11-22 18:40:22,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:22,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072407221] [2024-11-22 18:40:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:22,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072407221] [2024-11-22 18:40:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072407221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:22,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:40:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121166338] [2024-11-22 18:40:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:22,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:22,988 INFO L87 Difference]: Start difference. First operand 307 states and 422 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,038 INFO L93 Difference]: Finished difference Result 310 states and 424 transitions. [2024-11-22 18:40:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-22 18:40:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,040 INFO L225 Difference]: With dead ends: 310 [2024-11-22 18:40:23,040 INFO L226 Difference]: Without dead ends: 310 [2024-11-22 18:40:23,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:23,040 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 244 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:40:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-22 18:40:23,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2024-11-22 18:40:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 242 states have (on average 1.6694214876033058) internal successors, (404), 295 states have internal predecessors, (404), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 424 transitions. [2024-11-22 18:40:23,045 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 424 transitions. Word has length 19 [2024-11-22 18:40:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:23,045 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 424 transitions. [2024-11-22 18:40:23,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 424 transitions. [2024-11-22 18:40:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:40:23,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:23,046 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:23,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 18:40:23,046 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:23,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:23,047 INFO L85 PathProgramCache]: Analyzing trace with hash -131699369, now seen corresponding path program 1 times [2024-11-22 18:40:23,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:23,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162188378] [2024-11-22 18:40:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:23,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:23,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:23,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162188378] [2024-11-22 18:40:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162188378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:23,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:23,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:40:23,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045734337] [2024-11-22 18:40:23,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:23,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:40:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:40:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:40:23,099 INFO L87 Difference]: Start difference. First operand 310 states and 424 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,125 INFO L93 Difference]: Finished difference Result 316 states and 430 transitions. [2024-11-22 18:40:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:40:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 18:40:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,126 INFO L225 Difference]: With dead ends: 316 [2024-11-22 18:40:23,126 INFO L226 Difference]: Without dead ends: 316 [2024-11-22 18:40:23,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:40:23,127 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 11 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 420 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:40:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-22 18:40:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2024-11-22 18:40:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 244 states have (on average 1.6639344262295082) internal successors, (406), 297 states have internal predecessors, (406), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:40:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 426 transitions. [2024-11-22 18:40:23,131 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 426 transitions. Word has length 20 [2024-11-22 18:40:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:23,132 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 426 transitions. [2024-11-22 18:40:23,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 426 transitions. [2024-11-22 18:40:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:40:23,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:23,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:23,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 18:40:23,133 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:23,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash -131643665, now seen corresponding path program 1 times [2024-11-22 18:40:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870208524] [2024-11-22 18:40:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:23,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870208524] [2024-11-22 18:40:23,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870208524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:23,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:23,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:40:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60578734] [2024-11-22 18:40:23,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:23,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:40:23,180 INFO L87 Difference]: Start difference. First operand 312 states and 426 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,220 INFO L93 Difference]: Finished difference Result 362 states and 490 transitions. [2024-11-22 18:40:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:40:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 18:40:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,221 INFO L225 Difference]: With dead ends: 362 [2024-11-22 18:40:23,221 INFO L226 Difference]: Without dead ends: 362 [2024-11-22 18:40:23,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:40:23,222 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 31 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 850 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:40:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-22 18:40:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2024-11-22 18:40:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 265 states have (on average 1.6264150943396227) internal successors, (431), 319 states have internal predecessors, (431), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 461 transitions. [2024-11-22 18:40:23,228 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 461 transitions. Word has length 20 [2024-11-22 18:40:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:23,228 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 461 transitions. [2024-11-22 18:40:23,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 461 transitions. [2024-11-22 18:40:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:40:23,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:23,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:23,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 18:40:23,229 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:23,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2560946, now seen corresponding path program 1 times [2024-11-22 18:40:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400679082] [2024-11-22 18:40:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:23,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:23,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400679082] [2024-11-22 18:40:23,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400679082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:23,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:40:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287953021] [2024-11-22 18:40:23,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:23,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:23,287 INFO L87 Difference]: Start difference. First operand 338 states and 461 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,346 INFO L93 Difference]: Finished difference Result 342 states and 465 transitions. [2024-11-22 18:40:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 18:40:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,349 INFO L225 Difference]: With dead ends: 342 [2024-11-22 18:40:23,349 INFO L226 Difference]: Without dead ends: 342 [2024-11-22 18:40:23,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:23,350 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 245 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-22 18:40:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2024-11-22 18:40:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 