./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-dietlibc/dirname-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/termination-dietlibc/dirname-2.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', 'c17dc684f0856c2cb34d9c0f310a5ac71ddc07f596d7c8c46ee2d12464efc754'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-dietlibc/dirname-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c17dc684f0856c2cb34d9c0f310a5ac71ddc07f596d7c8c46ee2d12464efc754 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:19:01,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:19:02,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-07 16:19:02,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:19:02,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:19:02,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:19:02,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:19:02,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:19:02,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:19:02,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:19:02,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:19:02,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:19:02,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:19:02,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:19:02,066 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:19:02,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:19:02,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:19:02,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:19:02,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:19:02,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:19:02,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:19:02,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:19:02,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:19:02,068 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c17dc684f0856c2cb34d9c0f310a5ac71ddc07f596d7c8c46ee2d12464efc754 [2024-11-07 16:19:02,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:19:02,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:19:02,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:19:02,405 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:19:02,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:19:02,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-dietlibc/dirname-2.i [2024-11-07 16:19:03,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:19:04,017 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:19:04,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/dirname-2.i [2024-11-07 16:19:04,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/83c6a9bc2/dcd0b74c5dc74b4fb039c857947c4cac/FLAG4ce634825 [2024-11-07 16:19:04,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/83c6a9bc2/dcd0b74c5dc74b4fb039c857947c4cac [2024-11-07 16:19:04,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:19:04,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:19:04,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:19:04,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:19:04,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:19:04,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62649647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04, skipping insertion in model container [2024-11-07 16:19:04,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,072 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:19:04,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:19:04,275 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:19:04,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:19:04,337 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:19:04,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04 WrapperNode [2024-11-07 16:19:04,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:19:04,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:19:04,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:19:04,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:19:04,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,370 INFO L138 Inliner]: procedures = 114, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2024-11-07 16:19:04,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:19:04,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:19:04,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:19:04,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:19:04,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,392 INFO L175 MemorySlicer]: Split 9 memory accesses to 1 slices as follows [9]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2024-11-07 16:19:04,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:19:04,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:19:04,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:19:04,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:19:04,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (1/1) ... [2024-11-07 16:19:04,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:19:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:19:04,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 16:19:04,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 16:19:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 16:19:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 16:19:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 16:19:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:19:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:19:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:19:04,539 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:19:04,540 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:19:04,680 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-07 16:19:04,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:19:04,687 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:19:04,687 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 16:19:04,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:19:04 BoogieIcfgContainer [2024-11-07 16:19:04,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:19:04,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:19:04,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:19:04,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:19:04,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:19:04" (1/3) ... [2024-11-07 16:19:04,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16400fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:19:04, skipping insertion in model container [2024-11-07 16:19:04,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:04" (2/3) ... [2024-11-07 16:19:04,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16400fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:19:04, skipping insertion in model container [2024-11-07 16:19:04,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:19:04" (3/3) ... [2024-11-07 16:19:04,695 INFO L112 eAbstractionObserver]: Analyzing ICFG dirname-2.i [2024-11-07 16:19:04,706 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:19:04,706 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-11-07 16:19:04,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:19:04,742 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;@664649c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:19:04,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-07 16:19:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 27 states have (on average 2.185185185185185) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-07 16:19:04,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:04,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-07 16:19:04,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:04,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash 925709, now seen corresponding path program 1 times [2024-11-07 16:19:04,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896510814] [2024-11-07 16:19:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896510814] [2024-11-07 16:19:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896510814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:04,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:04,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:19:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476886030] [2024-11-07 16:19:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:04,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:19:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:19:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:19:04,903 INFO L87 Difference]: Start difference. First operand has 47 states, 27 states have (on average 2.185185185185185) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:04,946 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-07 16:19:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:19:04,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-07 16:19:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:04,953 INFO L225 Difference]: With dead ends: 48 [2024-11-07 16:19:04,953 INFO L226 Difference]: Without dead ends: 45 [2024-11-07 16:19:04,955 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 [2024-11-07 16:19:04,957 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:04,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-07 16:19:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-07 16:19:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 2.0) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-07 16:19:04,987 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 4 [2024-11-07 16:19:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:04,988 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-07 16:19:04,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-07 16:19:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-07 16:19:04,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:04,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-07 