./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-2.i --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/heap-manipulation/merge_sort-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:50:57,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:50:57,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 14:50:57,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:50:57,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:50:58,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:50:58,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:50:58,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:50:58,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:50:58,043 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:50:58,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:50:58,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:50:58,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:50:58,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:50:58,046 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:50:58,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:50:58,047 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 14:50:58,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:50:58,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 14:50:58,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:50:58,048 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:50:58,049 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:50:58,049 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:50:58,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:50:58,050 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:50:58,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:50:58,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:50:58,051 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 14:50:58,051 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:50:58,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:50:58,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:50:58,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:50:58,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:50:58,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:50:58,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:50:58,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:50:58,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:50:58,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:50:58,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:50:58,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:50:58,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:50:58,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:50:58,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c [2024-11-20 14:50:58,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:50:58,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:50:58,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:50:58,314 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:50:58,314 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:50:58,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2024-11-20 14:50:59,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:50:59,931 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:50:59,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2024-11-20 14:50:59,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70dd0260/1f99bc931159491faf5df91f14fcf96a/FLAG30d6d6355 [2024-11-20 14:51:00,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70dd0260/1f99bc931159491faf5df91f14fcf96a [2024-11-20 14:51:00,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:51:00,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:51:00,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:51:00,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:51:00,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:51:00,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3573aeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00, skipping insertion in model container [2024-11-20 14:51:00,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:51:00,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:51:00,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:51:00,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:51:00,713 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:51:00,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00 WrapperNode [2024-11-20 14:51:00,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:51:00,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:51:00,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:51:00,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:51:00,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,767 INFO L138 Inliner]: procedures = 125, calls = 84, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 302 [2024-11-20 14:51:00,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:51:00,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:51:00,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:51:00,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:51:00,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,828 INFO L175 MemorySlicer]: Split 49 memory accesses to 4 slices as follows [2, 10, 34, 3]. 69 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 13 writes are split as follows [0, 3, 8, 2]. [2024-11-20 14:51:00,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:51:00,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:51:00,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:51:00,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:51:00,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (1/1) ... [2024-11-20 14:51:00,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:51:00,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:00,906 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 14:51:00,911 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 14:51:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 14:51:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 14:51:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 14:51:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 14:51:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2024-11-20 14:51:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2024-11-20 14:51:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-20 14:51:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-20 14:51:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 14:51:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 14:51:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 14:51:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 14:51:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 14:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 14:51:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 14:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 14:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 14:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 14:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 14:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 14:51:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 14:51:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 14:51:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:51:00,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:51:01,163 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:51:01,166 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:51:01,796 INFO L? ?]: Removed 241 outVars from TransFormulas that were not future-live. [2024-11-20 14:51:01,796 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:51:01,822 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:51:01,823 INFO L316 CfgBuilder]: Removed 33 assume(true) statements. [2024-11-20 14:51:01,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:51:01 BoogieIcfgContainer [2024-11-20 14:51:01,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:51:01,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:51:01,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:51:01,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:51:01,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:51:00" (1/3) ... [2024-11-20 14:51:01,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fc864a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:51:01, skipping insertion in model container [2024-11-20 14:51:01,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:51:00" (2/3) ... [2024-11-20 14:51:01,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fc864a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:51:01, skipping insertion in model container [2024-11-20 14:51:01,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:51:01" (3/3) ... [2024-11-20 14:51:01,833 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2024-11-20 14:51:01,847 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:51:01,848 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2024-11-20 14:51:01,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:51:01,903 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;@1b974b75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:51:01,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2024-11-20 14:51:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 142 states have (on average 2.176056338028169) internal successors, (309), 262 states have internal predecessors, (309), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-20 14:51:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-20 14:51:01,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:01,913 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 14:51:01,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:01,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:01,919 INFO L85 PathProgramCache]: Analyzing trace with hash 64039330, now seen corresponding path program 1 times [2024-11-20 14:51:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:01,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361243308] [2024-11-20 14:51:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:02,048 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 14:51:02,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361243308] [2024-11-20 14:51:02,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361243308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:02,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:02,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:51:02,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879975308] [2024-11-20 14:51:02,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:02,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 14:51:02,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:02,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 14:51:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 14:51:02,088 INFO L87 Difference]: Start difference. First operand has 265 states, 142 states have (on average 2.176056338028169) internal successors, (309), 262 states have internal predecessors, (309), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 14:51:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:02,127 INFO L93 Difference]: Finished difference Result 262 states and 287 transitions. [2024-11-20 14:51:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 14:51:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-11-20 14:51:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:02,142 INFO L225 Difference]: With dead ends: 262 [2024-11-20 14:51:02,143 INFO L226 Difference]: Without dead ends: 260 [2024-11-20 14:51:02,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 14:51:02,150 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:02,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:51:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-20 14:51:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2024-11-20 14:51:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 139 states have (on average 1.9280575539568345) internal successors, (268), 257 states have internal predecessors, (268), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 285 transitions. [2024-11-20 14:51:02,212 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 285 transitions. Word has length 5 [2024-11-20 14:51:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:02,213 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 285 transitions. [2024-11-20 14:51:02,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 14:51:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 285 transitions. [2024-11-20 14:51:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 14:51:02,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:02,214 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 14:51:02,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 14:51:02,214 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:02,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1984159211, now seen corresponding path program 1 times [2024-11-20 14:51:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:02,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530158099] [2024-11-20 14:51:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:02,325 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 14:51:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:02,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530158099] [2024-11-20 14:51:02,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530158099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:02,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:02,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:51:02,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483991456] [2024-11-20 14:51:02,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:02,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:51:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:51:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:51:02,329 INFO L87 Difference]: Start difference. First operand 260 states and 285 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-11-20 14:51:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:02,522 INFO L93 Difference]: Finished difference Result 258 states and 283 transitions. [2024-11-20 14:51:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:51:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-11-20 14:51:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:02,525 INFO L225 Difference]: With dead ends: 258 [2024-11-20 14:51:02,527 INFO L226 Difference]: Without dead ends: 258 [2024-11-20 14:51:02,527 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 [2024-11-20 14:51:02,529 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 6 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:02,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 444 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:02,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-20 14:51:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-20 14:51:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 139 states have (on average 1.9136690647482015) internal successors, (266), 255 states have internal predecessors, (266), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 283 transitions. [2024-11-20 14:51:02,546 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 283 transitions. Word has length 6 [2024-11-20 14:51:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:02,547 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 283 transitions. [2024-11-20 14:51:02,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-11-20 14:51:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 283 transitions. [2024-11-20 14:51:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 14:51:02,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:02,548 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 14:51:02,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 14:51:02,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:02,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1984159212, now seen corresponding path program 1 times [2024-11-20 14:51:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505299340] [2024-11-20 14:51:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:02,673 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 14:51:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:02,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505299340] [2024-11-20 14:51:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505299340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:02,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:02,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:51:02,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766692958] [2024-11-20 14:51:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:02,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:51:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:51:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:51:02,677 INFO L87 Difference]: Start difference. First operand 258 states and 283 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-11-20 14:51:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:02,832 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2024-11-20 14:51:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:51:02,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-11-20 14:51:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:02,833 INFO L225 Difference]: With dead ends: 256 [2024-11-20 14:51:02,833 INFO L226 Difference]: Without dead ends: 256 [2024-11-20 14:51:02,834 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 [2024-11-20 14:51:02,834 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 6 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:02,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 452 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-20 14:51:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-20 14:51:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 139 states have (on average 1.8992805755395683) internal successors, (264), 253 states have internal predecessors, (264), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2024-11-20 