./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-15/count_up_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/termination-15/count_up_alloca.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', 'f12e3955ea6fcca41dc2c68fc8e1d5a42d0369455d727c76f4dfb832d3060ba5'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-15/count_up_alloca.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f12e3955ea6fcca41dc2c68fc8e1d5a42d0369455d727c76f4dfb832d3060ba5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:21:27,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:21:27,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-07 16:21:27,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:21:27,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:21:27,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:21:27,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:21:27,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:21:27,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:21:27,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:21:27,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:21:27,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:21:27,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:21:27,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:21:27,882 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:21:27,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:21:27,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:21:27,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:21:27,883 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:21:27,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:21:27,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:21:27,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:21:27,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:21:27,886 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f12e3955ea6fcca41dc2c68fc8e1d5a42d0369455d727c76f4dfb832d3060ba5 [2024-11-07 16:21:28,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:21:28,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:21:28,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:21:28,320 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:21:28,320 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:21:28,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/count_up_alloca.i [2024-11-07 16:21:29,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:21:29,898 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:21:29,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-15/count_up_alloca.i [2024-11-07 16:21:29,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e7bde334e/4951910e215645dd9c4fab6cd69fd26d/FLAGc33539b81 [2024-11-07 16:21:30,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e7bde334e/4951910e215645dd9c4fab6cd69fd26d [2024-11-07 16:21:30,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:21:30,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:21:30,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:21:30,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:21:30,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:21:30,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2780661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30, skipping insertion in model container [2024-11-07 16:21:30,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,194 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:21:30,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:21:30,400 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:21:30,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:21:30,474 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:21:30,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30 WrapperNode [2024-11-07 16:21:30,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:21:30,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:21:30,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:21:30,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:21:30,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,515 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2024-11-07 16:21:30,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:21:30,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:21:30,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:21:30,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:21:30,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,537 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-07 16:21:30,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:21:30,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:21:30,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:21:30,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:21:30,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (1/1) ... [2024-11-07 16:21:30,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:21:30,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:30,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 16:21:30,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 16:21:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 16:21:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 16:21:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 16:21:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:21:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:21:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:21:30,670 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:21:30,671 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:21:30,808 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-07 16:21:30,808 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:21:30,814 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:21:30,814 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 16:21:30,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:30 BoogieIcfgContainer [2024-11-07 16:21:30,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:21:30,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:21:30,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:21:30,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:21:30,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:21:30" (1/3) ... [2024-11-07 16:21:30,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb506d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:30, skipping insertion in model container [2024-11-07 16:21:30,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:30" (2/3) ... [2024-11-07 16:21:30,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb506d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:30, skipping insertion in model container [2024-11-07 16:21:30,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:30" (3/3) ... [2024-11-07 16:21:30,821 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_alloca.i [2024-11-07 16:21:30,830 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:21:30,830 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-07 16:21:30,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:21:30,865 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;@15ac0b38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:21:30,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-07 16:21:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 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 16:21:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-07 16:21:30,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:30,874 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 16:21:30,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:30,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 889508774, now seen corresponding path program 1 times [2024-11-07 16:21:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162570517] [2024-11-07 16:21:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:31,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162570517] [2024-11-07 16:21:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162570517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:31,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:21:31,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:21:31,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150123663] [2024-11-07 16:21:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:31,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:21:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:21:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:21:31,146 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:31,208 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-07 16:21:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:21:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-07 16:21:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:31,215 INFO L225 Difference]: With dead ends: 31 [2024-11-07 16:21:31,216 INFO L226 Difference]: Without dead ends: 29 [2024-11-07 16:21:31,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:21:31,221 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:31,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 26 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-07 16:21:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-07 16:21:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.65) internal successors, (33), 28 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 16:21:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-07 16:21:31,246 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2024-11-07 16:21:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:31,247 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-07 16:21:31,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-07 16:21:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:21:31,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:31,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:31,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:21:31,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:31,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash 119449364, now seen corresponding path program 1 times [2024-11-07 16:21:31,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:31,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375774076] [2024-11-07 16:21:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375774076] [2024-11-07 16:21:31,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375774076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:31,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:21:31,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:21:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631976610] [2024-11-07 16:21:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:31,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:21:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:21:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:21:31,390 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:31,426 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-07 16:21:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:21:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:21:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:31,427 INFO L225 Difference]: With dead ends: 25 [2024-11-07 16:21:31,428 INFO L226 Difference]: Without dead ends: 25 [2024-11-07 16:21:31,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:21:31,428 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:31,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:21:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-07 16:21:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-07 16:21:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.45) 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 16:21:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-07 