16:19:04,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:19:04,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:04,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:04,989 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-11-07 16:19:04,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691271360] [2024-11-07 16:19:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691271360] [2024-11-07 16:19:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691271360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:05,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:05,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:19:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850175734] [2024-11-07 16:19:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:05,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:19:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:19:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:19:05,044 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:05,084 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-11-07 16:19:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:19:05,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-07 16:19:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:05,084 INFO L225 Difference]: With dead ends: 44 [2024-11-07 16:19:05,085 INFO L226 Difference]: Without dead ends: 44 [2024-11-07 16:19:05,085 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 [2024-11-07 16:19:05,085 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:05,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-07 16:19:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-07 16:19:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-07 16:19:05,092 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 4 [2024-11-07 16:19:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:05,092 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-07 16:19:05,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-07 16:19:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-07 16:19:05,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:05,093 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-07 16:19:05,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:19:05,093 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:05,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2024-11-07 16:19:05,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:05,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339702182] [2024-11-07 16:19:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:05,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:05,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:05,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339702182] [2024-11-07 16:19:05,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339702182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:05,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:05,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:19:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439369285] [2024-11-07 16:19:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:05,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:19:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:19:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:19:05,259 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:05,300 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-07 16:19:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:19:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-07 16:19:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:05,301 INFO L225 Difference]: With dead ends: 43 [2024-11-07 16:19:05,301 INFO L226 Difference]: Without dead ends: 43 [2024-11-07 16:19:05,301 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 [2024-11-07 16:19:05,301 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:05,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-07 16:19:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-07 16:19:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-11-07 16:19:05,307 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 4 [2024-11-07 16:19:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:05,308 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-11-07 16:19:05,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-11-07 16:19:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:19:05,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:05,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:05,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:19:05,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:05,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:05,309 INFO L85 PathProgramCache]: Analyzing trace with hash 175688846, now seen corresponding path program 1 times [2024-11-07 16:19:05,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:05,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018228774] [2024-11-07 16:19:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:05,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018228774] [2024-11-07 16:19:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018228774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:05,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:19:05,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170811963] [2024-11-07 16:19:05,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:05,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:19:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:19:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:19:05,399 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:05,491 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-07 16:19:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:19:05,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:19:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:05,492 INFO L225 Difference]: With dead ends: 41 [2024-11-07 16:19:05,492 INFO L226 Difference]: Without dead ends: 41 [2024-11-07 16:19:05,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:19:05,493 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:05,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 32 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:19:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-07 16:19:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-07 16:19:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-07 16:19:05,495 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 8 [2024-11-07 16:19:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:05,495 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-07 16:19:05,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-07 16:19:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:19:05,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:05,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:05,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:19:05,496 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:05,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 175688847, now seen corresponding path program 1 times [2024-11-07 16:19:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284828918] [2024-11-07 16:19:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284828918] [2024-11-07 16:19:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284828918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:05,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:05,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:19:05,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842965232] [2024-11-07 16:19:05,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:05,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:19:05,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:19:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:19:05,721 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:05,814 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-11-07 16:19:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:19:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:19:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:05,815 INFO L225 Difference]: With dead ends: 46 [2024-11-07 16:19:05,815 INFO L226 Difference]: Without dead ends: 46 [2024-11-07 16:19:05,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:19:05,815 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:05,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 61 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:19:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-07 16:19:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-11-07 16:19:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-07 16:19:05,818 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 8 [2024-11-07 16:19:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:05,818 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-07 16:19:05,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-07 16:19:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:19:05,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:05,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:05,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 16:19:05,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:05,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash 175689769, now seen corresponding path program 1 times [2024-11-07 16:19:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543678832] [2024-11-07 16:19:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543678832] [2024-11-07 16:19:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543678832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:05,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:19:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641799211] [2024-11-07 16:19:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:05,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:19:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:19:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:19:05,871 