269 states have (on average 1.6171003717472119) internal successors, (435), 323 states have internal predecessors, (435), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 465 transitions. [2024-11-22 18:40:23,366 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 465 transitions. Word has length 20 [2024-11-22 18:40:23,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:23,367 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 465 transitions. [2024-11-22 18:40:23,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 465 transitions. [2024-11-22 18:40:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:40:23,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:23,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:23,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 18:40:23,368 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:23,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2559024, now seen corresponding path program 1 times [2024-11-22 18:40:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935959626] [2024-11-22 18:40:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:23,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:23,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935959626] [2024-11-22 18:40:23,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935959626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:23,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:23,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:40:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540244908] [2024-11-22 18:40:23,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:23,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:40:23,414 INFO L87 Difference]: Start difference. First operand 342 states and 465 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,457 INFO L93 Difference]: Finished difference Result 375 states and 504 transitions. [2024-11-22 18:40:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:40:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 18:40:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,459 INFO L225 Difference]: With dead ends: 375 [2024-11-22 18:40:23,459 INFO L226 Difference]: Without dead ends: 375 [2024-11-22 18:40:23,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:40:23,460 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 45 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 952 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:40:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-22 18:40:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 337. [2024-11-22 18:40:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 265 states have (on average 1.6113207547169812) internal successors, (427), 318 states have internal predecessors, (427), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 457 transitions. [2024-11-22 18:40:23,466 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 457 transitions. Word has length 20 [2024-11-22 18:40:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:23,466 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 457 transitions. [2024-11-22 18:40:23,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 457 transitions. [2024-11-22 18:40:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:40:23,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:23,467 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:23,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 18:40:23,467 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:23,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash 59872289, now seen corresponding path program 1 times [2024-11-22 18:40:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552749654] [2024-11-22 18:40:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552749654] [2024-11-22 18:40:23,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552749654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:23,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:23,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:40:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950231294] [2024-11-22 18:40:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:23,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:40:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:40:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:23,612 INFO L87 Difference]: Start difference. First operand 337 states and 457 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,843 INFO L93 Difference]: Finished difference Result 416 states and 525 transitions. [2024-11-22 18:40:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:40:23,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-22 18:40:23,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,844 INFO L225 Difference]: With dead ends: 416 [2024-11-22 18:40:23,844 INFO L226 Difference]: Without dead ends: 416 [2024-11-22 18:40:23,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:40:23,845 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 101 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 899 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-22 18:40:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 331. [2024-11-22 18:40:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 259 states have (on average 1.606177606177606) internal successors, (416), 312 states have internal predecessors, (416), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 446 transitions. [2024-11-22 18:40:23,851 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 446 transitions. Word has length 21 [2024-11-22 18:40:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:23,851 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 446 transitions. [2024-11-22 18:40:23,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 446 transitions. [2024-11-22 18:40:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:40:23,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:23,851 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:23,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 18:40:23,851 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:23,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash -79389329, now seen corresponding path program 1 times [2024-11-22 18:40:23,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:23,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689226648] [2024-11-22 18:40:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:23,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689226648] [2024-11-22 18:40:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689226648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:23,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:40:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450728358] [2024-11-22 18:40:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:23,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:40:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:40:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:23,926 INFO L87 Difference]: Start difference. First operand 331 states and 446 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:23,994 INFO L93 Difference]: Finished difference Result 334 states and 448 transitions. [2024-11-22 18:40:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:40:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-22 18:40:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:23,996 INFO L225 Difference]: With dead ends: 334 [2024-11-22 18:40:23,996 INFO L226 Difference]: Without dead ends: 334 [2024-11-22 18:40:23,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:40:23,996 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 7 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:23,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 340 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-22 18:40:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 324. [2024-11-22 18:40:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 253 states have (on average 1.6126482213438735) internal successors, (408), 305 states have internal predecessors, (408), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 438 transitions. [2024-11-22 18:40:24,003 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 438 transitions. Word has length 21 [2024-11-22 18:40:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:24,003 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 438 transitions. [2024-11-22 18:40:24,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 438 transitions. [2024-11-22 18:40:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 18:40:24,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:24,004 INFO L215 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] [2024-11-22 18:40:24,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 18:40:24,005 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:24,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:24,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1710334668, now seen corresponding path program 1 times [2024-11-22 18:40:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:24,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777821980] [2024-11-22 18:40:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:24,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:24,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777821980] [2024-11-22 