16:21:31,434 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2024-11-07 16:21:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:31,434 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-07 16:21:31,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-07 16:21:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:21:31,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:31,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:31,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:21:31,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:31,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 119449365, now seen corresponding path program 1 times [2024-11-07 16:21:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:31,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574870958] [2024-11-07 16:21:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:31,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:31,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574870958] [2024-11-07 16:21:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574870958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:31,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:21:31,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:21:31,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918093228] [2024-11-07 16:21:31,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:31,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:21:31,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:21:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:21:31,739 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:31,919 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-07 16:21:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:21:31,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:21:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:31,920 INFO L225 Difference]: With dead ends: 48 [2024-11-07 16:21:31,921 INFO L226 Difference]: Without dead ends: 48 [2024-11-07 16:21:31,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:21:31,923 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:31,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 105 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-07 16:21:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 30. [2024-11-07 16:21:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.4) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-07 16:21:31,930 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 8 [2024-11-07 16:21:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:31,930 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-07 16:21:31,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-07 16:21:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:21:31,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:31,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:31,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:21:31,931 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:31,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash 176707667, now seen corresponding path program 1 times [2024-11-07 16:21:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:31,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631494803] [2024-11-07 16:21:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:32,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631494803] [2024-11-07 16:21:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631494803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:21:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:21:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533636794] [2024-11-07 16:21:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:32,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:21:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:21:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:21:32,201 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:32,264 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-07 16:21:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:21:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:21:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:32,265 INFO L225 Difference]: With dead ends: 34 [2024-11-07 16:21:32,265 INFO L226 Difference]: Without dead ends: 34 [2024-11-07 16:21:32,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:21:32,266 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:32,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 34 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-07 16:21:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-07 16:21:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 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 16:21:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-07 16:21:32,269 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 8 [2024-11-07 16:21:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:32,270 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-07 16:21:32,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-07 16:21:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-07 16:21:32,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:32,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:32,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:21:32,271 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:32,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2056141710, now seen corresponding path program 1 times [2024-11-07 16:21:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622839439] [2024-11-07 16:21:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:32,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:32,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622839439] [2024-11-07 16:21:32,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622839439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:21:32,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212347340] [2024-11-07 16:21:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:32,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:32,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:32,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:21:32,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 16:21:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:32,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 16:21:32,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:21:32,466 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 16:21:32,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:21:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212347340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:21:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-07 16:21:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769306155] [2024-11-07 16:21:32,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:32,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:21:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:21:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:21:32,470 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:32,500 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-11-07 16:21:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:21:32,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-07 16:21:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:32,503 INFO L225 Difference]: With dead ends: 47 [2024-11-07 16:21:32,503 INFO L226 Difference]: Without dead ends: 47 [2024-11-07 16:21:32,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:21:32,504 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:32,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 69 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:21:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-07 16:21:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2024-11-07 16:21:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-07 16:21:32,512 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 12 [2024-11-07 16:21:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:32,513 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-07 16:21:32,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-07 16:21:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-07 16:21:32,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:32,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:32,532 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 16:21:32,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:32,714 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:32,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1663114700, now seen corresponding path program 1 times [2024-11-07 16:21:32,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023958657] [2024-11-07 16:21:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:33,021 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 16:21:33,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023958657] [2024-11-07 16:21:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023958657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:21:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095011944] [2024-11-07 16:21:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:33,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:33,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:33,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:21:33,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 16:21:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:33,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 16:21:33,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:21:33,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-07 16:21:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:33,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:21:33,748 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 16:21:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095011944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:21:33,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:21:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-07 16:21:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909680944] [2024-11-07 16:21:33,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:21:33,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:21:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:33,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:21:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:21:33,750 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:33,951 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-11-07 16:21:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:21:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-07 16:21:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:33,953 INFO L225 Difference]: With dead ends: 35 [2024-11-07 16:21:33,953 INFO L226 Difference]: Without dead ends: 35 [2024-11-07 16:21:33,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-07 16:21:33,954 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:33,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 56 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-07 16:21:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-07 16:21:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 31 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 16:21:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-07 16:21:33,957 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2024-11-07 16:21:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:33,957 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-07 16:21:33,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-07 