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:05,910 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-11-07 16:19:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:19:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:19:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:05,911 INFO L225 Difference]: With dead ends: 44 [2024-11-07 16:19:05,911 INFO L226 Difference]: Without dead ends: 44 [2024-11-07 16:19:05,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:19:05,912 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 37 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:05,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 64 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-07 16:19:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-07 16:19:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-11-07 16:19:05,919 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 8 [2024-11-07 16:19:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:05,919 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-11-07 16:19:05,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-11-07 16:19:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-07 16:19:05,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:05,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:05,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 16:19:05,920 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:05,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1359179171, now seen corresponding path program 1 times [2024-11-07 16:19:05,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:05,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800826531] [2024-11-07 16:19:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:06,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:06,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800826531] [2024-11-07 16:19:06,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800826531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:19:06,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167775826] [2024-11-07 16:19:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:06,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:06,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:19:06,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:19:06,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 16:19:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:06,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:19:06,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:19:06,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:19:06,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:19:06,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-07 16:19:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:06,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:19:07,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-07 16:19:07,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-07 16:19:07,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-07 16:19:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167775826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:19:07,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:19:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-11-07 16:19:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551870605] [2024-11-07 16:19:07,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:19:07,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:19:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:19:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:19:07,072 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:07,588 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-11-07 16:19:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:19:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-07 16:19:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:07,589 INFO L225 Difference]: With dead ends: 50 [2024-11-07 16:19:07,589 INFO L226 Difference]: Without dead ends: 50 [2024-11-07 16:19:07,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:19:07,590 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:07,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 199 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:19:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-07 16:19:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-11-07 16:19:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2024-11-07 16:19:07,597 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 12 [2024-11-07 16:19:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:07,597 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2024-11-07 16:19:07,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2024-11-07 16:19:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-07 16:19:07,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:07,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:07,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 16:19:07,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:07,798 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:07,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash 501085626, now seen corresponding path program 1 times [2024-11-07 16:19:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852516246] [2024-11-07 16:19:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:07,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:07,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852516246] [2024-11-07 16:19:07,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852516246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:07,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:07,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:19:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512499177] [2024-11-07 16:19:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:07,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:19:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:19:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:19:07,892 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:07,972 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2024-11-07 16:19:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:19:07,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-07 16:19:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:07,973 INFO L225 Difference]: With dead ends: 53 [2024-11-07 16:19:07,973 INFO L226 Difference]: Without dead ends: 53 [2024-11-07 16:19:07,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:19:07,973 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:07,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:19:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-07 16:19:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-07 16:19:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 51 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2024-11-07 16:19:07,976 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 14 [2024-11-07 16:19:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:07,976 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2024-11-07 16:19:07,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2024-11-07 16:19:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-07 16:19:07,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:07,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:07,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 16:19:07,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:07,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash 501085627, now seen corresponding path program 1 times [2024-11-07 16:19:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535742272] [2024-11-07 16:19:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:08,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535742272] [2024-11-07 16:19:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535742272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:08,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:19:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007254400] [2024-11-07 16:19:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:08,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:19:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:19:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:19:08,085 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:08,126 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2024-11-07 16:19:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:19:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-07 16:19:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:08,127 INFO L225 Difference]: With dead ends: 54 [2024-11-07 16:19:08,127 INFO L226 Difference]: Without dead ends: 54 [2024-11-07 16:19:08,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:19:08,128 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 138 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 [2024-11-07 16:19:08,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 138 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-07 16:19:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-07 16:19:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.558139534883721) internal successors, (67), 53 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-11-07 16:19:08,131 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 14 [2024-11-07 16:19:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:08,131 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-11-07 16:19:08,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-11-07 16:19:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-07 16:19:08,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:08,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:08,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:19:08,132 