18:40:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777821980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:24,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:24,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:40:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221369311] [2024-11-22 18:40:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:24,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:40:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:40:24,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:40:24,046 INFO L87 Difference]: Start difference. First operand 324 states and 438 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:24,144 INFO L93 Difference]: Finished difference Result 329 states and 437 transitions. [2024-11-22 18:40:24,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:40:24,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-22 18:40:24,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:24,146 INFO L225 Difference]: With dead ends: 329 [2024-11-22 18:40:24,146 INFO L226 Difference]: Without dead ends: 329 [2024-11-22 18:40:24,147 INFO L431 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 [2024-11-22 18:40:24,147 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 30 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:24,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 369 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-22 18:40:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 323. [2024-11-22 18:40:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 258 states have (on average 1.5465116279069768) internal successors, (399), 304 states have internal predecessors, (399), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 429 transitions. [2024-11-22 18:40:24,154 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 429 transitions. Word has length 23 [2024-11-22 18:40:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:24,154 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 429 transitions. [2024-11-22 18:40:24,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 429 transitions. [2024-11-22 18:40:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 18:40:24,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:24,155 INFO L215 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] [2024-11-22 18:40:24,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 18:40:24,155 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:24,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1710334669, now seen corresponding path program 1 times [2024-11-22 18:40:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899973441] [2024-11-22 18:40:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:24,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:24,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899973441] [2024-11-22 18:40:24,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899973441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:24,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:24,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:40:24,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85088611] [2024-11-22 18:40:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:24,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:40:24,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:40:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:24,278 INFO L87 Difference]: Start difference. First operand 323 states and 429 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:24,400 INFO L93 Difference]: Finished difference Result 247 states and 298 transitions. [2024-11-22 18:40:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:40:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-22 18:40:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:24,401 INFO L225 Difference]: With dead ends: 247 [2024-11-22 18:40:24,401 INFO L226 Difference]: Without dead ends: 247 [2024-11-22 18:40:24,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:40:24,401 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 46 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:24,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 884 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-22 18:40:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 225. [2024-11-22 18:40:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 168 states have (on average 1.5238095238095237) internal successors, (256), 212 states have internal predecessors, (256), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 18:40:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 274 transitions. [2024-11-22 18:40:24,405 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 274 transitions. Word has length 23 [2024-11-22 18:40:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:24,405 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 274 transitions. [2024-11-22 18:40:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 274 transitions. [2024-11-22 18:40:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 18:40:24,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:24,406 INFO L215 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] [2024-11-22 18:40:24,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 18:40:24,406 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:24,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2045900250, now seen corresponding path program 1 times [2024-11-22 18:40:24,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:24,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606093668] [2024-11-22 18:40:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:24,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:24,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:24,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606093668] [2024-11-22 18:40:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606093668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:24,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:40:24,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832040984] [2024-11-22 18:40:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:24,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:40:24,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:40:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:24,584 INFO L87 Difference]: Start difference. First operand 225 states and 274 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:24,721 INFO L93 Difference]: Finished difference Result 256 states and 308 transitions. [2024-11-22 18:40:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:40:24,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-22 18:40:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:24,722 INFO L225 Difference]: With dead ends: 256 [2024-11-22 18:40:24,722 INFO L226 Difference]: Without dead ends: 256 [2024-11-22 18:40:24,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:40:24,722 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 72 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:24,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 779 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-22 18:40:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 235. [2024-11-22 18:40:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 178 states have (on average 1.4943820224719102) internal successors, (266), 222 states have internal predecessors, (266), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 18:40:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 284 transitions. [2024-11-22 18:40:24,727 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 284 transitions. Word has length 24 [2024-11-22 18:40:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:24,728 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 284 transitions. [2024-11-22 18:40:24,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 284 transitions. [2024-11-22 18:40:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 18:40:24,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:24,728 INFO L215 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] [2024-11-22 18:40:24,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 18:40:24,729 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:24,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1535366073, now seen corresponding path program 1 times [2024-11-22 18:40:24,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:24,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498006111] [2024-11-22 18:40:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:24,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498006111] [2024-11-22 18:40:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498006111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:24,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:24,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:40:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704674661] [2024-11-22 18:40:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:24,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:40:24,790 INFO L87 Difference]: Start difference. First operand 235 states and 284 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:24,835 INFO L93 Difference]: Finished difference Result 259 states and 311 transitions. [2024-11-22 18:40:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:40:24,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-22 18:40:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:24,837 INFO L225 Difference]: With dead ends: 259 [2024-11-22 18:40:24,837 INFO L226 Difference]: Without dead ends: 259 [2024-11-22 18:40:24,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:40:24,837 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 20 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:24,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 892 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:40:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-22 18:40:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 235. [2024-11-22 18:40:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 178 states have (on average 1.4831460674157304) internal successors, (264), 222 states have internal predecessors, (264), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 18:40:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2024-11-22 18:40:24,841 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 24 [2024-11-22 18:40:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:24,842 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2024-11-22 18:40:24,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:24,842 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2024-11-22 18:40:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 18:40:24,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:24,842 INFO L215 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] [2024-11-22 18:40:24,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 18:40:24,843 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:24,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1674205682, now seen corresponding path program 1 times [2024-11-22 18:40:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29479723] [2024-11-22 18:40:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29479723] [2024-11-22 18:40:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29479723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:25,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:25,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:40:25,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569679792] [2024-11-22 18:40:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:25,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:40:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:40:25,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:25,057 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:25,234 INFO L93 Difference]: Finished difference Result 253 states and 301 transitions. [2024-11-22 18:40:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:40:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-22 18:40:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:25,236 INFO L225 Difference]: With dead ends: 253 [2024-11-22 18:40:25,236 INFO L226 Difference]: Without dead ends: 253 [2024-11-22 18:40:25,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:40:25,236 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 53 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:25,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 921 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-22 18:40:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 240. [2024-11-22 18:40:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 183 states have (on average 1.469945355191257) internal successors, (269), 227 states have internal predecessors, (269), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 18:40:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 287 transitions. [2024-11-22 18:40:25,245 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 287 transitions. Word has length 25 [2024-11-22 18:40:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:25,245 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 287 transitions. [2024-11-22 18:40:25,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 287 transitions. [2024-11-22 18:40:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-22 18:40:25,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:25,247 INFO L215 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] [2024-11-22 18:40:25,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 18:40:25,247 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:25,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -984725155, now seen corresponding path program 1 times [2024-11-22 18:40:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479627357] [2024-11-22 18:40:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:25,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479627357] [2024-11-22 18:40:25,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479627357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:25,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:25,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:40:25,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281915138] [2024-11-22 18:40:25,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:25,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:40:25,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:25,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:40:25,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:25,421 INFO L87 Difference]: Start difference. First operand 240 states and 287 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:25,677 INFO L93 Difference]: Finished difference Result 431 states and 519 transitions. [2024-11-22 18:40:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:40:25,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-22 18:40:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:25,678 INFO L225 Difference]: With dead ends: 431 [2024-11-22 18:40:25,678 INFO L226 Difference]: Without dead ends: 431 [2024-11-22 18:40:25,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:40:25,678 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 151 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:25,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 609 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:40:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-22 18:40:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 367. [2024-11-22 18:40:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 302 states have (on average 1.5033112582781456) internal successors, (454), 348 states have internal predecessors, (454), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 484 transitions. [2024-11-22 18:40:25,687 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 484 transitions. Word has length 26 [2024-11-22 18:40:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:25,687 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 484 transitions. [2024-11-22 18:40:25,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 484 transitions. [2024-11-22 18:40:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 18:40:25,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:25,687 INFO L215 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] [2024-11-22 18:40:25,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 18:40:25,688 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:25,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash -461708714, now seen corresponding path program 1 times [2024-11-22 18:40:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331267669] [2024-11-22 18:40:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:25,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:25,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331267669] [2024-11-22 18:40:25,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331267669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:25,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:25,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:40:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070864143] [2024-11-22 18:40:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:25,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:40:25,781 INFO L87 Difference]: Start difference. First operand 367 states and 484 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:25,891 INFO L93 Difference]: Finished difference Result 396 states and 514 transitions. [2024-11-22 18:40:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:40:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-22 18:40:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:25,893 INFO L225 Difference]: With dead ends: 396 [2024-11-22 18:40:25,893 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 18:40:25,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:40:25,893 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 172 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:25,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 569 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 18:40:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2024-11-22 18:40:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 324 states have (on average 1.4814814814814814) internal successors, (480), 369 states have internal predecessors, (480), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 510 transitions. [2024-11-22 18:40:25,900 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 510 transitions. Word has length 27 [2024-11-22 18:40:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:25,900 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 510 transitions. [2024-11-22 18:40:25,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 510 transitions. [2024-11-22 18:40:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 18:40:25,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:25,901 INFO L215 