./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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/list-ext3-properties/sll_length_check-1.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-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-memcleanup) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936'] 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/list-ext3-properties/sll_length_check-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 15:54:21,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 15:54:22,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-11-07 15:54:22,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 15:54:22,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 15:54:22,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 15:54:22,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 15:54:22,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 15:54:22,032 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 15:54:22,032 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 15:54:22,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 15:54:22,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 15:54:22,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 15:54:22,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 15:54:22,033 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 15:54:22,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 15:54:22,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 15:54:22,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 15:54:22,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 15:54:22,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 15:54:22,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 15:54:22,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 15:54:22,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 15:54:22,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 15:54:22,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 15:54:22,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 15:54:22,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:54:22,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 15:54:22,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 15:54:22,037 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-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936 [2024-11-07 15:54:22,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 15:54:22,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 15:54:22,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 15:54:22,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 15:54:22,252 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 15:54:22,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2024-11-07 15:54:23,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 15:54:23,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 15:54:23,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2024-11-07 15:54:23,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bed99467c/06d17c16341a4365b79f2840686b8e7e/FLAGfce65b634 [2024-11-07 15:54:23,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bed99467c/06d17c16341a4365b79f2840686b8e7e [2024-11-07 15:54:23,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 15:54:23,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 15:54:23,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 15:54:23,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 15:54:23,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 15:54:23,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:23" (1/1) ... [2024-11-07 15:54:23,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfd1a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:23, skipping insertion in model container [2024-11-07 15:54:23,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:23" (1/1) ... [2024-11-07 15:54:23,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 15:54:24,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:54:24,108 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 15:54:24,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:54:24,153 INFO L204 MainTranslator]: Completed translation [2024-11-07 15:54:24,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24 WrapperNode [2024-11-07 15:54:24,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 15:54:24,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 15:54:24,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 15:54:24,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 15:54:24,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,177 INFO L138 Inliner]: procedures = 125, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 91 [2024-11-07 15:54:24,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 15:54:24,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 15:54:24,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 15:54:24,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 15:54:24,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,198 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-07 15:54:24,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 15:54:24,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 15:54:24,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 15:54:24,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 15:54:24,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (1/1) ... [2024-11-07 15:54:24,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:54:24,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:54:24,247 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 15:54:24,249 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 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 15:54:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 15:54:24,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 15:54:24,359 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 15:54:24,361 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 15:54:24,472 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-07 15:54:24,472 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 15:54:24,481 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 15:54:24,481 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 15:54:24,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:24 BoogieIcfgContainer [2024-11-07 15:54:24,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 15:54:24,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 15:54:24,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 15:54:24,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 15:54:24,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:54:23" (1/3) ... [2024-11-07 15:54:24,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe71ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:54:24, skipping insertion in model container [2024-11-07 15:54:24,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:24" (2/3) ... [2024-11-07 15:54:24,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe71ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:54:24, skipping insertion in model container [2024-11-07 15:54:24,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:24" (3/3) ... [2024-11-07 15:54:24,489 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2024-11-07 15:54:24,499 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 15:54:24,499 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 15:54:24,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:54:24,533 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;@f76952d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:54:24,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-07 15:54:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-07 15:54:24,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:24,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:24,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:24,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 191473988, now seen corresponding path program 1 times [2024-11-07 15:54:24,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:24,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744047292] [2024-11-07 15:54:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:24,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:24,635 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 15:54:24,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:24,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744047292] [2024-11-07 15:54:24,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744047292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:54:24,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:54:24,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 15:54:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037173572] [2024-11-07 15:54:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:54:24,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 15:54:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 15:54:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 15:54:24,671 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 15:54:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:24,679 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2024-11-07 15:54:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 15:54:24,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 15:54:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:24,683 INFO L225 Difference]: With dead ends: 26 [2024-11-07 15:54:24,683 INFO L226 Difference]: Without dead ends: 23 [2024-11-07 15:54:24,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 15:54:24,687 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:24,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-07 15:54:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-07 15:54:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-07 15:54:24,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2024-11-07 15:54:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:24,708 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-07 15:54:24,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 15:54:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-07 15:54:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 15:54:24,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:24,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:24,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 15:54:24,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:24,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash -991967753, now seen corresponding path program 1 times [2024-11-07 15:54:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:24,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163989073] [2024-11-07 15:54:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:24,931 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 15:54:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163989073] [2024-11-07 15:54:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163989073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:54:24,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:54:24,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 