14:51:02,855 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 6 [2024-11-20 14:51:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:02,855 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2024-11-20 14:51:02,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-11-20 14:51:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2024-11-20 14:51:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 14:51:02,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:02,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 14:51:02,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 14:51:02,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:02,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1984158653, now seen corresponding path program 1 times [2024-11-20 14:51:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464248911] [2024-11-20 14:51:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:02,898 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 14:51:02,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:02,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464248911] [2024-11-20 14:51:02,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464248911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:02,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:02,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:51:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663970369] [2024-11-20 14:51:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:02,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:51:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:51:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:51:02,900 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-11-20 14:51:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:03,132 INFO L93 Difference]: Finished difference Result 389 states and 433 transitions. [2024-11-20 14:51:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:51:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-11-20 14:51:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:03,135 INFO L225 Difference]: With dead ends: 389 [2024-11-20 14:51:03,135 INFO L226 Difference]: Without dead ends: 388 [2024-11-20 14:51:03,136 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 [2024-11-20 14:51:03,137 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 133 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:03,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 394 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-20 14:51:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 259. [2024-11-20 14:51:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 142 states have (on average 1.8873239436619718) internal successors, (268), 256 states have internal predecessors, (268), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 285 transitions. [2024-11-20 14:51:03,153 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 285 transitions. Word has length 6 [2024-11-20 14:51:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:03,153 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 285 transitions. [2024-11-20 14:51:03,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-11-20 14:51:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 285 transitions. [2024-11-20 14:51:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 14:51:03,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:03,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:03,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 14:51:03,154 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:03,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -189393257, now seen corresponding path program 1 times [2024-11-20 14:51:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676928645] [2024-11-20 14:51:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:03,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:03,203 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 14:51:03,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:03,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676928645] [2024-11-20 14:51:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676928645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:03,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:03,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:51:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798449968] [2024-11-20 14:51:03,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:03,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:51:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:51:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:51:03,205 INFO L87 Difference]: Start difference. First operand 259 states and 285 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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) [2024-11-20 14:51:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:03,245 INFO L93 Difference]: Finished difference Result 271 states and 296 transitions. [2024-11-20 14:51:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:51:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 [2024-11-20 14:51:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:03,247 INFO L225 Difference]: With dead ends: 271 [2024-11-20 14:51:03,247 INFO L226 Difference]: Without dead ends: 270 [2024-11-20 14:51:03,247 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 14:51:03,249 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 12 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:03,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 541 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:51:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-20 14:51:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2024-11-20 14:51:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 141 states have (on average 1.8865248226950355) internal successors, (266), 255 states have internal predecessors, (266), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 283 transitions. [2024-11-20 14:51:03,262 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 283 transitions. Word has length 8 [2024-11-20 14:51:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:03,264 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 283 transitions. [2024-11-20 14:51:03,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2024-11-20 14:51:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 283 transitions. [2024-11-20 14:51:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 14:51:03,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:03,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:03,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 14:51:03,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:03,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1387795881, now seen corresponding path program 1 times [2024-11-20 14:51:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520472581] [2024-11-20 14:51:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:03,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:03,357 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 14:51:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:03,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520472581] [2024-11-20 14:51:03,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520472581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:03,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:03,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:51:03,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332680692] [2024-11-20 14:51:03,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:03,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:51:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:03,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:51:03,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:51:03,362 INFO L87 Difference]: Start difference. First operand 258 states and 283 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:03,494 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2024-11-20 14:51:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:51:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-20 14:51:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:03,496 INFO L225 Difference]: With dead ends: 256 [2024-11-20 14:51:03,496 INFO L226 Difference]: Without dead ends: 256 [2024-11-20 14:51:03,497 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 [2024-11-20 14:51:03,497 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:03,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 443 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-20 14:51:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-20 14:51:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 141 states have (on average 1.872340425531915) internal successors, (264), 253 states have internal predecessors, (264), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2024-11-20 14:51:03,504 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 11 [2024-11-20 14:51:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:03,504 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2024-11-20 14:51:03,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2024-11-20 14:51:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 14:51:03,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:03,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:03,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 14:51:03,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:03,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1387795880, now seen corresponding path program 1 times [2024-11-20 14:51:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:03,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767475416] [2024-11-20 14:51:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:03,614 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 14:51:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767475416] [2024-11-20 14:51:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767475416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:51:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891534567] [2024-11-20 14:51:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:03,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:51:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:51:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:51:03,616 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:03,737 INFO L93 Difference]: Finished difference Result 254 states and 279 transitions. [2024-11-20 14:51:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:51:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-20 14:51:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:03,739 INFO L225 Difference]: With dead ends: 254 [2024-11-20 14:51:03,740 INFO L226 Difference]: Without dead ends: 254 [2024-11-20 14:51:03,740 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 [2024-11-20 14:51:03,741 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:03,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 451 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-20 14:51:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-20 14:51:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 141 states have (on average 1.8581560283687943) internal successors, (262), 251 states have internal predecessors, (262), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 279 transitions. [2024-11-20 14:51:03,753 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 279 transitions. Word has length 11 [2024-11-20 14:51:03,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:03,754 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 279 transitions. [2024-11-20 14:51:03,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 279 transitions. [2024-11-20 14:51:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-20 14:51:03,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:03,755 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:03,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 14:51:03,755 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:03,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash 341691987, now seen corresponding path program 1 times [2024-11-20 14:51:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:03,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120530786] [2024-11-20 14:51:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:03,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:03,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120530786] [2024-11-20 14:51:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120530786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:51:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460693940] [2024-11-20 14:51:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:03,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:51:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:51:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:51:03,850 INFO L87 Difference]: Start difference. First operand 254 states and 279 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-11-20 14:51:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:03,920 INFO L93 Difference]: Finished difference Result 306 states and 342 transitions. [2024-11-20 14:51:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:51:03,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2024-11-20 14:51:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:03,924 INFO L225 Difference]: With dead ends: 306 [2024-11-20 14:51:03,925 INFO L226 Difference]: Without dead ends: 306 [2024-11-20 14:51:03,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:03,925 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 114 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:03,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 724 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-20 14:51:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 254. [2024-11-20 14:51:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 141 states have (on average 1.851063829787234) internal successors, (261), 251 states have internal predecessors, (261), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 278 transitions. [2024-11-20 14:51:03,937 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 278 transitions. Word has length 17 [2024-11-20 14:51:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:03,937 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 278 transitions. [2024-11-20 14:51:03,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-11-20 14:51:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 278 transitions. [2024-11-20 14:51:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 14:51:03,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:03,940 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:03,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 14:51:03,940 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:03,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1948105645, now seen corresponding path program 1 times [2024-11-20 14:51:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391547269] [2024-11-20 14:51:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:03,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391547269] [2024-11-20 14:51:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391547269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:51:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395979186] [2024-11-20 14:51:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:04,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:04,076 INFO L87 Difference]: Start difference. First operand 254 states and 278 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:04,388 INFO L93 Difference]: Finished difference Result 255 states and 281 transitions. [2024-11-20 14:51:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:51:04,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-20 14:51:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:04,390 INFO L225 Difference]: With dead ends: 255 [2024-11-20 14:51:04,390 INFO L226 Difference]: Without dead ends: 255 [2024-11-20 14:51:04,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:51:04,391 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 148 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:04,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 544 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-20 14:51:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 247. [2024-11-20 14:51:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 143 states have (on average 1.7902097902097902) internal successors, (256), 244 states have internal predecessors, (256), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 273 transitions. [2024-11-20 14:51:04,398 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 273 transitions. Word has length 19 [2024-11-20 14:51:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:04,398 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 273 transitions. [2024-11-20 14:51:04,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 273 transitions. [2024-11-20 14:51:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 14:51:04,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:04,399 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:04,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 14:51:04,399 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:04,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1948105646, now seen corresponding path program 1 times [2024-11-20 14:51:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:04,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877671123] [2024-11-20 14:51:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:04,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:04,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:04,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877671123] [2024-11-20 