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] [2024-11-22 18:40:25,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 18:40:25,901 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:25,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:25,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1700919435, now seen corresponding path program 1 times [2024-11-22 18:40:25,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:25,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939963334] [2024-11-22 18:40:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:25,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:26,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939963334] [2024-11-22 18:40:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939963334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 18:40:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298376510] [2024-11-22 18:40:26,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:26,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:40:26,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:40:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:40:26,126 INFO L87 Difference]: Start difference. First operand 388 states and 510 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:26,488 INFO L93 Difference]: Finished difference Result 574 states and 736 transitions. [2024-11-22 18:40:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:40:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-22 18:40:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:26,490 INFO L225 Difference]: With dead ends: 574 [2024-11-22 18:40:26,490 INFO L226 Difference]: Without dead ends: 574 [2024-11-22 18:40:26,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:40:26,491 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 169 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:26,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1209 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:40:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-22 18:40:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 511. [2024-11-22 18:40:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 439 states have (on average 1.501138952164009) internal successors, (659), 486 states have internal predecessors, (659), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 17 states have call predecessors, (28), 14 states have call successors, (28) [2024-11-22 18:40:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 701 transitions. [2024-11-22 18:40:26,499 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 701 transitions. Word has length 27 [2024-11-22 18:40:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:26,499 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 701 transitions. [2024-11-22 18:40:26,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 701 transitions. [2024-11-22 18:40:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 18:40:26,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:26,500 INFO L215 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] [2024-11-22 18:40:26,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 18:40:26,500 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:26,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1188894914, now seen corresponding path program 1 times [2024-11-22 18:40:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123178404] [2024-11-22 18:40:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123178404] [2024-11-22 18:40:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123178404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:26,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:40:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752549200] [2024-11-22 18:40:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:26,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:40:26,599 INFO L87 Difference]: Start difference. First operand 511 states and 701 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:26,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:26,725 INFO L93 Difference]: Finished difference Result 528 states and 714 transitions. [2024-11-22 18:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:40:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-22 18:40:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:26,727 INFO L225 Difference]: With dead ends: 528 [2024-11-22 18:40:26,727 INFO L226 Difference]: Without dead ends: 528 [2024-11-22 18:40:26,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:40:26,727 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 149 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:26,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 694 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-22 18:40:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 520. [2024-11-22 18:40:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 449 states have (on average 1.487750556792873) internal successors, (668), 495 states have internal predecessors, (668), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 17 states have call predecessors, (28), 14 states have call successors, (28) [2024-11-22 18:40:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 710 transitions. [2024-11-22 18:40:26,736 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 710 transitions. Word has length 28 [2024-11-22 18:40:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:26,736 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 710 transitions. [2024-11-22 18:40:26,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 710 transitions. [2024-11-22 18:40:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 18:40:26,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:26,738 INFO L215 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] [2024-11-22 18:40:26,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 18:40:26,738 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:26,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:26,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1320441736, now seen corresponding path program 1 times [2024-11-22 18:40:26,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:26,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248805088] [2024-11-22 18:40:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:26,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:26,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248805088] [2024-11-22 18:40:26,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248805088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:26,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:26,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:40:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072276196] [2024-11-22 18:40:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:26,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:40:26,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:40:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:26,884 INFO L87 Difference]: Start difference. First operand 520 states and 710 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:27,014 INFO L93 Difference]: Finished difference Result 519 states and 690 transitions. [2024-11-22 18:40:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:40:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-22 18:40:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:27,016 INFO L225 Difference]: With dead ends: 519 [2024-11-22 18:40:27,016 INFO L226 Difference]: Without dead ends: 519 [2024-11-22 18:40:27,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:40:27,017 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 183 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:27,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 242 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-22 18:40:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 481. [2024-11-22 18:40:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 417 states have (on average 1.434052757793765) internal successors, (598), 456 states have internal predecessors, (598), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 17 states have call predecessors, (28), 14 states have call successors, (28) [2024-11-22 18:40:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 640 transitions. [2024-11-22 18:40:27,027 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 640 transitions. Word has length 29 [2024-11-22 18:40:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:27,028 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 640 transitions. [2024-11-22 18:40:27,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 640 transitions. [2024-11-22 18:40:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 18:40:27,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:27,028 INFO L215 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, 1, 1] [2024-11-22 18:40:27,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 18:40:27,028 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:27,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1684807341, now seen corresponding path program 1 times [2024-11-22 18:40:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635168365] [2024-11-22 18:40:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 18:40:27,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635168365] [2024-11-22 18:40:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635168365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:40:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132287999] [2024-11-22 