16:21:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:21:33,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:33,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:33,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 16:21:34,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:34,159 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:34,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -684163994, now seen corresponding path program 1 times [2024-11-07 16:21:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294616202] [2024-11-07 16:21:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294616202] [2024-11-07 16:21:34,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294616202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:21:34,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652169855] [2024-11-07 16:21:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:34,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:34,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:21:34,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 16:21:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:34,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 16:21:34,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:21:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:34,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:21:34,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-07 16:21:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652169855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:21:34,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:21:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-07 16:21:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94763831] [2024-11-07 16:21:34,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:21:34,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:21:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:21:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:21:34,442 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:34,536 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2024-11-07 16:21:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:21:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-07 16:21:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:34,537 INFO L225 Difference]: With dead ends: 42 [2024-11-07 16:21:34,537 INFO L226 Difference]: Without dead ends: 42 [2024-11-07 16:21:34,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-07 16:21:34,538 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 100 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:34,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 60 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-07 16:21:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-11-07 16:21:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 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 16:21:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-07 16:21:34,543 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 13 [2024-11-07 16:21:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:34,544 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-07 16:21:34,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-07 16:21:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-07 16:21:34,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:34,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:34,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 16:21:34,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:34,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:34,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash 265751470, now seen corresponding path program 1 times [2024-11-07 16:21:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817222443] [2024-11-07 16:21:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:21:34,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:34,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817222443] [2024-11-07 16:21:34,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817222443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:34,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:21:34,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:21:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444196351] [2024-11-07 16:21:34,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:34,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:21:34,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:21:34,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:21:34,790 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:34,818 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-07 16:21:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:21:34,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-07 16:21:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:34,820 INFO L225 Difference]: With dead ends: 39 [2024-11-07 16:21:34,820 INFO L226 Difference]: Without dead ends: 39 [2024-11-07 16:21:34,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:21:34,821 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:34,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 29 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:21:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-07 16:21:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2024-11-07 16:21:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 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 16:21:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-07 16:21:34,828 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2024-11-07 16:21:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:34,828 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-07 16:21:34,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-07 16:21:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:21:34,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:34,828 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:34,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 16:21:34,829 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:34,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1412805497, now seen corresponding path program 1 times [2024-11-07 16:21:34,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:34,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429600960] [2024-11-07 16:21:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:34,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:21:34,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429600960] [2024-11-07 16:21:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429600960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:21:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803947184] [2024-11-07 16:21:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:34,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:34,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:21:34,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 16:21:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:34,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 16:21:34,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:21:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:21:34,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:21:34,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803947184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:34,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:21:34,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-07 16:21:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383318360] [2024-11-07 16:21:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:34,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:21:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:21:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:21:34,977 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:35,006 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-07 16:21:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:21:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-07 16:21:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:35,007 INFO L225 Difference]: With dead ends: 42 [2024-11-07 16:21:35,007 INFO L226 Difference]: Without dead ends: 42 [2024-11-07 16:21:35,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:21:35,007 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 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 16:21:35,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:21:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-07 16:21:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-07 16:21:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-07 16:21:35,010 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 17 [2024-11-07 16:21:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:35,010 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-07 16:21:35,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-07 16:21:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:21:35,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:35,011 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:35,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 16:21:35,214 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 16:21:35,215 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:35,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash 132941819, now seen corresponding path program 1 times [2024-11-07 16:21:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458230726] [2024-11-07 16:21:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458230726] [2024-11-07 16:21:35,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458230726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:21:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263493760] [2024-11-07 16:21:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:35,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:35,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:35,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:21:35,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 16:21:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:35,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 16:21:35,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:21:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:35,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:21:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263493760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:21:35,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:21:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-07 16:21:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455808011] [2024-11-07 16:21:35,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:21:35,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:21:35,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:21:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:21:35,418 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 16:21:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:35,505 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2024-11-07 16:21:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:21:35,506 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 17 [2024-11-07 16:21:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:35,506 INFO L225 Difference]: With dead ends: 59 [2024-11-07 16:21:35,506 INFO L226 Difference]: Without dead ends: 59 [2024-11-07 16:21:35,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:21:35,507 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:35,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 104 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-07 16:21:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2024-11-07 