14:51:04,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877671123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:04,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:04,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:51:04,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627543130] [2024-11-20 14:51:04,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:04,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:04,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:04,533 INFO L87 Difference]: Start difference. First operand 247 states and 273 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:04,873 INFO L93 Difference]: Finished difference Result 334 states and 373 transitions. [2024-11-20 14:51:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:51:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-20 14:51:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:04,874 INFO L225 Difference]: With dead ends: 334 [2024-11-20 14:51:04,874 INFO L226 Difference]: Without dead ends: 334 [2024-11-20 14:51:04,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:51:04,875 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 183 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:04,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 625 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-20 14:51:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 294. [2024-11-20 14:51:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 190 states have (on average 1.731578947368421) internal successors, (329), 291 states have internal predecessors, (329), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 346 transitions. [2024-11-20 14:51:04,891 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 346 transitions. Word has length 19 [2024-11-20 14:51:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:04,891 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 346 transitions. [2024-11-20 14:51:04,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 346 transitions. [2024-11-20 14:51:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-20 14:51:04,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:04,892 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:04,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 14:51:04,893 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:04,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -465387631, now seen corresponding path program 1 times [2024-11-20 14:51:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:04,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805013977] [2024-11-20 14:51:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:04,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805013977] [2024-11-20 14:51:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805013977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:04,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:51:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213142484] [2024-11-20 14:51:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:04,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:04,963 INFO L87 Difference]: Start difference. First operand 294 states and 346 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:05,046 INFO L93 Difference]: Finished difference Result 323 states and 359 transitions. [2024-11-20 14:51:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:51:05,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-20 14:51:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:05,048 INFO L225 Difference]: With dead ends: 323 [2024-11-20 14:51:05,048 INFO L226 Difference]: Without dead ends: 323 [2024-11-20 14:51:05,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:51:05,049 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 181 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:05,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 905 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-20 14:51:05,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 293. [2024-11-20 14:51:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 290 states have internal predecessors, (326), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 342 transitions. [2024-11-20 14:51:05,055 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 342 transitions. Word has length 21 [2024-11-20 14:51:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:05,055 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 342 transitions. [2024-11-20 14:51:05,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 342 transitions. [2024-11-20 14:51:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 14:51:05,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:05,057 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:05,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 14:51:05,057 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:05,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1687564333, now seen corresponding path program 1 times [2024-11-20 14:51:05,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:05,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690193932] [2024-11-20 14:51:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690193932] [2024-11-20 14:51:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690193932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:05,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:05,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:51:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638712800] [2024-11-20 14:51:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:05,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:05,143 INFO L87 Difference]: Start difference. First operand 293 states and 342 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:05,260 INFO L93 Difference]: Finished difference Result 292 states and 339 transitions. [2024-11-20 14:51:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:51:05,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-20 14:51:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:05,262 INFO L225 Difference]: With dead ends: 292 [2024-11-20 14:51:05,262 INFO L226 Difference]: Without dead ends: 292 [2024-11-20 14:51:05,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:05,263 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 15 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:05,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 906 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-20 14:51:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2024-11-20 14:51:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 190 states have (on average 1.7052631578947368) internal successors, (324), 289 states have internal predecessors, (324), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 339 transitions. [2024-11-20 14:51:05,269 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 339 transitions. Word has length 28 [2024-11-20 14:51:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:05,269 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 339 transitions. [2024-11-20 14:51:05,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 339 transitions. [2024-11-20 14:51:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 14:51:05,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:05,270 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:05,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 14:51:05,271 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:05,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash 641781367, now seen corresponding path program 1 times [2024-11-20 14:51:05,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:05,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225395953] [2024-11-20 14:51:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225395953] [2024-11-20 14:51:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225395953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:51:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000724399] [2024-11-20 14:51:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:05,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:05,365 INFO L87 Difference]: Start difference. First operand 292 states and 339 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:05,485 INFO L93 Difference]: Finished difference Result 291 states and 336 transitions. [2024-11-20 14:51:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:51:05,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-20 14:51:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:05,487 INFO L225 Difference]: With dead ends: 291 [2024-11-20 14:51:05,487 INFO L226 Difference]: Without dead ends: 291 [2024-11-20 14:51:05,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:05,488 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 15 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:05,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 894 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-20 14:51:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-11-20 14:51:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 190 states have (on average 1.694736842105263) internal successors, (322), 288 states have internal predecessors, (322), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 336 transitions. [2024-11-20 14:51:05,494 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 336 transitions. Word has length 28 [2024-11-20 14:51:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:05,495 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 336 transitions. [2024-11-20 14:51:05,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 336 transitions. [2024-11-20 14:51:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 14:51:05,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:05,496 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:05,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 14:51:05,496 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:05,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash -89400164, now seen corresponding path program 1 times [2024-11-20 14:51:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44749650] [2024-11-20 14:51:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:05,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:05,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44749650] [2024-11-20 14:51:05,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44749650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:05,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:51:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137457301] [2024-11-20 14:51:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:05,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:51:05,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:05,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:51:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:51:05,842 INFO L87 Difference]: Start difference. First operand 291 states and 336 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:06,357 INFO L93 Difference]: Finished difference Result 320 states and 352 transitions. [2024-11-20 14:51:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:06,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-20 14:51:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:06,360 INFO L225 Difference]: With dead ends: 320 [2024-11-20 14:51:06,360 INFO L226 Difference]: Without dead ends: 320 [2024-11-20 14:51:06,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:51:06,360 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 155 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:06,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1025 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 14:51:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-20 14:51:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 292. [2024-11-20 14:51:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.6963350785340314) internal successors, (324), 289 states have internal predecessors, (324), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 338 transitions. [2024-11-20 14:51:06,366 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 338 transitions. Word has length 30 [2024-11-20 14:51:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:06,367 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 338 transitions. [2024-11-20 14:51:06,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 338 transitions. [2024-11-20 14:51:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 14:51:06,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:06,368 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:06,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 14:51:06,368 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:06,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash -89400163, now seen corresponding path program 1 times [2024-11-20 14:51:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375228534] [2024-11-20 14:51:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:06,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375228534] [2024-11-20 14:51:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375228534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:51:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372965136] [2024-11-20 14:51:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:06,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:51:06,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:51:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:51:06,738 INFO L87 Difference]: Start difference. First operand 292 states and 338 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:07,186 INFO L93 Difference]: Finished difference Result 319 states and 351 transitions. [2024-11-20 14:51:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:07,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-20 14:51:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:07,188 INFO L225 Difference]: With dead ends: 319 [2024-11-20 14:51:07,189 INFO L226 Difference]: Without dead ends: 319 [2024-11-20 14:51:07,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:51:07,191 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 154 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:07,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 894 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:51:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-20 14:51:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 292. [2024-11-20 14:51:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.6910994764397906) internal successors, (323), 289 states have internal predecessors, (323), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 337 transitions. [2024-11-20 14:51:07,198 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 337 transitions. Word has length 30 [2024-11-20 14:51:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:07,199 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 337 transitions. [2024-11-20 14:51:07,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 337 transitions. [2024-11-20 14:51:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 14:51:07,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:07,202 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:07,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 14:51:07,202 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:07,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1530249595, now seen corresponding path program 1 times [2024-11-20 14:51:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419749567] [2024-11-20 14:51:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419749567] [2024-11-20 14:51:07,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419749567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:07,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:07,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 14:51:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545018955] [2024-11-20 14:51:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:07,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:51:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:51:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:51:07,366 INFO L87 Difference]: Start difference. First operand 292 states and 337 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:07,562 INFO L93 Difference]: Finished difference Result 318 states and 349 transitions. [2024-11-20 14:51:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:51:07,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-20 14:51:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:07,564 INFO L225 Difference]: With dead ends: 318 [2024-11-20 14:51:07,564 INFO L226 Difference]: Without dead ends: 318 [2024-11-20 14:51:07,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:51:07,565 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 154 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:07,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1253 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-20 14:51:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 292. [2024-11-20 14:51:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.6858638743455496) internal successors, (322), 289 states have internal predecessors, (322), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 336 transitions. [2024-11-20 14:51:07,571 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 336 transitions. Word has length 31 [2024-11-20 14:51:07,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:07,571 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 336 transitions. [2024-11-20 14:51:07,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 336 transitions. [2024-11-20 14:51:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 14:51:07,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:07,572 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:07,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 14:51:07,573 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:07,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2006265230, now seen corresponding path program 1 times [2024-11-20 14:51:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288533351] [2024-11-20 14:51:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288533351] [2024-11-20 