18:40:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:27,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:40:27,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:40:27,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:40:27,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:40:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:27,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 18:40:27,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:40:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:27,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:40:27,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:40:27,743 INFO L378 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 19 treesize of output 23 [2024-11-22 18:40:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 18:40:27,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132287999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:40:27,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:40:27,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 22 [2024-11-22 18:40:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54769637] [2024-11-22 18:40:27,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:40:27,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 18:40:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 18:40:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:40:27,898 INFO L87 Difference]: Start difference. First operand 481 states and 640 transitions. Second operand has 23 states, 22 states have (on average 4.681818181818182) internal successors, (103), 20 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:40:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:28,181 INFO L93 Difference]: Finished difference Result 508 states and 664 transitions. [2024-11-22 18:40:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:40:28,182 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.681818181818182) internal successors, (103), 20 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2024-11-22 18:40:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:28,183 INFO L225 Difference]: With dead ends: 508 [2024-11-22 18:40:28,183 INFO L226 Difference]: Without dead ends: 508 [2024-11-22 18:40:28,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2024-11-22 18:40:28,184 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 573 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:28,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 789 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:40:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-22 18:40:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 379. [2024-11-22 18:40:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 324 states have (on average 1.3919753086419753) internal successors, (451), 360 states have internal predecessors, (451), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 481 transitions. [2024-11-22 18:40:28,189 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 481 transitions. Word has length 40 [2024-11-22 18:40:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:28,190 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 481 transitions. [2024-11-22 18:40:28,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.681818181818182) internal successors, (103), 20 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:40:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 481 transitions. [2024-11-22 18:40:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 18:40:28,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:28,190 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:28,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 18:40:28,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:40:28,394 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:28,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1517564365, now seen corresponding path program 1 times [2024-11-22 18:40:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811615715] [2024-11-22 18:40:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811615715] [2024-11-22 18:40:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811615715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:40:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125621798] [2024-11-22 18:40:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:28,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:40:28,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:40:28,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:40:28,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:40:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:28,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 18:40:28,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:40:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:28,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:40:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125621798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:28,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:40:28,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2024-11-22 18:40:28,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86198002] [2024-11-22 18:40:28,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:28,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:28,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:28,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-22 18:40:28,907 INFO L87 Difference]: Start difference. First operand 379 states and 481 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:29,006 INFO L93 Difference]: Finished difference Result 386 states and 488 transitions. [2024-11-22 18:40:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:40:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-22 18:40:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:29,008 INFO L225 Difference]: With dead ends: 386 [2024-11-22 18:40:29,008 INFO L226 Difference]: Without dead ends: 386 [2024-11-22 18:40:29,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:40:29,009 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 242 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:29,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 311 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-22 18:40:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 381. [2024-11-22 18:40:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 326 states have (on average 1.392638036809816) internal successors, (454), 362 states have internal predecessors, (454), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 484 transitions. [2024-11-22 18:40:29,015 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 484 transitions. Word has length 40 [2024-11-22 18:40:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:29,015 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 484 transitions. [2024-11-22 18:40:29,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 484 transitions. [2024-11-22 18:40:29,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 18:40:29,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:29,016 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:29,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 18:40:29,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-22 18:40:29,220 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:29,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1517564303, now seen corresponding path program 1 times [2024-11-22 18:40:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799045401] [2024-11-22 18:40:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799045401] [2024-11-22 18:40:29,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799045401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:40:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320253677] [2024-11-22 18:40:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:29,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:40:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:40:29,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:40:29,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:40:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:29,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 18:40:29,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:40:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:29,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:40:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320253677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:29,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:40:29,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2024-11-22 18:40:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097720106] [2024-11-22 18:40:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:29,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:40:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:40:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:40:29,631 INFO L87 Difference]: Start difference. First operand 381 states and 484 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:29,719 INFO L93 Difference]: Finished difference Result 385 states and 486 transitions. [2024-11-22 18:40:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:40:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-22 18:40:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:29,721 INFO L225 Difference]: With dead ends: 