./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 15:01:40,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 15:01:40,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 15:01:40,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 15:01:40,824 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 15:01:40,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 15:01:40,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 15:01:40,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 15:01:40,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 15:01:40,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 15:01:40,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 15:01:40,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 15:01:40,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 15:01:40,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 15:01:40,841 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 15:01:40,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 15:01:40,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 15:01:40,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 15:01:40,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 15:01:40,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 15:01:40,843 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 15:01:40,843 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 15:01:40,843 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 15:01:40,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 15:01:40,844 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 15:01:40,844 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 15:01:40,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 15:01:40,845 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 15:01:40,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 15:01:40,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 15:01:40,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 15:01:40,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 15:01:40,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 15:01:40,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 15:01:40,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 15:01:40,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 15:01:40,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 15:01:40,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 15:01:40,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 15:01:40,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 15:01:40,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 15:01:40,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 15:01:40,849 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 [2024-11-20 15:01:41,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 15:01:41,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 15:01:41,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 15:01:41,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 15:01:41,075 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 15:01:41,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2024-11-20 15:01:42,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 15:01:42,680 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 15:01:42,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2024-11-20 15:01:42,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7132ddfd6/93d3658de3ae499ca79995233464b12f/FLAG0a92c2981 [2024-11-20 15:01:42,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7132ddfd6/93d3658de3ae499ca79995233464b12f [2024-11-20 15:01:42,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 15:01:42,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 15:01:42,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 15:01:42,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 15:01:42,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 15:01:42,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:42" (1/1) ... [2024-11-20 15:01:42,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f33864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:42, skipping insertion in model container [2024-11-20 15:01:42,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:42" (1/1) ... [2024-11-20 15:01:42,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 15:01:43,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 15:01:43,113 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 15:01:43,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 15:01:43,204 INFO L204 MainTranslator]: Completed translation [2024-11-20 15:01:43,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43 WrapperNode [2024-11-20 15:01:43,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 15:01:43,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 15:01:43,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 15:01:43,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 15:01:43,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,269 INFO L138 Inliner]: procedures = 18, calls = 293, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 835 [2024-11-20 15:01:43,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 15:01:43,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 15:01:43,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 15:01:43,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 15:01:43,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,339 INFO L175 MemorySlicer]: Split 189 memory accesses to 5 slices as follows [2, 41, 7, 2, 137]. 72 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 0, 7, 2, 0]. The 127 writes are split as follows [0, 0, 0, 0, 127]. [2024-11-20 15:01:43,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 15:01:43,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 15:01:43,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 15:01:43,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 15:01:43,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (1/1) ... [2024-11-20 15:01:43,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 15:01:43,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:43,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 15:01:43,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 15:01:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 15:01:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 15:01:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 15:01:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-20 15:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 15:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 15:01:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 15:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 15:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 15:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 15:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 15:01:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 15:01:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 15:01:43,721 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 15:01:43,725 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 15:01:49,943 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-20 15:01:49,943 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 15:01:49,964 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 15:01:49,968 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 15:01:49,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:49 BoogieIcfgContainer [2024-11-20 15:01:49,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 15:01:49,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 15:01:49,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 15:01:49,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 15:01:49,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:01:42" (1/3) ... [2024-11-20 15:01:49,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106878ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:01:49, skipping insertion in model container [2024-11-20 15:01:49,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:43" (2/3) ... [2024-11-20 15:01:49,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106878ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:01:49, skipping insertion in model container [2024-11-20 15:01:49,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:49" (3/3) ... [2024-11-20 15:01:49,978 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2024-11-20 15:01:50,007 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 15:01:50,008 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 104 error locations. [2024-11-20 15:01:50,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 15:01:50,100 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;@5e07ff31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 15:01:50,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2024-11-20 15:01:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 141 states have (on average 2.0354609929078014) internal successors, (287), 245 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:01:50,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:50,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:01:50,112 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:01:50,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash 926012, now seen corresponding path program 1 times [2024-11-20 15:01:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162458119] [2024-11-20 15:01:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:50,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162458119] [2024-11-20 15:01:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162458119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:50,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:50,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:01:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027508019] [2024-11-20 15:01:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:50,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:01:50,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:01:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:01:50,567 