14:51:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288533351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:07,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 14:51:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380526629] [2024-11-20 14:51:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:07,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:51:07,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:51:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:51:07,724 INFO L87 Difference]: Start difference. First operand 292 states and 336 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:07,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:07,910 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2024-11-20 14:51:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:51:07,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-20 14:51:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:07,912 INFO L225 Difference]: With dead ends: 317 [2024-11-20 14:51:07,912 INFO L226 Difference]: Without dead ends: 317 [2024-11-20 14:51:07,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:51:07,913 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 152 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:07,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1253 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-20 14:51:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 292. [2024-11-20 14:51:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 289 states have internal predecessors, (321), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 335 transitions. [2024-11-20 14:51:07,926 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 335 transitions. Word has length 31 [2024-11-20 14:51:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:07,926 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 335 transitions. [2024-11-20 14:51:07,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 335 transitions. [2024-11-20 14:51:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 14:51:07,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:07,927 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:07,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 14:51:07,928 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2004090430, now seen corresponding path program 1 times [2024-11-20 14:51:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146221331] [2024-11-20 14:51:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:08,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:08,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146221331] [2024-11-20 14:51:08,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146221331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:08,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:08,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:51:08,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165355543] [2024-11-20 14:51:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:08,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:51:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:51:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:51:08,129 INFO L87 Difference]: Start difference. First operand 292 states and 335 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:08,613 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2024-11-20 14:51:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:08,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-20 14:51:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:08,615 INFO L225 Difference]: With dead ends: 316 [2024-11-20 14:51:08,615 INFO L226 Difference]: Without dead ends: 316 [2024-11-20 14:51:08,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:51:08,616 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 149 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:08,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1025 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:51:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-20 14:51:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 292. [2024-11-20 14:51:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.675392670157068) internal successors, (320), 289 states have internal predecessors, (320), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 334 transitions. [2024-11-20 14:51:08,622 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 334 transitions. Word has length 30 [2024-11-20 14:51:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:08,622 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 334 transitions. [2024-11-20 14:51:08,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 334 transitions. [2024-11-20 14:51:08,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 14:51:08,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:08,623 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:08,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 14:51:08,623 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:08,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2004090431, now seen corresponding path program 1 times [2024-11-20 14:51:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217930239] [2024-11-20 14:51:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217930239] [2024-11-20 14:51:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217930239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:08,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:08,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:51:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57568124] [2024-11-20 14:51:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:08,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:51:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:51:08,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:51:08,911 INFO L87 Difference]: Start difference. First operand 292 states and 334 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:09,370 INFO L93 Difference]: Finished difference Result 315 states and 345 transitions. [2024-11-20 14:51:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-20 14:51:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:09,371 INFO L225 Difference]: With dead ends: 315 [2024-11-20 14:51:09,372 INFO L226 Difference]: Without dead ends: 315 [2024-11-20 14:51:09,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:51:09,372 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 146 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:09,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 894 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:51:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-20 14:51:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 292. [2024-11-20 14:51:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.6701570680628273) internal successors, (319), 289 states have internal predecessors, (319), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 333 transitions. [2024-11-20 14:51:09,378 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 333 transitions. Word has length 30 [2024-11-20 14:51:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:09,378 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 333 transitions. [2024-11-20 14:51:09,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-20 14:51:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 333 transitions. [2024-11-20 14:51:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 14:51:09,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:09,379 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:09,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 14:51:09,380 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:09,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2050037000, now seen corresponding path program 1 times [2024-11-20 14:51:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955064553] [2024-11-20 14:51:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:09,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955064553] [2024-11-20 14:51:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955064553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:09,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:09,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 14:51:09,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801283422] [2024-11-20 14:51:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:09,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 14:51:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 14:51:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:51:09,788 INFO L87 Difference]: Start difference. First operand 292 states and 333 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:10,185 INFO L93 Difference]: Finished difference Result 314 states and 343 transitions. [2024-11-20 14:51:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-20 14:51:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:10,187 INFO L225 Difference]: With dead ends: 314 [2024-11-20 14:51:10,187 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 14:51:10,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:51:10,188 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 144 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:10,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1588 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 14:51:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 293. [2024-11-20 14:51:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 192 states have (on average 1.6666666666666667) internal successors, (320), 290 states have internal predecessors, (320), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 334 transitions. [2024-11-20 14:51:10,193 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 334 transitions. Word has length 35 [2024-11-20 14:51:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:10,193 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 334 transitions. [2024-11-20 14:51:10,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 334 transitions. [2024-11-20 14:51:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 14:51:10,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:10,194 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:10,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 14:51:10,195 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:10,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash 439445211, now seen corresponding path program 1 times [2024-11-20 14:51:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:10,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639412229] [2024-11-20 14:51:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:10,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:10,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:10,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639412229] [2024-11-20 14:51:10,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639412229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:10,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:10,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 14:51:10,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025377317] [2024-11-20 14:51:10,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:10,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 14:51:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 14:51:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:51:10,566 INFO L87 Difference]: Start difference. First operand 293 states and 334 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:11,009 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-11-20 14:51:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:11,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-20 14:51:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:11,010 INFO L225 Difference]: With dead ends: 313 [2024-11-20 14:51:11,010 INFO L226 Difference]: Without dead ends: 313 [2024-11-20 14:51:11,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:51:11,011 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 142 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:11,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1798 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:51:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-20 14:51:11,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 293. [2024-11-20 14:51:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 192 states have (on average 1.6614583333333333) internal successors, (319), 290 states have internal predecessors, (319), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 333 transitions. [2024-11-20 14:51:11,016 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 333 transitions. Word has length 35 [2024-11-20 14:51:11,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:11,017 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 333 transitions. [2024-11-20 14:51:11,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 333 transitions. [2024-11-20 14:51:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 14:51:11,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:11,018 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:11,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 14:51:11,019 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:11,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash 431056901, now seen corresponding path program 1 times [2024-11-20 14:51:11,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:11,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081499645] [2024-11-20 14:51:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081499645] [2024-11-20 14:51:11,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081499645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921229541] [2024-11-20 14:51:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:11,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:11,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:11,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:11,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 14:51:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:11,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 14:51:11,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:11,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:11,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:11,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 14:51:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:11,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:11,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921229541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:11,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:11,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 15 [2024-11-20 14:51:11,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806800705] [2024-11-20 14:51:11,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:11,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 14:51:11,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 14:51:11,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-20 14:51:11,832 INFO L87 Difference]: Start difference. First operand 293 states and 333 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 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 14:51:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:12,182 INFO L93 Difference]: Finished difference Result 367 states and 414 transitions. [2024-11-20 14:51:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:51:12,183 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 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 35 [2024-11-20 14:51:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:12,184 INFO L225 Difference]: With dead ends: 367 [2024-11-20 14:51:12,184 INFO L226 Difference]: Without dead ends: 367 [2024-11-20 14:51:12,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:51:12,185 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 76 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:12,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2423 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-20 14:51:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 309. [2024-11-20 14:51:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 208 states have (on average 1.6153846153846154) internal successors, (336), 306 states have internal predecessors, (336), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 350 transitions. [2024-11-20 14:51:12,191 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 350 transitions. Word has length 35 [2024-11-20 14:51:12,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:12,191 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 350 transitions. [2024-11-20 14:51:12,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 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 14:51:12,191 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 350 transitions. [2024-11-20 14:51:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 14:51:12,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:12,192 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:12,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 14:51:12,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-20 14:51:12,397 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:12,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1450889018, now seen corresponding path program 1 times [2024-11-20 14:51:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475524833] [2024-11-20 14:51:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:12,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:12,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475524833] [2024-11-20 14:51:12,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475524833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:12,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:12,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:51:12,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316717121] [2024-11-20 