385 [2024-11-22 18:40:29,721 INFO L226 Difference]: Without dead ends: 385 [2024-11-22 18:40:29,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:40:29,721 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 155 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:29,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 242 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-22 18:40:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 378. [2024-11-22 18:40:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 324 states have (on average 1.3858024691358024) internal successors, (449), 359 states have internal predecessors, (449), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 479 transitions. [2024-11-22 18:40:29,728 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 479 transitions. Word has length 40 [2024-11-22 18:40:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:29,728 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 479 transitions. [2024-11-22 18:40:29,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 479 transitions. [2024-11-22 18:40:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-22 18:40:29,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:29,729 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:40:29,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 18:40:29,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:40:29,934 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:29,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:29,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1078522670, now seen corresponding path program 1 times [2024-11-22 18:40:29,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:29,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917003751] [2024-11-22 18:40:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 18:40:30,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:30,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917003751] [2024-11-22 18:40:30,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917003751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:30,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:30,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:40:30,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411500533] [2024-11-22 18:40:30,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:30,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:40:30,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:40:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:40:30,065 INFO L87 Difference]: Start difference. First operand 378 states and 479 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:40:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:30,174 INFO L93 Difference]: Finished difference Result 380 states and 475 transitions. [2024-11-22 18:40:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:40:30,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-22 18:40:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:30,175 INFO L225 Difference]: With dead ends: 380 [2024-11-22 18:40:30,175 INFO L226 Difference]: Without dead ends: 380 [2024-11-22 18:40:30,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:40:30,176 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 130 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:30,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 314 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-22 18:40:30,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2024-11-22 18:40:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 324 states have (on average 1.3611111111111112) internal successors, (441), 357 states have internal predecessors, (441), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 471 transitions. [2024-11-22 18:40:30,183 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 471 transitions. Word has length 42 [2024-11-22 18:40:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:30,183 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 471 transitions. [2024-11-22 18:40:30,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:40:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 471 transitions. [2024-11-22 18:40:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-22 18:40:30,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:30,184 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:30,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-22 18:40:30,184 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:30,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -934084823, now seen corresponding path program 1 times [2024-11-22 18:40:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87126260] [2024-11-22 18:40:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:30,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:30,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87126260] [2024-11-22 18:40:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87126260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:30,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 18:40:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378016718] [2024-11-22 18:40:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:30,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 18:40:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 18:40:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:40:30,813 INFO L87 Difference]: Start difference. First operand 376 states and 471 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:31,144 INFO L93 Difference]: Finished difference Result 394 states and 491 transitions. [2024-11-22 18:40:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 18:40:31,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-11-22 18:40:31,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:31,145 INFO L225 Difference]: With dead ends: 394 [2024-11-22 18:40:31,145 INFO L226 Difference]: Without dead ends: 394 [2024-11-22 18:40:31,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:40:31,146 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 49 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:31,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 630 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:40:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-22 18:40:31,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 390. [2024-11-22 18:40:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 338 states have (on average 1.3520710059171597) internal successors, (457), 371 states have internal predecessors, (457), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 487 transitions. [2024-11-22 18:40:31,152 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 487 transitions. Word has length 43 [2024-11-22 18:40:31,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:31,152 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 487 transitions. [2024-11-22 18:40:31,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 487 transitions. [2024-11-22 18:40:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 18:40:31,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:31,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:31,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-22 18:40:31,153 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:31,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1138243033, now seen corresponding path program 1 times [2024-11-22 18:40:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:31,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163785729] [2024-11-22 18:40:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163785729] [2024-11-22 18:40:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163785729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:40:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:40:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 18:40:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007067788] [2024-11-22 18:40:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:40:31,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 18:40:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:40:31,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 18:40:31,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:40:31,465 INFO L87 Difference]: Start difference. First operand 390 states and 487 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:40:31,614 INFO L93 Difference]: Finished difference Result 405 states and 500 transitions. [2024-11-22 18:40:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 18:40:31,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2024-11-22 18:40:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:40:31,616 INFO L225 Difference]: With dead ends: 405 [2024-11-22 18:40:31,616 INFO L226 Difference]: Without dead ends: 405 [2024-11-22 18:40:31,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:40:31,617 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 142 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:40:31,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1055 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:40:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-22 18:40:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 394. [2024-11-22 18:40:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 342 states have (on average 1.345029239766082) internal successors, (460), 375 states have internal predecessors, (460), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-22 