15:54:24,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291662684] [2024-11-07 15:54:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:54:24,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:54:24,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:24,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:54:24,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:54:24,932 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:24,971 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-11-07 15:54:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:54:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-07 15:54:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:24,972 INFO L225 Difference]: With dead ends: 40 [2024-11-07 15:54:24,972 INFO L226 Difference]: Without dead ends: 40 [2024-11-07 15:54:24,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:54:24,973 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 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 15:54:24,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-07 15:54:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-11-07 15:54:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 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 15:54:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-07 15:54:24,975 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 16 [2024-11-07 15:54:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:24,976 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-07 15:54:24,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-07 15:54:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 15:54:24,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:24,976 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:24,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 15:54:24,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:24,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash -992019435, now seen corresponding path program 1 times [2024-11-07 15:54:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:24,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309263922] [2024-11-07 15:54:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:24,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,074 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 15:54:25,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309263922] [2024-11-07 15:54:25,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309263922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:54:25,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:54:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 15:54:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257883926] [2024-11-07 15:54:25,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:54:25,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 15:54:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 15:54:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 15:54:25,076 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:25,104 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-07 15:54:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 15:54:25,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-07 15:54:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:25,106 INFO L225 Difference]: With dead ends: 43 [2024-11-07 15:54:25,106 INFO L226 Difference]: Without dead ends: 43 [2024-11-07 15:54:25,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 15:54:25,107 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:25,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-07 15:54:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2024-11-07 15:54:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 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 15:54:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-07 15:54:25,112 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2024-11-07 15:54:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:25,113 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-07 15:54:25,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-07 15:54:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-07 15:54:25,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:25,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:25,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 15:54:25,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:25,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:25,114 INFO L85 PathProgramCache]: Analyzing trace with hash 617811326, now seen corresponding path program 1 times [2024-11-07 15:54:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:25,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158485562] [2024-11-07 15:54:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:25,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:54:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158485562] [2024-11-07 15:54:25,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158485562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:54:25,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:54:25,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 15:54:25,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825939536] [2024-11-07 15:54:25,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:54:25,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 15:54:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 15:54:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:54:25,215 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:25,263 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2024-11-07 15:54:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 15:54:25,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-07 15:54:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:25,265 INFO L225 Difference]: With dead ends: 42 [2024-11-07 15:54:25,265 INFO L226 Difference]: Without dead ends: 42 [2024-11-07 15:54:25,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 15:54:25,266 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:25,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 107 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-07 15:54:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-11-07 15:54:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 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 15:54:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-07 15:54:25,268 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2024-11-07 15:54:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:25,268 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-07 15:54:25,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-07 15:54:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-07 15:54:25,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:25,268 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:25,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 15:54:25,269 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:25,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2029395104, now seen corresponding path program 1 times [2024-11-07 15:54:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:25,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405594948] [2024-11-07 15:54:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:25,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 15:54:25,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:25,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405594948] [2024-11-07 15:54:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405594948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:54:25,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:54:25,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 15:54:25,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121368167] [2024-11-07 15:54:25,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:54:25,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:54:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:54:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:54:25,294 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:25,301 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-07 15:54:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:54:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-07 15:54:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:25,302 INFO L225 Difference]: With dead ends: 43 [2024-11-07 15:54:25,302 INFO L226 Difference]: Without dead ends: 41 [2024-11-07 15:54:25,302 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 15:54:25,302 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:25,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-07 15:54:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-11-07 15:54:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 0 states have call successors, (0), 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 15:54:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2024-11-07 15:54:25,304 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 19 [2024-11-07 15:54:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:25,305 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2024-11-07 15:54:25,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 15:54:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-07 15:54:25,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-07 15:54:25,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:25,305 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:25,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 15:54:25,305 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:25,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2029446786, now seen corresponding path program 1 times [2024-11-07 15:54:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:25,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205986620] [2024-11-07 15:54:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:54:25,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205986620] [2024-11-07 15:54:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205986620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:54:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415753820] [2024-11-07 15:54:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:25,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:25,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:54:25,392 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 15:54:25,394 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 15:54:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 15:54:25,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:54:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:54:25,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 15:54:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415753820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:54:25,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 15:54:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-07 15:54:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137359309] [2024-11-07 