INFO L87 Difference]: Start difference. First operand has 246 states, 141 states have (on average 2.0354609929078014) internal successors, (287), 245 states have internal predecessors, (287), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:56,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:00,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:04,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:06,172 INFO L93 Difference]: Finished difference Result 246 states and 276 transitions. [2024-11-20 15:02:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 15:02:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:06,183 INFO L225 Difference]: With dead ends: 246 [2024-11-20 15:02:06,184 INFO L226 Difference]: Without dead ends: 243 [2024-11-20 15:02:06,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:06,187 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 164 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:06,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 380 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2024-11-20 15:02:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-20 15:02:06,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-20 15:02:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 139 states have (on average 1.9568345323741008) internal successors, (272), 242 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2024-11-20 15:02:06,225 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 4 [2024-11-20 15:02:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:06,226 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2024-11-20 15:02:06,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2024-11-20 15:02:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:02:06,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:06,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:02:06,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 15:02:06,230 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:02:06,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:06,232 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-11-20 15:02:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241931232] [2024-11-20 15:02:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241931232] [2024-11-20 15:02:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241931232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865148942] [2024-11-20 15:02:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:06,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:02:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:02:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:06,739 INFO L87 Difference]: Start difference. First operand 243 states and 272 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:12,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:16,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:18,378 INFO L93 Difference]: Finished difference Result 202 states and 231 transitions. [2024-11-20 15:02:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:18,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 15:02:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:18,380 INFO L225 Difference]: With dead ends: 202 [2024-11-20 15:02:18,380 INFO L226 Difference]: Without dead ends: 202 [2024-11-20 15:02:18,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:02:18,381 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 277 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:18,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 151 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2024-11-20 15:02:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-20 15:02:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-20 15:02:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 139 states have (on average 1.6618705035971224) internal successors, (231), 201 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 231 transitions. [2024-11-20 15:02:18,391 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 231 transitions. Word has length 4 [2024-11-20 15:02:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:18,391 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 231 transitions. [2024-11-20 15:02:18,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 231 transitions. [2024-11-20 15:02:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:02:18,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:18,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:02:18,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 15:02:18,392 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:02:18,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2024-11-20 15:02:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:18,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145974509] [2024-11-20 15:02:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:18,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145974509] [2024-11-20 15:02:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145974509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344172084] [2024-11-20 15:02:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:18,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:02:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:02:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:18,980 INFO L87 Difference]: Start difference. First operand 202 states and 231 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:24,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:28,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:29,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:29,607 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2024-11-20 15:02:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:29,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 15:02:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:29,609 INFO L225 Difference]: With dead ends: 161 [2024-11-20 15:02:29,609 INFO L226 Difference]: Without dead ends: 161 [2024-11-20 15:02:29,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:29,610 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 80 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:29,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 328 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 158 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2024-11-20 15:02:29,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-20 15:02:29,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-20 15:02:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 160 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 190 transitions. [2024-11-20 15:02:29,617 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 190 transitions. Word has length 4 [2024-11-20 15:02:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:29,617 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 190 transitions. [2024-11-20 15:02:29,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 190 transitions. [2024-11-20 15:02:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-20 15:02:29,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:29,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:02:29,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 15:02:29,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:02:29,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash 619894771, now seen corresponding path program 1 times [2024-11-20 15:02:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:29,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836137858] [2024-11-20 15:02:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:34,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:34,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836137858] [2024-11-20 15:02:34,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836137858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:34,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:34,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845607089] [2024-11-20 15:02:34,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:34,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:02:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:02:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:02:34,514 INFO L87 Difference]: Start difference. First operand 161 states and 190 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:34,982 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2024-11-20 15:02:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:02:34,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-20 15:02:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:34,984 INFO L225 Difference]: With dead ends: 163 [2024-11-20 15:02:34,984 INFO L226 Difference]: Without dead ends: 163 [2024-11-20 15:02:34,985 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 [2024-11-20 15:02:34,985 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 91 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:34,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 247 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 15:02:34,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-20 15:02:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2024-11-20 15:02:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 139 states have (on average 1.3597122302158273) internal successors, (189), 160 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 189 transitions. [2024-11-20 15:02:34,990 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 189 transitions. Word has length 88 [2024-11-20 15:02:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:34,991 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 189 transitions. [2024-11-20 15:02:34,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 189 transitions. [2024-11-20 15:02:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-20 15:02:34,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:34,993 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:02:34,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 