14:51:12,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:12,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:51:12,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:51:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:12,503 INFO L87 Difference]: Start difference. First operand 309 states and 350 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:12,842 INFO L93 Difference]: Finished difference Result 311 states and 354 transitions. [2024-11-20 14:51:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:51:12,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-20 14:51:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:12,843 INFO L225 Difference]: With dead ends: 311 [2024-11-20 14:51:12,844 INFO L226 Difference]: Without dead ends: 311 [2024-11-20 14:51:12,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:12,844 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 164 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:12,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 642 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-20 14:51:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2024-11-20 14:51:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 210 states have (on average 1.6095238095238096) internal successors, (338), 306 states have internal predecessors, (338), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 352 transitions. [2024-11-20 14:51:12,851 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 352 transitions. Word has length 37 [2024-11-20 14:51:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:12,851 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 352 transitions. [2024-11-20 14:51:12,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 352 transitions. [2024-11-20 14:51:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 14:51:12,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:12,852 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:12,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 14:51:12,852 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:12,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1450889019, now seen corresponding path program 1 times [2024-11-20 14:51:12,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:12,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433760085] [2024-11-20 14:51:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:12,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433760085] [2024-11-20 14:51:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433760085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:13,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:51:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187778607] [2024-11-20 14:51:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:13,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:13,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:13,004 INFO L87 Difference]: Start difference. First operand 309 states and 352 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 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) [2024-11-20 14:51:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:13,324 INFO L93 Difference]: Finished difference Result 336 states and 369 transitions. [2024-11-20 14:51:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:51:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 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) Word has length 37 [2024-11-20 14:51:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:13,326 INFO L225 Difference]: With dead ends: 336 [2024-11-20 14:51:13,326 INFO L226 Difference]: Without dead ends: 336 [2024-11-20 14:51:13,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:13,327 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 89 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:13,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 604 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-20 14:51:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315. [2024-11-20 14:51:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 216 states have (on average 1.6018518518518519) internal successors, (346), 312 states have internal predecessors, (346), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 360 transitions. [2024-11-20 14:51:13,332 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 360 transitions. Word has length 37 [2024-11-20 14:51:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:13,333 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 360 transitions. [2024-11-20 14:51:13,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 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) [2024-11-20 14:51:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 360 transitions. [2024-11-20 14:51:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 14:51:13,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:13,333 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:13,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 14:51:13,334 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:13,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1557976633, now seen corresponding path program 1 times [2024-11-20 14:51:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895841638] [2024-11-20 14:51:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:13,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:13,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895841638] [2024-11-20 14:51:13,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895841638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:13,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:13,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:51:13,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353363215] [2024-11-20 14:51:13,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:13,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:51:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:51:13,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:51:13,385 INFO L87 Difference]: Start difference. First operand 315 states and 360 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 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) [2024-11-20 14:51:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:13,565 INFO L93 Difference]: Finished difference Result 312 states and 354 transitions. [2024-11-20 14:51:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:51:13,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 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) Word has length 39 [2024-11-20 14:51:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:13,567 INFO L225 Difference]: With dead ends: 312 [2024-11-20 14:51:13,567 INFO L226 Difference]: Without dead ends: 312 [2024-11-20 14:51:13,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:13,568 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 49 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:13,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 501 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-20 14:51:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-11-20 14:51:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.5740740740740742) internal successors, (340), 309 states have internal predecessors, (340), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 354 transitions. [2024-11-20 14:51:13,573 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 354 transitions. Word has length 39 [2024-11-20 14:51:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:13,574 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 354 transitions. [2024-11-20 14:51:13,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 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) [2024-11-20 14:51:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 354 transitions. [2024-11-20 14:51:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 14:51:13,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:13,574 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:13,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 14:51:13,575 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:13,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1557976632, now seen corresponding path program 1 times [2024-11-20 14:51:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798801318] [2024-11-20 14:51:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:13,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:13,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798801318] [2024-11-20 14:51:13,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798801318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:13,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:13,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:51:13,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243788928] [2024-11-20 14:51:13,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:13,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:13,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:13,712 INFO L87 Difference]: Start difference. First operand 312 states and 354 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 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) [2024-11-20 14:51:14,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:14,008 INFO L93 Difference]: Finished difference Result 322 states and 355 transitions. [2024-11-20 14:51:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:51:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 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) Word has length 39 [2024-11-20 14:51:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:14,010 INFO L225 Difference]: With dead ends: 322 [2024-11-20 14:51:14,010 INFO L226 Difference]: Without dead ends: 322 [2024-11-20 14:51:14,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:51:14,011 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 83 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:14,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 611 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-20 14:51:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 312. [2024-11-20 14:51:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.5601851851851851) internal successors, (337), 309 states have internal predecessors, (337), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 351 transitions. [2024-11-20 14:51:14,018 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 351 transitions. Word has length 39 [2024-11-20 14:51:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:14,018 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 351 transitions. [2024-11-20 14:51:14,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 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) [2024-11-20 14:51:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 351 transitions. [2024-11-20 14:51:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 14:51:14,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:14,019 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:14,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 14:51:14,020 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:14,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1559957943, now seen corresponding path program 1 times [2024-11-20 14:51:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:14,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086380956] [2024-11-20 14:51:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086380956] [2024-11-20 14:51:14,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086380956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:14,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:14,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:51:14,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762265444] [2024-11-20 14:51:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:14,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:51:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:51:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:14,091 INFO L87 Difference]: Start difference. First operand 312 states and 351 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2024-11-20 14:51:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:14,195 INFO L93 Difference]: Finished difference Result 381 states and 423 transitions. [2024-11-20 14:51:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:51:14,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) Word has length 39 [2024-11-20 14:51:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:14,198 INFO L225 Difference]: With dead ends: 381 [2024-11-20 14:51:14,198 INFO L226 Difference]: Without dead ends: 381 [2024-11-20 14:51:14,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:51:14,198 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 230 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:14,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1037 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-20 14:51:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 312. [2024-11-20 14:51:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.5555555555555556) internal successors, (336), 309 states have internal predecessors, (336), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 350 transitions. [2024-11-20 14:51:14,205 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 350 transitions. Word has length 39 [2024-11-20 14:51:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:14,206 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 350 transitions. [2024-11-20 14:51:14,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2024-11-20 14:51:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 350 transitions. [2024-11-20 14:51:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 14:51:14,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:14,207 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:14,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-20 14:51:14,207 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:14,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1729224053, now seen corresponding path program 1 times [2024-11-20 14:51:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:14,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602783461] [2024-11-20 14:51:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602783461] [2024-11-20 14:51:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602783461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:51:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677869155] [2024-11-20 14:51:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:14,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:51:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:51:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:14,273 INFO L87 Difference]: Start difference. First operand 312 states and 350 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:14,359 INFO L93 Difference]: Finished difference Result 323 states and 355 transitions. [2024-11-20 14:51:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:51:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-20 14:51:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:14,361 INFO L225 Difference]: With dead ends: 323 [2024-11-20 14:51:14,361 INFO L226 Difference]: Without dead ends: 323 [2024-11-20 14:51:14,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:51:14,361 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 173 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:14,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1077 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-20 14:51:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 312. [2024-11-20 14:51:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.5509259259259258) internal successors, (335), 309 states have internal predecessors, (335), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 349 transitions. [2024-11-20 14:51:14,367 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 349 transitions. Word has length 41 [2024-11-20 14:51:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:14,367 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 349 transitions. [2024-11-20 14:51:14,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 349 transitions. [2024-11-20 14:51:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 14:51:14,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:14,368 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:14,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 14:51:14,368 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:14,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -232116218, now seen corresponding path program 1 times [2024-11-20 14:51:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816156775] [2024-11-20 14:51:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:14,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816156775] [2024-11-20 14:51:14,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816156775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:14,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493188072] [2024-11-20 14:51:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:14,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:14,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:14,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 14:51:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:14,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-20 14:51:14,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:14,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:14,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:15,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493188072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:15,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:15,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2024-11-20 14:51:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292152991] [2024-11-20 14:51:15,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:15,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 14:51:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 14:51:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-20 