15:54:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:54:25,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 15:54:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 15:54:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:54:25,510 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:25,552 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-11-07 15:54:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 15:54:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-07 15:54:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:25,554 INFO L225 Difference]: With dead ends: 42 [2024-11-07 15:54:25,554 INFO L226 Difference]: Without dead ends: 42 [2024-11-07 15:54:25,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 15:54:25,554 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:25,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 81 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-07 15:54:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2024-11-07 15:54:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 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 15:54:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-07 15:54:25,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 19 [2024-11-07 15:54:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:25,556 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-07 15:54:25,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-07 15:54:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 15:54:25,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:25,557 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:25,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 15:54:25,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:25,762 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:25,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 72392126, now seen corresponding path program 1 times [2024-11-07 15:54:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809670921] [2024-11-07 15:54:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:25,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:54:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809670921] [2024-11-07 15:54:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809670921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:54:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154906350] [2024-11-07 15:54:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:25,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:25,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:54:25,877 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 15:54:25,878 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 15:54:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:25,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 15:54:25,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:54:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:25,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:54:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154906350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:54:26,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:54:26,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-07 15:54:26,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840553958] [2024-11-07 15:54:26,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:54:26,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 15:54:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 15:54:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-07 15:54:26,015 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 15:54:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:26,173 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-07 15:54:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 15:54:26,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-07 15:54:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:26,174 INFO L225 Difference]: With dead ends: 32 [2024-11-07 15:54:26,174 INFO L226 Difference]: Without dead ends: 32 [2024-11-07 15:54:26,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-11-07 15:54:26,175 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:26,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 141 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 15:54:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-07 15:54:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-07 15:54:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 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 15:54:26,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-07 15:54:26,176 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2024-11-07 15:54:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:26,176 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-07 15:54:26,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 15:54:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-07 15:54:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-07 15:54:26,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:26,177 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:26,192 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 15:54:26,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:26,384 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:26,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1417494332, now seen corresponding path program 1 times [2024-11-07 15:54:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67180055] [2024-11-07 15:54:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:26,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:26,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67180055] [2024-11-07 15:54:26,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67180055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:54:26,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91105084] [2024-11-07 15:54:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:26,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:26,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:54:26,568 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 15:54:26,569 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 15:54:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:26,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 15:54:26,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:54:26,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 15:54:26,756 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 16 treesize of output 8 [2024-11-07 15:54:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:26,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:54:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91105084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:54:26,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:54:26,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 12 [2024-11-07 15:54:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852615990] [2024-11-07 15:54:26,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:54:26,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 15:54:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 15:54:26,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-07 15:54:26,785 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:26,855 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-07 15:54:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 15:54:26,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-07 15:54:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:26,856 INFO L225 Difference]: With dead ends: 33 [2024-11-07 15:54:26,856 INFO L226 Difference]: Without dead ends: 33 [2024-11-07 15:54:26,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-07 15:54:26,859 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:26,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 169 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-07 15:54:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-07 15:54:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-07 15:54:26,861 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2024-11-07 15:54:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:26,861 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-07 15:54:26,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 15:54:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-07 15:54:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 15:54:26,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:26,862 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:26,877 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 15:54:27,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:27,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:27,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash -907290146, now seen corresponding path program 2 times [2024-11-07 15:54:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552495366] [2024-11-07 15:54:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 15:54:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552495366] [2024-11-07 15:54:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552495366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:54:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410612744] [2024-11-07 15:54:27,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 15:54:27,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:27,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:54:27,190 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 15:54:27,191 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 15:54:27,255 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 15:54:27,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 15:54:27,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 15:54:27,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:54:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 15:54:27,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:54:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 15:54:27,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410612744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:54:27,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:54:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-07 15:54:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083375226] [2024-11-07 15:54:27,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:54:27,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 15:54:27,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 15:54:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-07 15:54:27,341 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:54:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:27,380 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2024-11-07 15:54:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 15:54:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-07 15:54:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:27,381 INFO L225 Difference]: With dead ends: 59 [2024-11-07 15:54:27,381 INFO L226 Difference]: Without dead ends: 59 [2024-11-07 