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:08,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash 558343928, now seen corresponding path program 1 times [2024-11-07 16:19:08,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:08,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527861123] [2024-11-07 16:19:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:08,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:08,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:08,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527861123] [2024-11-07 16:19:08,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527861123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:08,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:08,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:19:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136594775] [2024-11-07 16:19:08,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:08,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:19:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:19:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:19:08,181 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:08,204 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-07 16:19:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:19:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-07 16:19:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:08,204 INFO L225 Difference]: With dead ends: 53 [2024-11-07 16:19:08,204 INFO L226 Difference]: Without dead ends: 53 [2024-11-07 16:19:08,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:19:08,205 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:08,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 145 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-07 16:19:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-07 16:19:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.5) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2024-11-07 16:19:08,207 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 14 [2024-11-07 16:19:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:08,207 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2024-11-07 16:19:08,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2024-11-07 16:19:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-07 16:19:08,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:08,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:08,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:19:08,208 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:08,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 128792540, now seen corresponding path program 1 times [2024-11-07 16:19:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:08,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242877744] [2024-11-07 16:19:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:08,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242877744] [2024-11-07 16:19:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242877744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:19:08,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:19:08,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:19:08,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565462559] [2024-11-07 16:19:08,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:19:08,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:19:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:19:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:19:08,293 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:08,313 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-07 16:19:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:19:08,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-07 16:19:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:08,313 INFO L225 Difference]: With dead ends: 51 [2024-11-07 16:19:08,314 INFO L226 Difference]: Without dead ends: 46 [2024-11-07 16:19:08,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:19:08,314 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:08,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 54 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:19:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-07 16:19:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-07 16:19:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-07 16:19:08,318 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 15 [2024-11-07 16:19:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:08,318 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-07 16:19:08,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-07 16:19:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 16:19:08,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:08,319 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:08,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 16:19:08,319 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:08,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 544171191, now seen corresponding path program 2 times [2024-11-07 16:19:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650696525] [2024-11-07 16:19:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:08,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:08,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650696525] [2024-11-07 16:19:08,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650696525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:19:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156684686] [2024-11-07 16:19:08,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:19:08,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:19:08,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:19:08,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 16:19:08,844 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:19:08,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:19:08,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-07 16:19:08,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:19:08,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:19:10,672 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-07 16:19:10,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 26 [2024-11-07 16:19:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:10,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:19:11,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-07 16:19:11,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2024-11-07 16:19:11,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2024-11-07 16:19:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156684686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:19:11,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:19:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-07 16:19:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425558838] [2024-11-07 16:19:11,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:19:11,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 16:19:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 16:19:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=952, Unknown=1, NotChecked=0, Total=1056 [2024-11-07 16:19:11,199 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:13,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:19:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:16,160 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2024-11-07 16:19:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-07 16:19:16,161 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-07 16:19:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:16,162 INFO L225 Difference]: With dead ends: 83 [2024-11-07 16:19:16,162 INFO L226 Difference]: Without dead ends: 83 [2024-11-07 16:19:16,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=570, Invalid=2967, Unknown=3, NotChecked=0, Total=3540 [2024-11-07 16:19:16,164 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 244 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:16,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 140 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 985 Invalid, 3 Unknown, 0 Unchecked, 2.4s Time] [2024-11-07 16:19:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-07 16:19:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2024-11-07 16:19:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-11-07 16:19:16,167 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 16 [2024-11-07 16:19:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:16,167 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-11-07 16:19:16,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-11-07 16:19:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 16:19:16,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:16,168 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:16,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 16:19:16,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:16,368 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:16,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:16,369 INFO L85 PathProgramCache]: Analyzing trace with hash 544230773, now seen corresponding path program 1 times [2024-11-07 16:19:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944509159] [2024-11-07 16:19:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:16,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944509159] [2024-11-07 16:19:16,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944509159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:19:16,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581550623] [2024-11-07 16:19:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:16,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:19:16,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:19:16,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 