14:51:15,234 INFO L87 Difference]: Start difference. First operand 312 states and 349 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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 14:51:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:15,550 INFO L93 Difference]: Finished difference Result 363 states and 404 transitions. [2024-11-20 14:51:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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 41 [2024-11-20 14:51:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:15,553 INFO L225 Difference]: With dead ends: 363 [2024-11-20 14:51:15,553 INFO L226 Difference]: Without dead ends: 363 [2024-11-20 14:51:15,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-20 14:51:15,554 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 72 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:15,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 2431 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-20 14:51:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 327. [2024-11-20 14:51:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 231 states have (on average 1.5151515151515151) internal successors, (350), 324 states have internal predecessors, (350), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 364 transitions. [2024-11-20 14:51:15,564 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 364 transitions. Word has length 41 [2024-11-20 14:51:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:15,565 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 364 transitions. [2024-11-20 14:51:15,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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 14:51:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 364 transitions. [2024-11-20 14:51:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 14:51:15,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:15,566 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:15,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 14:51:15,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-20 14:51:15,771 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:15,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1019662957, now seen corresponding path program 1 times [2024-11-20 14:51:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:15,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481236385] [2024-11-20 14:51:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:16,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481236385] [2024-11-20 14:51:16,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481236385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467975974] [2024-11-20 14:51:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:16,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:16,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 14:51:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:16,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 14:51:16,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:16,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:16,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:16,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:16,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467975974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:16,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:16,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 13 [2024-11-20 14:51:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719518740] [2024-11-20 14:51:16,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:16,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 14:51:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 14:51:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:51:16,729 INFO L87 Difference]: Start difference. First operand 327 states and 364 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:16,984 INFO L93 Difference]: Finished difference Result 362 states and 402 transitions. [2024-11-20 14:51:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:51:16,985 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-20 14:51:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:16,986 INFO L225 Difference]: With dead ends: 362 [2024-11-20 14:51:16,986 INFO L226 Difference]: Without dead ends: 362 [2024-11-20 14:51:16,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-20 14:51:16,987 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 76 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:16,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1984 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-20 14:51:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 332. [2024-11-20 14:51:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 236 states have (on average 1.5042372881355932) internal successors, (355), 329 states have internal predecessors, (355), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2024-11-20 14:51:16,998 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 44 [2024-11-20 14:51:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:16,999 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2024-11-20 14:51:16,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2024-11-20 14:51:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 14:51:17,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:17,000 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:17,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 14:51:17,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:17,205 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:17,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1650375377, now seen corresponding path program 2 times [2024-11-20 14:51:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134215569] [2024-11-20 14:51:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:17,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:17,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134215569] [2024-11-20 14:51:17,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134215569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129570834] [2024-11-20 14:51:17,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:51:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:17,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:17,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 14:51:17,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:51:17,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:51:17,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 14:51:17,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:17,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:51:17,881 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 14:51:17,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 14:51:17,911 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 14:51:17,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 14:51:17,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 14:51:18,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 14:51:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:18,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:18,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-20 14:51:18,442 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 24 treesize of output 20 [2024-11-20 14:51:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129570834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:18,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 25 [2024-11-20 14:51:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810667047] [2024-11-20 14:51:18,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:18,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 14:51:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 14:51:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-20 14:51:18,663 INFO L87 Difference]: Start difference. First operand 332 states and 369 transitions. Second operand has 26 states, 25 states have (on average 4.36) internal successors, (109), 26 states have internal predecessors, (109), 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 14:51:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:19,492 INFO L93 Difference]: Finished difference Result 367 states and 408 transitions. [2024-11-20 14:51:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 14:51:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 26 states have internal predecessors, (109), 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 46 [2024-11-20 14:51:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:19,497 INFO L225 Difference]: With dead ends: 367 [2024-11-20 14:51:19,497 INFO L226 Difference]: Without dead ends: 367 [2024-11-20 14:51:19,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 14:51:19,498 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 569 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:19,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1638 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 14:51:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-20 14:51:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 334. [2024-11-20 14:51:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 238 states have (on average 1.504201680672269) internal successors, (358), 331 states have internal predecessors, (358), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 372 transitions. [2024-11-20 14:51:19,504 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 372 transitions. Word has length 46 [2024-11-20 14:51:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:19,504 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 372 transitions. [2024-11-20 14:51:19,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 26 states have internal predecessors, (109), 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 14:51:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 372 transitions. [2024-11-20 14:51:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 14:51:19,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:19,505 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:19,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 14:51:19,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:19,710 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:19,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1650375376, now seen corresponding path program 1 times [2024-11-20 14:51:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:19,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084627696] [2024-11-20 14:51:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:20,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:20,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084627696] [2024-11-20 14:51:20,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084627696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:20,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606113374] [2024-11-20 14:51:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:20,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:20,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:20,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:20,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 14:51:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:20,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-20 14:51:20,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:20,575 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 [2024-11-20 14:51:20,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:51:20,642 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 14:51:20,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-20 14:51:20,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:51:20,736 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 14:51:20,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 14:51:20,756 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-20 14:51:20,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-20 14:51:20,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 14:51:20,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-20 14:51:20,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:21,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2024-11-20 14:51:21,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 14:51:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:21,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606113374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:21,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2024-11-20 14:51:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480456145] [2024-11-20 14:51:21,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:21,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-20 14:51:21,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-20 14:51:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-11-20 14:51:21,965 INFO L87 Difference]: Start difference. First operand 334 states and 372 transitions. Second operand has 31 states, 30 states have (on average 4.133333333333334) internal successors, (124), 31 states have internal predecessors, (124), 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 14:51:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:24,058 INFO L93 Difference]: Finished difference Result 411 states and 452 transitions. [2024-11-20 14:51:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 14:51:24,058 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.133333333333334) internal successors, (124), 31 states have internal predecessors, (124), 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 46 [2024-11-20 14:51:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:24,060 INFO L225 Difference]: With dead ends: 411 [2024-11-20 14:51:24,060 INFO L226 Difference]: Without dead ends: 411 [2024-11-20 14:51:24,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=327, Invalid=1835, Unknown=0, NotChecked=0, Total=2162 [2024-11-20 14:51:24,061 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 814 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:24,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 3048 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-20 14:51:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-20 14:51:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 350. [2024-11-20 14:51:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 257 states have (on average 1.4708171206225682) internal successors, (378), 347 states have internal predecessors, (378), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 392 transitions. [2024-11-20 14:51:24,075 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 392 transitions. Word has length 46 [2024-11-20 14:51:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:24,076 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 392 transitions. [2024-11-20 14:51:24,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.133333333333334) internal successors, (124), 31 states have internal predecessors, (124), 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 14:51:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 392 transitions. [2024-11-20 14:51:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-20 14:51:24,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:24,077 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:24,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 14:51:24,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:24,279 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:24,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash 783336676, now seen corresponding path program 1 times [2024-11-20 14:51:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571725706] [2024-11-20 14:51:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:24,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571725706] [2024-11-20 14:51:24,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571725706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:24,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:24,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:51:24,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996316691] [2024-11-20 14:51:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:24,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 14:51:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 14:51:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:51:24,451 INFO L87 Difference]: Start difference. First operand 350 states and 392 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:24,630 INFO L93 Difference]: Finished difference Result 360 states and 395 transitions. [2024-11-20 14:51:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:51:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-20 14:51:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:24,631 INFO L225 Difference]: With dead ends: 360 [2024-11-20 14:51:24,631 INFO L226 Difference]: Without dead ends: 360 [2024-11-20 14:51:24,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-20 14:51:24,632 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 111 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:24,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1267 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-20 14:51:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 350. [2024-11-20 14:51:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 257 states have (on average 1.4669260700389104) internal successors, (377), 347 states have internal predecessors, (377), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 391 transitions. [2024-11-20 14:51:24,638 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 391 transitions. Word has length 47 [2024-11-20 14:51:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:24,638 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 391 transitions. [2024-11-20 14:51:24,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 391 transitions. [2024-11-20 14:51:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 14:51:24,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:24,639 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:24,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-20 