16:21:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-07 16:21:35,511 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 17 [2024-11-07 16:21:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:35,511 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-07 16:21:35,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 16:21:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-07 16:21:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-07 16:21:35,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:35,512 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:35,545 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 16:21:35,712 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 16:21:35,713 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:35,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash 847296251, now seen corresponding path program 1 times [2024-11-07 16:21:35,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:35,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772597784] [2024-11-07 16:21:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:35,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:21:35,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772597784] [2024-11-07 16:21:35,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772597784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:21:35,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:21:35,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:21:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433913925] [2024-11-07 16:21:35,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:21:35,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:21:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:35,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:21:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:21:35,794 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:35,810 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-11-07 16:21:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:21:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-07 16:21:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:35,810 INFO L225 Difference]: With dead ends: 45 [2024-11-07 16:21:35,811 INFO L226 Difference]: Without dead ends: 26 [2024-11-07 16:21:35,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:21:35,811 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:35,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:21:35,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-07 16:21:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-07 16:21:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-07 16:21:35,813 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2024-11-07 16:21:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:35,813 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-07 16:21:35,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-07 16:21:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-07 16:21:35,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:21:35,813 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:35,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 16:21:35,813 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-07 16:21:35,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:21:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash -719856990, now seen corresponding path program 2 times [2024-11-07 16:21:35,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:21:35,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495887014] [2024-11-07 16:21:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:21:35,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:21:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:21:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:21:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:21:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495887014] [2024-11-07 16:21:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495887014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:21:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997319199] [2024-11-07 16:21:35,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:21:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:21:35,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:21:35,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:21:35,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 16:21:36,007 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:21:36,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:21:36,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 16:21:36,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:21:36,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 16:21:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:21:36,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:21:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:21:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997319199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:21:36,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:21:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-07 16:21:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480119563] [2024-11-07 16:21:36,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:21:36,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:21:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:21:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:21:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:21:36,553 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:21:36,767 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-07 16:21:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:21:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-07 16:21:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:21:36,769 INFO L225 Difference]: With dead ends: 33 [2024-11-07 16:21:36,769 INFO L226 Difference]: Without dead ends: 0 [2024-11-07 16:21:36,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:21:36,770 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:21:36,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 73 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:21:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-07 16:21:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-07 16:21:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-07 16:21:36,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-11-07 16:21:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:21:36,771 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-07 16:21:36,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:21:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-07 16:21:36,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-07 16:21:36,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-07 16:21:36,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-07 16:21:36,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-07 16:21:36,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-07 16:21:36,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-07 16:21:36,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-07 16:21:36,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-07 16:21:36,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-07 16:21:36,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-07 16:21:36,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 16:21:36,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 16:21:36,982 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:21:36,984 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 16:21:36,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:21:36 BoogieIcfgContainer [2024-11-07 16:21:36,986 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 16:21:36,987 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 16:21:36,987 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 16:21:36,987 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 16:21:36,987 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:30" (3/4) ... [2024-11-07 16:21:36,989 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 16:21:36,996 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-07 16:21:36,996 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-07 16:21:36,996 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-07 16:21:36,996 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-07 16:21:37,060 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 16:21:37,060 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 16:21:37,060 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 16:21:37,061 INFO L158 Benchmark]: Toolchain (without parser) took 6892.15ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 90.3MB in the beginning and 75.9MB in the end (delta: 14.4MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2024-11-07 16:21:37,062 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:21:37,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.09ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 72.2MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 16:21:37,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.48ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 70.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:21:37,062 INFO L158 Benchmark]: Boogie Preprocessor took 40.23ms. Allocated memory is still 117.4MB. Free memory was 70.7MB in the beginning and 69.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 16:21:37,063 INFO L158 Benchmark]: RCFGBuilder took 256.65ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 57.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 16:21:37,063 INFO L158 Benchmark]: TraceAbstraction took 6170.04ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 56.7MB in the beginning and 80.8MB in the end (delta: -24.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2024-11-07 16:21:37,063 INFO L158 Benchmark]: Witness Printer took 73.80ms. Allocated memory is still 159.4MB. Free memory was 80.8MB in the beginning and 75.9MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 16:21:37,064 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.09ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 72.2MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.48ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 70.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.23ms. Allocated memory is still 117.4MB. Free memory was 70.7MB in the beginning and 69.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 256.65ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 57.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6170.04ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 56.7MB in the beginning and 80.8MB in the end (delta: -24.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 73.80ms. Allocated memory is still 159.4MB. Free memory was 80.8MB in the beginning and 75.9MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 364]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 472 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 472 mSDsluCounter, 664 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 447 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 681 IncrementalHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 217 mSDtfsCounter, 681 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=10, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 69 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 14 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 32/60 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 - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 16:21:37,084 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 Result: TRUE