15:54:27,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-07 15:54:27,381 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:27,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:54:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-07 15:54:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-07 15:54:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 54 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 15:54:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-11-07 15:54:27,384 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 27 [2024-11-07 15:54:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:27,384 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-11-07 15:54:27,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:54:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-11-07 15:54:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 15:54:27,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:27,384 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:27,397 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 15:54:27,585 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,SelfDestructingSolverStorable8 [2024-11-07 15:54:27,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:27,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1940432192, now seen corresponding path program 1 times [2024-11-07 15:54:27,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:27,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118919643] [2024-11-07 15:54:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:27,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 15:54:27,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:54:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118919643] [2024-11-07 15:54:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118919643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:54:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367965007] [2024-11-07 15:54:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:54:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:54:27,767 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 15:54:27,768 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 15:54:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:54:27,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-07 15:54:27,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:54:27,882 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 11 treesize of output 7 [2024-11-07 15:54:27,886 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 15 treesize of output 1 [2024-11-07 15:54:27,949 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 7 treesize of output 3 [2024-11-07 15:54:28,011 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 16 treesize of output 8 [2024-11-07 15:54:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:28,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:54:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 15:54:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367965007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:54:28,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:54:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 22 [2024-11-07 15:54:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385726802] [2024-11-07 15:54:28,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:54:28,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 15:54:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:54:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 15:54:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-11-07 15:54:28,116 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 15:54:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:54:28,296 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-07 15:54:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 15:54:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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) Word has length 28 [2024-11-07 15:54:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:54:28,297 INFO L225 Difference]: With dead ends: 56 [2024-11-07 15:54:28,297 INFO L226 Difference]: Without dead ends: 56 [2024-11-07 15:54:28,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2024-11-07 15:54:28,298 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 15:54:28,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 298 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 15:54:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-07 15:54:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-07 15:54:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 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 15:54:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-07 15:54:28,304 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 28 [2024-11-07 15:54:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:54:28,304 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-07 15:54:28,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 15:54:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-07 15:54:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 15:54:28,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:54:28,305 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:28,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 15:54:28,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-07 15:54:28,505 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-07 15:54:28,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:54:28,506 INFO L85 PathProgramCache]: Analyzing trace with hash 38835068, now seen corresponding path program 3 times [2024-11-07 15:54:28,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:54:28,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975477453] [2024-11-07 15:54:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:54:28,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:54:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:54:28,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 15:54:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 15:54:28,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 15:54:28,541 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 15:54:28,542 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-11-07 15:54:28,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2024-11-07 15:54:28,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 15:54:28,545 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:54:28,558 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 15:54:28,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:54:28 BoogieIcfgContainer [2024-11-07 15:54:28,560 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 15:54:28,561 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 15:54:28,561 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 15:54:28,561 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 15:54:28,561 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:24" (3/4) ... [2024-11-07 15:54:28,562 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-07 15:54:28,586 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 15:54:28,586 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 15:54:28,586 INFO L158 Benchmark]: Toolchain (without parser) took 4666.30ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 90.9MB in the beginning and 49.0MB in the end (delta: 41.8MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2024-11-07 15:54:28,586 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 15:54:28,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.58ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 73.8MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 15:54:28,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.52ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 15:54:28,587 INFO L158 Benchmark]: Boogie Preprocessor took 39.80ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.4MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 15:54:28,587 INFO L158 Benchmark]: RCFGBuilder took 263.71ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 57.7MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 15:54:28,587 INFO L158 Benchmark]: TraceAbstraction took 4076.69ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 57.2MB in the beginning and 50.7MB in the end (delta: 6.5MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2024-11-07 15:54:28,590 INFO L158 Benchmark]: Witness Printer took 25.14ms. Allocated memory is still 159.4MB. Free memory was 50.7MB in the beginning and 49.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 15:54:28,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.58ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 73.8MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.52ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.80ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.4MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 263.71ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 57.7MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4076.69ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 57.2MB in the beginning and 50.7MB in the end (delta: 6.5MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Witness Printer took 25.14ms. Allocated memory is still 159.4MB. Free memory was 50.7MB in the beginning and 49.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L603] int len = 2; VAL [len=2] [L604] len < 32 && __VERIFIER_nondet_int() [L604] len < 32 && __VERIFIER_nondet_int() VAL [len=2] [L604] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L607] CALL, EXPR sll_create(len + 1) [L575] SLL head = ((void *)0); VAL [head={0:0}, len=3] [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) VAL [head={0:0}, len=3, new_head={-1:0}] [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) VAL [head={-1:0}, len=2, new_head={-2:0}] [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) VAL [head={-2:0}, len=1, new_head={-3:0}] [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND FALSE !(len > 0) VAL [head={-3:0}] [L585] return head; VAL [\result={-3:0}] [L607] RET, EXPR sll_create(len + 1) [L607] SLL s = sll_create(len + 1); [L608] CALL, EXPR sll_length(s) [L588] int len = 0; VAL [head={-3:0}, len=0] [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND FALSE !(\read(head)) VAL [len=3] [L593] return len; VAL [\result=3] [L608] RET, EXPR sll_length(s) [L608] COND TRUE len != sll_length(s) [L613] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_length_check-1.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 602]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 1134 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 897 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 591 IncrementalHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 237 mSDtfsCounter, 591 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 1305 SizeOfPredicates, 8 NumberOfNonLiveVariables, 739 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 108/148 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-07 15:54:28,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)