14:51:24,639 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:24,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1490095574, now seen corresponding path program 1 times [2024-11-20 14:51:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:24,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089103372] [2024-11-20 14:51:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089103372] [2024-11-20 14:51:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089103372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:24,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 14:51:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618429207] [2024-11-20 14:51:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:24,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 14:51:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 14:51:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:51:24,773 INFO L87 Difference]: Start difference. First operand 350 states and 391 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:25,115 INFO L93 Difference]: Finished difference Result 382 states and 426 transitions. [2024-11-20 14:51:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:51:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-20 14:51:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:25,117 INFO L225 Difference]: With dead ends: 382 [2024-11-20 14:51:25,118 INFO L226 Difference]: Without dead ends: 382 [2024-11-20 14:51:25,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:51:25,121 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 62 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:25,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1188 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:51:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-20 14:51:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 365. [2024-11-20 14:51:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 274 states have (on average 1.4343065693430657) internal successors, (393), 362 states have internal predecessors, (393), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 407 transitions. [2024-11-20 14:51:25,128 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 407 transitions. Word has length 48 [2024-11-20 14:51:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:25,129 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 407 transitions. [2024-11-20 14:51:25,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 407 transitions. [2024-11-20 14:51:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 14:51:25,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:25,130 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:25,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-20 14:51:25,130 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:25,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1490095573, now seen corresponding path program 1 times [2024-11-20 14:51:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540656597] [2024-11-20 14:51:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540656597] [2024-11-20 14:51:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540656597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:25,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 14:51:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030790583] [2024-11-20 14:51:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:25,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 14:51:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 14:51:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-20 14:51:25,501 INFO L87 Difference]: Start difference. First operand 365 states and 407 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 11 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) [2024-11-20 14:51:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:25,991 INFO L93 Difference]: Finished difference Result 395 states and 436 transitions. [2024-11-20 14:51:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:51:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 11 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) Word has length 48 [2024-11-20 14:51:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:25,993 INFO L225 Difference]: With dead ends: 395 [2024-11-20 14:51:25,993 INFO L226 Difference]: Without dead ends: 395 [2024-11-20 14:51:25,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:51:25,993 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 144 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:25,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1604 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:51:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-20 14:51:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 368. [2024-11-20 14:51:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 277 states have (on average 1.4296028880866427) internal successors, (396), 365 states have internal predecessors, (396), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 410 transitions. [2024-11-20 14:51:25,999 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 410 transitions. Word has length 48 [2024-11-20 14:51:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:25,999 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 410 transitions. [2024-11-20 14:51:25,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 11 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) [2024-11-20 14:51:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 410 transitions. [2024-11-20 14:51:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 14:51:26,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:26,000 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:26,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-20 14:51:26,001 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:26,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1983673006, now seen corresponding path program 1 times [2024-11-20 14:51:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140526615] [2024-11-20 14:51:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 14:51:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140526615] [2024-11-20 14:51:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140526615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915172389] [2024-11-20 14:51:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:26,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:26,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:26,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 14:51:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:26,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 14:51:26,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:26,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:51:26,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:51:26,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:51:26,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:51:26,434 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:51:26,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:51:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 14:51:26,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 14:51:26,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915172389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:26,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:26,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 8 [2024-11-20 14:51:26,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144901423] [2024-11-20 14:51:26,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:26,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:51:26,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:51:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:51:26,547 INFO L87 Difference]: Start difference. First operand 368 states and 410 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:26,733 INFO L93 Difference]: Finished difference Result 366 states and 404 transitions. [2024-11-20 14:51:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:51:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-20 14:51:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:26,734 INFO L225 Difference]: With dead ends: 366 [2024-11-20 14:51:26,734 INFO L226 Difference]: Without dead ends: 366 [2024-11-20 14:51:26,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:51:26,735 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 815 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:26,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 413 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-20 14:51:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2024-11-20 14:51:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 277 states have (on average 1.4151624548736461) internal successors, (392), 363 states have internal predecessors, (392), 10 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 404 transitions. [2024-11-20 14:51:26,741 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 404 transitions. Word has length 52 [2024-11-20 14:51:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:26,741 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 404 transitions. [2024-11-20 14:51:26,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 404 transitions. [2024-11-20 14:51:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 14:51:26,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:26,742 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:26,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 14:51:26,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:26,943 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:26,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:26,943 INFO L85 PathProgramCache]: Analyzing trace with hash -171571792, now seen corresponding path program 2 times [2024-11-20 14:51:26,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305205588] [2024-11-20 14:51:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:27,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305205588] [2024-11-20 14:51:27,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305205588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073965980] [2024-11-20 14:51:27,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:51:27,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:27,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:27,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:27,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 14:51:27,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:51:27,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:51:27,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 14:51:27,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:27,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-20 14:51:27,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-20 14:51:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:51:27,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:51:27,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073965980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:27,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:51:27,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-20 14:51:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536270506] [2024-11-20 14:51:27,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:27,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:51:27,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:51:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:51:27,589 INFO L87 Difference]: Start difference. First operand 366 states and 404 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 14:51:27,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:27,770 INFO L93 Difference]: Finished difference Result 383 states and 422 transitions. [2024-11-20 14:51:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:51:27,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 52 [2024-11-20 14:51:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:27,771 INFO L225 Difference]: With dead ends: 383 [2024-11-20 14:51:27,771 INFO L226 Difference]: Without dead ends: 383 [2024-11-20 14:51:27,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:51:27,772 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 58 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:27,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1033 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-20 14:51:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 366. [2024-11-20 14:51:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 277 states have (on average 1.4115523465703972) internal successors, (391), 363 states have internal predecessors, (391), 10 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 403 transitions. [2024-11-20 14:51:27,779 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 403 transitions. Word has length 52 [2024-11-20 14:51:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:27,779 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 403 transitions. [2024-11-20 14:51:27,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 14:51:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 403 transitions. [2024-11-20 14:51:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 14:51:27,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:27,780 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:27,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 14:51:27,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:27,984 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:27,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:27,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1248991168, now seen corresponding path program 1 times [2024-11-20 14:51:27,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:27,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068845992] [2024-11-20 14:51:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068845992] [2024-11-20 14:51:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068845992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:28,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 14:51:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053300300] [2024-11-20 14:51:28,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:28,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 14:51:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 14:51:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:51:28,270 INFO L87 Difference]: Start difference. First operand 366 states and 403 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:28,615 INFO L93 Difference]: Finished difference Result 373 states and 410 transitions. [2024-11-20 14:51:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 14:51:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-20 14:51:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:28,617 INFO L225 Difference]: With dead ends: 373 [2024-11-20 14:51:28,617 INFO L226 Difference]: Without dead ends: 373 [2024-11-20 14:51:28,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:51:28,618 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 46 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:28,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1818 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:51:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-20 14:51:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 365. [2024-11-20 14:51:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 276 states have (on average 1.4094202898550725) internal successors, (389), 362 states have internal predecessors, (389), 10 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 401 transitions. [2024-11-20 14:51:28,623 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 401 transitions. Word has length 52 [2024-11-20 14:51:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:28,624 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 401 transitions. [2024-11-20 14:51:28,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 401 transitions. [2024-11-20 14:51:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 14:51:28,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:28,625 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:28,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-20 14:51:28,626 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:28,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash 812393603, now seen corresponding path program 2 times [2024-11-20 14:51:28,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:28,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467033286] [2024-11-20 14:51:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:28,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:29,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:29,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467033286] [2024-11-20 14:51:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467033286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334805067] [2024-11-20 14:51:29,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:51:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:29,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:29,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 14:51:29,314 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:51:29,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:51:29,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 14:51:29,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:51:29,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:51:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334805067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:29,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:51:29,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 19 [2024-11-20 14:51:29,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678178082] [2024-11-20 14:51:29,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:29,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:51:29,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:29,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:51:29,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-20 14:51:29,456 INFO L87 Difference]: Start difference. First operand 365 states and 401 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:29,622 INFO L93 Difference]: Finished difference Result 372 states and 408 transitions. [2024-11-20 14:51:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:51:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-20 14:51:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:29,623 INFO L225 Difference]: With dead ends: 372 [2024-11-20 14:51:29,623 INFO L226 Difference]: Without dead ends: 372 [2024-11-20 14:51:29,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-20 14:51:29,624 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 55 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:29,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1235 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-20 14:51:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 345. [2024-11-20 14:51:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.4375) internal successors, (368), 342 states have internal predecessors, (368), 10 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 380 transitions. [2024-11-20 14:51:29,629 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 380 transitions. Word has length 55 [2024-11-20 14:51:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:29,629 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 380 transitions. [2024-11-20 14:51:29,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 380 transitions. [2024-11-20 14:51:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 14:51:29,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:29,630 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:29,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 14:51:29,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-20 14:51:29,831 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:29,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1396585463, now seen corresponding path program 1 times [2024-11-20 14:51:29,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:29,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068434579] [2024-11-20 14:51:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:51:29,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:29,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068434579] [2024-11-20 14:51:29,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068434579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:51:29,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:51:29,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:51:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903474356] [2024-11-20 14:51:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:51:29,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:51:29,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:51:29,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:51:29,905 INFO L87 Difference]: Start difference. First operand 345 states and 380 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:29,980 INFO L93 Difference]: Finished difference Result 344 states and 377 transitions. [2024-11-20 14:51:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:51:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-20 14:51:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:29,982 INFO L225 Difference]: With dead ends: 344 [2024-11-20 14:51:29,982 INFO L226 Difference]: Without dead ends: 344 [2024-11-20 14:51:29,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:51:29,982 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 3 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:29,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 879 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:51:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-20 14:51:29,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-20 14:51:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.4296875) internal successors, (366), 341 states have internal predecessors, (366), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 377 transitions. [2024-11-20 14:51:29,987 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 377 transitions. Word has length 55 [2024-11-20 14:51:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:29,988 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 377 transitions. [2024-11-20 14:51:29,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:51:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 377 transitions. [2024-11-20 14:51:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 14:51:29,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:29,988 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:29,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-20 14:51:29,989 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:29,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash -889279014, now seen corresponding path program 1 times [2024-11-20 14:51:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:29,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687768059] [2024-11-20 14:51:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:29,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:31,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687768059] [2024-11-20 14:51:31,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687768059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:31,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086325736] [2024-11-20 14:51:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:31,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:31,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:31,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 14:51:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:31,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-20 14:51:31,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:31,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:51:31,440 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 14:51:31,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-20 14:51:31,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 14:51:31,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-20 14:51:31,601 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-20 14:51:31,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-20 14:51:31,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-20 14:51:31,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-20 14:51:31,744 INFO L349 Elim1Store]: treesize reduction 72, result has 33.3 percent of original size [2024-11-20 14:51:31,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 48 [2024-11-20 14:51:31,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2024-11-20 14:51:31,907 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-20 14:51:31,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 57 [2024-11-20 14:51:31,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 14:51:32,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 14:51:33,018 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:51:33,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 46 [2024-11-20 14:51:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:33,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:34,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:34,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2024-11-20 14:51:34,496 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:51:34,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:34,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 108 [2024-11-20 14:51:34,512 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 46 treesize of output 44 [2024-11-20 14:51:34,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:34,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2024-11-20 14:51:34,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:34,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 238 [2024-11-20 14:51:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:39,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086325736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:51:39,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:51:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 19] total 52 [2024-11-20 14:51:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124720197] [2024-11-20 14:51:39,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:51:39,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-20 14:51:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:51:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-20 14:51:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2572, Unknown=5, NotChecked=0, Total=2756 [2024-11-20 14:51:39,653 INFO L87 Difference]: Start difference. First operand 344 states and 377 transitions. Second operand has 53 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 53 states have internal predecessors, (161), 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 14:51:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:51:44,339 INFO L93 Difference]: Finished difference Result 402 states and 433 transitions. [2024-11-20 14:51:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 14:51:44,340 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 53 states have internal predecessors, (161), 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 57 [2024-11-20 14:51:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:51:44,342 INFO L225 Difference]: With dead ends: 402 [2024-11-20 14:51:44,342 INFO L226 Difference]: Without dead ends: 402 [2024-11-20 14:51:44,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=481, Invalid=4344, Unknown=5, NotChecked=0, Total=4830 [2024-11-20 14:51:44,344 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 743 mSDsluCounter, 5217 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 4441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-20 14:51:44,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 5467 Invalid, 4441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-20 14:51:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-20 14:51:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 345. [2024-11-20 14:51:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 257 states have (on average 1.4319066147859922) internal successors, (368), 342 states have internal predecessors, (368), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:51:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 379 transitions. [2024-11-20 14:51:44,356 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 379 transitions. Word has length 57 [2024-11-20 14:51:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:51:44,357 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 379 transitions. [2024-11-20 14:51:44,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 53 states have internal predecessors, (161), 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 14:51:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 379 transitions. [2024-11-20 14:51:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 14:51:44,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:51:44,357 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:51:44,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 14:51:44,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:44,558 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [merge_single_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, merge_single_nodeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2024-11-20 14:51:44,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:51:44,559 INFO L85 PathProgramCache]: Analyzing trace with hash -889279013, now seen corresponding path program 1 times [2024-11-20 14:51:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:51:44,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78778829] [2024-11-20 14:51:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:51:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:51:45,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78778829] [2024-11-20 14:51:45,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78778829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:51:45,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091970608] [2024-11-20 14:51:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:51:45,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:51:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:51:45,934 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:51:45,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 14:51:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:51:46,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-20 14:51:46,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:51:46,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:51:46,121 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 [2024-11-20 14:51:46,170 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 14:51:46,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 14:51:46,192 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 14:51:46,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-20 14:51:46,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 14:51:46,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 14:51:46,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2024-11-20 14:51:46,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-20 14:51:46,418 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-20 14:51:46,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-20 14:51:46,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-20 14:51:46,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2024-11-20 14:51:46,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 14:51:46,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2024-11-20 14:51:46,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 14:51:46,608 INFO L349 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2024-11-20 14:51:46,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2024-11-20 14:51:46,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-20 14:51:46,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2024-11-20 14:51:46,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 14:51:46,776 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-20 14:51:46,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 52 [2024-11-20 14:51:46,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:51:46,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 14:51:47,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:51:47,860 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:51:47,869 INFO L349 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2024-11-20 14:51:47,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 53 [2024-11-20 14:51:47,883 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 14:51:47,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2024-11-20 14:51:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:51:47,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:51:48,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:48,995 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2024-11-20 14:51:49,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:49,009 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2024-11-20 14:51:55,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:55,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 76 [2024-11-20 14:51:55,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:55,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 63 [2024-11-20 14:51:55,528 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:51:55,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:55,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 156 [2024-11-20 14:51:55,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:55,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 486 treesize of output 474 [2024-11-20 14:51:55,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:51:55,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 118 [2024-11-20 14:51:55,584 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 52 treesize of output 50 [2024-11-20 14:51:55,596 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 50 treesize of output 48 [2024-11-20 14:51:55,663 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 84 treesize of output 82 [2024-11-20 14:51:55,855 INFO L349 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2024-11-20 14:51:55,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 529 treesize of output 535 [2024-11-20 14:52:04,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:52:04,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2024-11-20 14:52:04,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:52:04,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 134 [2024-11-20 14:52:04,908 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 23 treesize of output 21 [2024-11-20 14:52:04,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:52:04,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2024-11-20 14:52:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:52:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091970608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:52:11,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:52:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 18] total 49 [2024-11-20 14:52:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419550074] [2024-11-20 14:52:11,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:52:11,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-20 14:52:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:52:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-20 14:52:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2294, Unknown=8, NotChecked=0, Total=2450 [2024-11-20 14:52:11,771 INFO L87 Difference]: Start difference. First operand 345 states and 379 transitions. Second operand has 50 states, 49 states have (on average 3.36734693877551) internal successors, (165), 50 states have internal predecessors, (165), 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)