18:40:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 490 transitions. [2024-11-22 18:40:31,623 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 490 transitions. Word has length 44 [2024-11-22 18:40:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:40:31,623 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 490 transitions. [2024-11-22 18:40:31,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:40:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 490 transitions. [2024-11-22 18:40:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 18:40:31,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:40:31,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:40:31,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-22 18:40:31,624 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:40:31,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:40:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1516678113, now seen corresponding path program 1 times [2024-11-22 18:40:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:40:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199029145] [2024-11-22 18:40:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:40:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:40:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199029145] [2024-11-22 18:40:32,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199029145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:40:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669301152] [2024-11-22 18:40:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:40:32,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:40:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:40:32,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:40:32,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:40:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:40:32,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-22 18:40:32,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:40:32,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 18:40:32,814 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2024-11-22 18:40:32,814 INFO L378 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 1 case distinctions, treesize of input 23 treesize of output 30 [2024-11-22 18:40:32,825 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2024-11-22 18:40:32,825 INFO L378 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 1 case distinctions, treesize of input 23 treesize of output 30 [2024-11-22 18:40:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:40:33,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:40:33,168 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-22 18:40:33,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 120 treesize of output 114 [2024-11-22 18:40:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:40:33,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:40:33,199 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-22 18:40:33,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 106 [2024-11-22 18:40:33,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:40:33,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 101 [2024-11-22 18:40:33,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:40:33,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 75 treesize of output 71 [2024-11-22 18:40:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:40:33,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:40:47,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:40:47,544 INFO L378 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 212 treesize of output 217 [2024-11-22 18:41:25,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669301152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:41:25,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:41:25,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2024-11-22 18:41:25,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513498111] [2024-11-22 18:41:25,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:41:25,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 18:41:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 18:41:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1462, Unknown=6, NotChecked=0, Total=1640 [2024-11-22 18:41:25,757 INFO L87 Difference]: Start difference. First operand 394 states and 490 transitions. Second operand has 29 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 28 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:41:30,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 18:41:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:34,696 INFO L93 Difference]: Finished difference Result 626 states and 757 transitions. [2024-11-22 18:41:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 18:41:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 28 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-22 18:41:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:34,698 INFO L225 Difference]: With dead ends: 626 [2024-11-22 18:41:34,698 INFO L226 Difference]: Without dead ends: 626 [2024-11-22 18:41:34,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=486, Invalid=4200, Unknown=6, NotChecked=0, Total=4692 [2024-11-22 18:41:34,699 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 388 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:34,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2114 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1578 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2024-11-22 18:41:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-22 18:41:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 454. [2024-11-22 18:41:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 395 states have (on average 1.3367088607594937) internal successors, (528), 431 states have internal predecessors, (528), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 15 states have call predecessors, (28), 14 states have call successors, (28) [2024-11-22 18:41:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 570 transitions. [2024-11-22 18:41:34,707 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 570 transitions. Word has length 44 [2024-11-22 18:41:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:34,707 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 570 transitions. [2024-11-22 18:41:34,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 28 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:41:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 570 transitions. [2024-11-22 18:41:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 18:41:34,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:34,708 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:34,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 18:41:34,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-22 18:41:34,912 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:41:34,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1516678114, now seen corresponding path program 1 times [2024-11-22 18:41:34,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:34,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660609191] [2024-11-22 18:41:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:34,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:41:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660609191] [2024-11-22 18:41:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660609191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:41:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314412534] [2024-11-22 18:41:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:35,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:35,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:35,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:41:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:35,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-22 18:41:35,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:36,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 18:41:36,449 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2024-11-22 18:41:36,450 INFO L378 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 1 case distinctions, treesize of input 23 treesize of output 30 [2024-11-22 18:41:36,462 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-22 18:41:36,462 INFO L378 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 1 case distinctions, treesize of input 23 treesize of output 22 [2024-11-22 18:41:36,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:41:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:41:36,798 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-22 18:41:36,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 80 [2024-11-22 18:41:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:41:36,819 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-22 18:41:36,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 85 [2024-11-22 18:41:37,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:41:37,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 83 treesize of output 79 [2024-11-22 18:41:37,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:41:37,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 65 [2024-11-22 18:41:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:41:37,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:41:50,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:41:50,971 INFO L378 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 339 treesize of output 344