16:19:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:16,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-07 16:19:16,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:19:16,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:19:17,244 INFO L349 Elim1Store]: treesize reduction 4, result has 82.6 percent of original size [2024-11-07 16:19:17,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 52 [2024-11-07 16:19:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:17,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:19:17,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 156 [2024-11-07 16:19:17,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:19:17,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 309 treesize of output 304 [2024-11-07 16:19:17,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2024-11-07 16:19:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581550623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:19:18,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:19:18,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2024-11-07 16:19:18,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214659011] [2024-11-07 16:19:18,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:19:18,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 16:19:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 16:19:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2024-11-07 16:19:18,236 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:21,101 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2024-11-07 16:19:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-07 16:19:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-07 16:19:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:21,102 INFO L225 Difference]: With dead ends: 99 [2024-11-07 16:19:21,102 INFO L226 Difference]: Without dead ends: 99 [2024-11-07 16:19:21,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=685, Invalid=2854, Unknown=1, NotChecked=0, Total=3540 [2024-11-07 16:19:21,104 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 246 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:21,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 128 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 16:19:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-07 16:19:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2024-11-07 16:19:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2024-11-07 16:19:21,110 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 16 [2024-11-07 16:19:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:21,110 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2024-11-07 16:19:21,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2024-11-07 16:19:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-07 16:19:21,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:21,110 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:21,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 16:19:21,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:21,311 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:21,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash -980276979, now seen corresponding path program 1 times [2024-11-07 16:19:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:21,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452135975] [2024-11-07 16:19:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:21,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452135975] [2024-11-07 16:19:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452135975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:19:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926371321] [2024-11-07 16:19:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:21,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:21,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:19:21,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:19:21,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 16:19:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:21,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 16:19:21,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:19:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:21,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:19:21,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:19:21,748 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 21 treesize of output 25 [2024-11-07 16:19:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:21,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926371321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:19:21,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:19:21,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-07 16:19:21,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729227845] [2024-11-07 16:19:21,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:19:21,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 16:19:21,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 16:19:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-07 16:19:21,819 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:19:22,132 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2024-11-07 16:19:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:19:22,133 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-07 16:19:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:19:22,133 INFO L225 Difference]: With dead ends: 97 [2024-11-07 16:19:22,133 INFO L226 Difference]: Without dead ends: 97 [2024-11-07 16:19:22,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 16:19:22,135 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 112 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:19:22,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 63 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:19:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-07 16:19:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2024-11-07 16:19:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 72 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2024-11-07 16:19:22,141 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 18 [2024-11-07 16:19:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:19:22,142 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2024-11-07 16:19:22,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2024-11-07 16:19:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 16:19:22,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:19:22,142 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:19:22,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 16:19:22,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 16:19:22,343 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:19:22,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:19:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -343606135, now seen corresponding path program 2 times [2024-11-07 16:19:22,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:19:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140501771] [2024-11-07 16:19:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:19:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:19:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:19:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:19:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140501771] [2024-11-07 16:19:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140501771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:19:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145710283] [2024-11-07 16:19:22,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:19:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:19:22,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:19:22,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:19:22,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 16:19:22,760 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:19:22,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:19:22,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-07 16:19:22,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:19:22,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:19:45,712 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-07 16:19:45,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 30 [2024-11-07 16:19:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:45,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:19:46,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-07 16:19:46,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-11-07 16:19:46,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2024-11-07 16:19:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:19:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145710283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:19:46,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:19:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 40 [2024-11-07 16:19:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995002023] [2024-11-07 16:19:46,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:19:46,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-07 16:19:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:19:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-07 16:19:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1430, Unknown=12, NotChecked=0, Total=1640 [2024-11-07 16:19:46,341 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 41 states, 40 states have (on average 1.375) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:19:51,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:20:00,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:20:04,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:20:13,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:20:18,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:20:35,224 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]