15:02:34,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:02:34,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2036637964, now seen corresponding path program 1 times [2024-11-20 15:02:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501278485] [2024-11-20 15:02:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:39,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:39,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501278485] [2024-11-20 15:02:39,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501278485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:39,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:39,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:39,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242143508] [2024-11-20 15:02:39,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:39,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:02:39,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:39,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:02:39,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:02:39,667 INFO L87 Difference]: Start difference. First operand 161 states and 189 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:39,706 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2024-11-20 15:02:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:02:39,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-20 15:02:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:39,710 INFO L225 Difference]: With dead ends: 161 [2024-11-20 15:02:39,710 INFO L226 Difference]: Without dead ends: 161 [2024-11-20 15:02:39,710 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 [2024-11-20 15:02:39,711 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:39,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:02:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-20 15:02:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-20 15:02:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 160 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 188 transitions. [2024-11-20 15:02:39,723 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 188 transitions. Word has length 89 [2024-11-20 15:02:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:39,723 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 188 transitions. [2024-11-20 15:02:39,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 188 transitions. [2024-11-20 15:02:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-20 15:02:39,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:39,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:02:39,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 15:02:39,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:02:39,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:39,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2036637796, now seen corresponding path program 1 times [2024-11-20 15:02:39,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:39,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850665479] [2024-11-20 15:02:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:44,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:44,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850665479] [2024-11-20 15:02:44,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850665479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:44,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:44,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:44,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089080451] [2024-11-20 15:02:44,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:44,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:02:44,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:44,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:02:44,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:44,211 INFO L87 Difference]: Start difference. First operand 161 states and 188 transitions. Second operand has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:49,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:51,381 INFO L93 Difference]: Finished difference Result 160 states and 187 transitions. [2024-11-20 15:02:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-20 15:02:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:51,383 INFO L225 Difference]: With dead ends: 160 [2024-11-20 15:02:51,383 INFO L226 Difference]: Without dead ends: 160 [2024-11-20 15:02:51,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:02:51,384 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 71 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:51,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 254 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2024-11-20 15:02:51,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-20 15:02:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-20 15:02:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 159 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 187 transitions. [2024-11-20 15:02:51,390 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 187 transitions. Word has length 89 [2024-11-20 15:02:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:51,390 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 187 transitions. [2024-11-20 15:02:51,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 187 transitions. [2024-11-20 15:02:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-20 15:02:51,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:51,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:02:51,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 15:02:51,392 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:02:51,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:51,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2036637797, now seen corresponding path program 1 times [2024-11-20 15:02:51,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:51,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954504640] [2024-11-20 15:02:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:56,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954504640] [2024-11-20 15:02:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954504640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:56,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:56,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 15:02:56,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773134329] [2024-11-20 15:02:56,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:56,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 15:02:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 15:02:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:02:56,463 INFO L87 Difference]: Start difference. First operand 160 states and 187 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:03:01,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:03:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:03:04,926 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2024-11-20 15:03:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 15:03:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-20 15:03:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:03:04,928 INFO L225 Difference]: With dead ends: 159 [2024-11-20 15:03:04,930 INFO L226 Difference]: Without dead ends: 159 [2024-11-20 15:03:04,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:03:04,931 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 112 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-20 15:03:04,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 307 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2024-11-20 15:03:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-20 15:03:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-20 15:03:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 139 states have (on average 1.3381294964028776) internal successors, (186), 158 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:03:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2024-11-20 15:03:04,944 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 89 [2024-11-20 15:03:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:03:04,944 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2024-11-20 15:03:04,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:03:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2024-11-20 15:03:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 15:03:04,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:03:04,946 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:03:04,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 15:03:04,946 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-20 15:03:04,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:03:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1296152919, now seen corresponding path program 1 times [2024-11-20 15:03:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:03:04,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139991258] [2024-11-20 15:03:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:03:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:03:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:03:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:03:14,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:03:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139991258] [2024-11-20 15:03:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139991258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:03:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:03:14,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:03:14,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262016081] [2024-11-20 15:03:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:03:14,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 15:03:14,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:03:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 15:03:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:03:14,170 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:03:18,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []