./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.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/uthash-2.0.2/uthash_SAX_nondet_test2-1.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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:06:00,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:06:00,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:06:00,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:06:00,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:06:00,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:06:00,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:06:00,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:06:00,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:06:00,661 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:06:00,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:06:00,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:06:00,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:06:00,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:06:00,665 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:06:00,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:06:00,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:06:00,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:06:00,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:06:00,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:06:00,666 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:06:00,666 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:06:00,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:06:00,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:06:00,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:06:00,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:06:00,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:06:00,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:06:00,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:06:00,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:06:00,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:06:00,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:06:00,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:06:00,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:06:00,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:06:00,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:06:00,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-20 17:06:00,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:06:00,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:06:00,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:06:00,926 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:06:00,926 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:06:00,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i [2024-11-20 17:06:02,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:06:02,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:06:02,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i [2024-11-20 17:06:02,558 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184e0e295/95eb4500d9d84affb5dc5524485e0811/FLAG5f7775ac1 [2024-11-20 17:06:02,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184e0e295/95eb4500d9d84affb5dc5524485e0811 [2024-11-20 17:06:02,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:06:02,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:06:02,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:06:02,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:06:02,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:06:02,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:06:02" (1/1) ... [2024-11-20 17:06:02,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44494a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:02, skipping insertion in model container [2024-11-20 17:06:02,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:06:02" (1/1) ... [2024-11-20 17:06:02,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:06:03,304 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,338 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,343 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,348 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,353 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,385 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,385 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,387 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,388 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:06:03,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:06:03,405 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:06:03,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:06:03,522 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:06:03,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03 WrapperNode [2024-11-20 17:06:03,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:06:03,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:06:03,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:06:03,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:06:03,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,611 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1289 [2024-11-20 17:06:03,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:06:03,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:06:03,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:06:03,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:06:03,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,712 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 34, 170]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 4, 42]. [2024-11-20 17:06:03,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:06:03,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:06:03,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:06:03,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:06:03,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (1/1) ... [2024-11-20 17:06:03,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:06:03,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:03,855 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 17:06:03,858 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 17:06:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 17:06:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 17:06:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 17:06:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 17:06:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 17:06:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 17:06:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 17:06:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 17:06:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 17:06:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 17:06:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 17:06:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 17:06:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 17:06:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 17:06:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 17:06:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 17:06:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 17:06:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 17:06:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:06:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 17:06:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 17:06:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 17:06:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:06:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 17:06:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 17:06:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:06:03,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:06:04,102 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:06:04,104 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:06:04,109 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-20 17:06:04,147 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-20 17:06:04,159 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-20 17:06:05,863 INFO L? ?]: Removed 1028 outVars from TransFormulas that were not future-live. [2024-11-20 17:06:05,864 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:06:05,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:06:05,898 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-20 17:06:05,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:06:05 BoogieIcfgContainer [2024-11-20 17:06:05,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:06:05,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:06:05,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:06:05,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:06:05,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:06:02" (1/3) ... [2024-11-20 17:06:05,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:06:05, skipping insertion in model container [2024-11-20 17:06:05,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:06:03" (2/3) ... [2024-11-20 17:06:05,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:06:05, skipping insertion in model container [2024-11-20 17:06:05,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:06:05" (3/3) ... [2024-11-20 17:06:05,908 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test2-1.i [2024-11-20 17:06:05,924 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:06:05,925 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-20 17:06:06,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:06:06,013 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;@34da6467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:06:06,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-20 17:06:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 631 states have (on average 2.0142630744849446) internal successors, (1271), 1048 states have internal predecessors, (1271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 17:06:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 17:06:06,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:06,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 17:06:06,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:06,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1758832, now seen corresponding path program 1 times [2024-11-20 17:06:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:06,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660809499] [2024-11-20 17:06:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:06,273 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 17:06:06,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660809499] [2024-11-20 17:06:06,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660809499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:06,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:06,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:06,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912059974] [2024-11-20 17:06:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:06,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:06,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:06,311 INFO L87 Difference]: Start difference. First operand has 1053 states, 631 states have (on average 2.0142630744849446) internal successors, (1271), 1048 states have internal predecessors, (1271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:07,164 INFO L93 Difference]: Finished difference Result 1349 states and 1602 transitions. [2024-11-20 17:06:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:06:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 17:06:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:07,189 INFO L225 Difference]: With dead ends: 1349 [2024-11-20 17:06:07,189 INFO L226 Difference]: Without dead ends: 1345 [2024-11-20 17:06:07,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:07,194 INFO L432 NwaCegarLoop]: 1098 mSDtfsCounter, 382 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:07,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2648 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 17:06:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-20 17:06:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1260. [2024-11-20 17:06:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 844 states have (on average 1.8815165876777251) internal successors, (1588), 1255 states have internal predecessors, (1588), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 17:06:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1594 transitions. [2024-11-20 17:06:07,283 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1594 transitions. Word has length 4 [2024-11-20 17:06:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:07,283 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1594 transitions. [2024-11-20 17:06:07,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1594 transitions. [2024-11-20 17:06:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 17:06:07,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:07,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 17:06:07,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:06:07,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:07,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-20 17:06:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:07,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324510067] [2024-11-20 17:06:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:07,333 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 17:06:07,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:07,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324510067] [2024-11-20 17:06:07,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324510067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:07,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:07,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:06:07,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604356801] [2024-11-20 17:06:07,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:07,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:06:07,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:06:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:06:07,337 INFO L87 Difference]: Start difference. First operand 1260 states and 1594 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:07,795 INFO L93 Difference]: Finished difference Result 1257 states and 1586 transitions. [2024-11-20 17:06:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:06:07,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 17:06:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:07,805 INFO L225 Difference]: With dead ends: 1257 [2024-11-20 17:06:07,805 INFO L226 Difference]: Without dead ends: 1257 [2024-11-20 17:06:07,805 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 17:06:07,806 INFO L432 NwaCegarLoop]: 817 mSDtfsCounter, 1086 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:07,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 861 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 17:06:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-20 17:06:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2024-11-20 17:06:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 852 states have (on average 1.8544600938967135) internal successors, (1580), 1252 states have internal predecessors, (1580), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 17:06:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1586 transitions. [2024-11-20 17:06:07,833 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1586 transitions. Word has length 4 [2024-11-20 17:06:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:07,833 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1586 transitions. [2024-11-20 17:06:07,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1586 transitions. [2024-11-20 17:06:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 17:06:07,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:07,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 17:06:07,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:06:07,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:07,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-20 17:06:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397030374] [2024-11-20 17:06:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:07,917 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 17:06:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397030374] [2024-11-20 17:06:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397030374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:06:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885939438] [2024-11-20 17:06:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:07,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:06:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:06:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:06:07,919 INFO L87 Difference]: Start difference. First operand 1257 states and 1586 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:08,646 INFO L93 Difference]: Finished difference Result 2016 states and 2490 transitions. [2024-11-20 17:06:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:06:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 17:06:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:08,656 INFO L225 Difference]: With dead ends: 2016 [2024-11-20 17:06:08,656 INFO L226 Difference]: Without dead ends: 2016 [2024-11-20 17:06:08,657 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 17:06:08,657 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 903 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:08,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1693 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 17:06:08,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2024-11-20 17:06:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1754. [2024-11-20 17:06:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1350 states have (on average 1.8288888888888888) internal successors, (2469), 1747 states have internal predecessors, (2469), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2479 transitions. [2024-11-20 17:06:08,687 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2479 transitions. Word has length 4 [2024-11-20 17:06:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:08,687 INFO L471 AbstractCegarLoop]: Abstraction has 1754 states and 2479 transitions. [2024-11-20 17:06:08,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2479 transitions. [2024-11-20 17:06:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 17:06:08,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:08,688 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:08,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:06:08,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:08,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-20 17:06:08,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367284683] [2024-11-20 17:06:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:08,793 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 17:06:08,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:08,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367284683] [2024-11-20 17:06:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367284683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:08,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:08,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:06:08,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844392579] [2024-11-20 17:06:08,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:08,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:06:08,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:08,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:06:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:06:08,795 INFO L87 Difference]: Start difference. First operand 1754 states and 2479 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:06:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:09,376 INFO L93 Difference]: Finished difference Result 1792 states and 2410 transitions. [2024-11-20 17:06:09,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:06:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-20 17:06:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:09,382 INFO L225 Difference]: With dead ends: 1792 [2024-11-20 17:06:09,383 INFO L226 Difference]: Without dead ends: 1792 [2024-11-20 17:06:09,383 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 17:06:09,384 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 1071 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:09,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1418 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 17:06:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2024-11-20 17:06:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1707. [2024-11-20 17:06:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1350 states have (on average 1.7762962962962963) internal successors, (2398), 1700 states have internal predecessors, (2398), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2408 transitions. [2024-11-20 17:06:09,421 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2408 transitions. Word has length 9 [2024-11-20 17:06:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:09,421 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2408 transitions. [2024-11-20 17:06:09,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:06:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2408 transitions. [2024-11-20 17:06:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 17:06:09,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:09,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:09,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:06:09,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:09,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-20 17:06:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:09,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609011092] [2024-11-20 17:06:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:09,498 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 17:06:09,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609011092] [2024-11-20 17:06:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609011092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:09,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:06:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854716828] [2024-11-20 17:06:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:09,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:06:09,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:06:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:06:09,501 INFO L87 Difference]: Start difference. First operand 1707 states and 2408 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:06:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:10,005 INFO L93 Difference]: Finished difference Result 2000 states and 2752 transitions. [2024-11-20 17:06:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:06:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-20 17:06:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:10,012 INFO L225 Difference]: With dead ends: 2000 [2024-11-20 17:06:10,012 INFO L226 Difference]: Without dead ends: 2000 [2024-11-20 17:06:10,012 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 17:06:10,017 INFO L432 NwaCegarLoop]: 1252 mSDtfsCounter, 863 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:10,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1666 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 17:06:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2024-11-20 17:06:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1682. [2024-11-20 17:06:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1350 states have (on average 1.74) internal successors, (2349), 1675 states have internal predecessors, (2349), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2359 transitions. [2024-11-20 17:06:10,062 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2359 transitions. Word has length 9 [2024-11-20 17:06:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:10,063 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 2359 transitions. [2024-11-20 17:06:10,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:06:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2359 transitions. [2024-11-20 17:06:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 17:06:10,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:10,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:10,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:06:10,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:10,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash -186143240, now seen corresponding path program 1 times [2024-11-20 17:06:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588594417] [2024-11-20 17:06:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:10,122 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 17:06:10,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:10,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588594417] [2024-11-20 17:06:10,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588594417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:10,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:10,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:10,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89226344] [2024-11-20 17:06:10,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:10,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:10,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:10,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:10,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:10,124 INFO L87 Difference]: Start difference. First operand 1682 states and 2359 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:10,658 INFO L93 Difference]: Finished difference Result 1806 states and 2518 transitions. [2024-11-20 17:06:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:06:10,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 17:06:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:10,663 INFO L225 Difference]: With dead ends: 1806 [2024-11-20 17:06:10,664 INFO L226 Difference]: Without dead ends: 1806 [2024-11-20 17:06:10,664 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 17:06:10,665 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 1286 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:10,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1400 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 17:06:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-11-20 17:06:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1659. [2024-11-20 17:06:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1350 states have (on average 1.6888888888888889) internal successors, (2280), 1652 states have internal predecessors, (2280), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2290 transitions. [2024-11-20 17:06:10,695 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2290 transitions. Word has length 14 [2024-11-20 17:06:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:10,695 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2290 transitions. [2024-11-20 17:06:10,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2290 transitions. [2024-11-20 17:06:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 17:06:10,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:10,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:10,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:06:10,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:10,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash -186143239, now seen corresponding path program 1 times [2024-11-20 17:06:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:10,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015248248] [2024-11-20 17:06:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:10,806 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 17:06:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015248248] [2024-11-20 17:06:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015248248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:10,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:10,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:10,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490273207] [2024-11-20 17:06:10,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:10,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:10,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:10,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:10,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:10,808 INFO L87 Difference]: Start difference. First operand 1659 states and 2290 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:11,624 INFO L93 Difference]: Finished difference Result 2160 states and 2773 transitions. [2024-11-20 17:06:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:06:11,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 17:06:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:11,629 INFO L225 Difference]: With dead ends: 2160 [2024-11-20 17:06:11,630 INFO L226 Difference]: Without dead ends: 2160 [2024-11-20 17:06:11,630 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 17:06:11,631 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 1277 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:11,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2252 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 17:06:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2024-11-20 17:06:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 1755. [2024-11-20 17:06:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1446 states have (on average 1.669432918395574) internal successors, (2414), 1748 states have internal predecessors, (2414), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2424 transitions. [2024-11-20 17:06:11,655 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2424 transitions. Word has length 14 [2024-11-20 17:06:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:11,655 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2424 transitions. [2024-11-20 17:06:11,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2424 transitions. [2024-11-20 17:06:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 17:06:11,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:11,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:11,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:06:11,656 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:11,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1505170837, now seen corresponding path program 1 times [2024-11-20 17:06:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979485090] [2024-11-20 17:06:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:11,699 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 17:06:11,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:11,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979485090] [2024-11-20 17:06:11,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979485090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:11,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:11,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:06:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508132595] [2024-11-20 17:06:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:11,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:11,700 INFO L87 Difference]: Start difference. First operand 1755 states and 2424 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:11,750 INFO L93 Difference]: Finished difference Result 1427 states and 1907 transitions. [2024-11-20 17:06:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:06:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-20 17:06:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:11,755 INFO L225 Difference]: With dead ends: 1427 [2024-11-20 17:06:11,755 INFO L226 Difference]: Without dead ends: 1427 [2024-11-20 17:06:11,755 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 17:06:11,756 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 45 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:11,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2809 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 17:06:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-11-20 17:06:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2024-11-20 17:06:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1137 states have (on average 1.6684256816182939) internal successors, (1897), 1420 states have internal predecessors, (1897), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1907 transitions. [2024-11-20 17:06:11,777 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1907 transitions. Word has length 16 [2024-11-20 17:06:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:11,777 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1907 transitions. [2024-11-20 17:06:11,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1907 transitions. [2024-11-20 17:06:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 17:06:11,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:11,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:11,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 17:06:11,779 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:11,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash -179577126, now seen corresponding path program 1 times [2024-11-20 17:06:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620920461] [2024-11-20 17:06:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:11,825 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 17:06:11,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620920461] [2024-11-20 17:06:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620920461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:11,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:11,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:11,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531575073] [2024-11-20 17:06:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:11,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:11,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:11,827 INFO L87 Difference]: Start difference. First operand 1427 states and 1907 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 17:06:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:12,296 INFO L93 Difference]: Finished difference Result 1541 states and 2015 transitions. [2024-11-20 17:06:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:06:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 17:06:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:12,303 INFO L225 Difference]: With dead ends: 1541 [2024-11-20 17:06:12,303 INFO L226 Difference]: Without dead ends: 1541 [2024-11-20 17:06:12,303 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 17:06:12,305 INFO L432 NwaCegarLoop]: 828 mSDtfsCounter, 1182 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:12,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1653 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 17:06:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2024-11-20 17:06:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1404. [2024-11-20 17:06:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1137 states have (on average 1.6279683377308707) internal successors, (1851), 1397 states have internal predecessors, (1851), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1861 transitions. [2024-11-20 17:06:12,323 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1861 transitions. Word has length 19 [2024-11-20 17:06:12,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:12,324 INFO L471 AbstractCegarLoop]: Abstraction has 1404 states and 1861 transitions. [2024-11-20 17:06:12,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 17:06:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1861 transitions. [2024-11-20 17:06:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 17:06:12,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:12,324 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:12,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:06:12,325 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:12,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash -179577125, now seen corresponding path program 1 times [2024-11-20 17:06:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781087641] [2024-11-20 17:06:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:12,384 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 17:06:12,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:12,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781087641] [2024-11-20 17:06:12,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781087641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:12,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768245360] [2024-11-20 17:06:12,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:12,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:06:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:06:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:06:12,385 INFO L87 Difference]: Start difference. First operand 1404 states and 1861 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 17:06:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:12,403 INFO L93 Difference]: Finished difference Result 1266 states and 1655 transitions. [2024-11-20 17:06:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:06:12,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 17:06:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:12,406 INFO L225 Difference]: With dead ends: 1266 [2024-11-20 17:06:12,406 INFO L226 Difference]: Without dead ends: 1266 [2024-11-20 17:06:12,407 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 17:06:12,407 INFO L432 NwaCegarLoop]: 828 mSDtfsCounter, 61 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:12,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1603 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 17:06:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-20 17:06:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2024-11-20 17:06:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1011 states have (on average 1.6271018793273986) internal successors, (1645), 1259 states have internal predecessors, (1645), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1655 transitions. [2024-11-20 17:06:12,421 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1655 transitions. Word has length 19 [2024-11-20 17:06:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:12,421 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1655 transitions. [2024-11-20 17:06:12,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 17:06:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1655 transitions. [2024-11-20 17:06:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-20 17:06:12,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:12,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:12,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 17:06:12,422 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:12,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash -774768265, now seen corresponding path program 1 times [2024-11-20 17:06:12,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070488769] [2024-11-20 17:06:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:12,466 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 17:06:12,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:12,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070488769] [2024-11-20 17:06:12,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070488769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:12,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:12,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:06:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628842697] [2024-11-20 17:06:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:12,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:12,468 INFO L87 Difference]: Start difference. First operand 1266 states and 1655 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 17:06:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:12,504 INFO L93 Difference]: Finished difference Result 1237 states and 1605 transitions. [2024-11-20 17:06:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:06:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-20 17:06:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:12,509 INFO L225 Difference]: With dead ends: 1237 [2024-11-20 17:06:12,509 INFO L226 Difference]: Without dead ends: 1237 [2024-11-20 17:06:12,509 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 17:06:12,510 INFO L432 NwaCegarLoop]: 793 mSDtfsCounter, 41 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:12,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2351 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 17:06:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-20 17:06:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1231. [2024-11-20 17:06:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 983 states have (on average 1.6164801627670398) internal successors, (1589), 1224 states have internal predecessors, (1589), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1599 transitions. [2024-11-20 17:06:12,525 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1599 transitions. Word has length 21 [2024-11-20 17:06:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:12,526 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1599 transitions. [2024-11-20 17:06:12,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 17:06:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1599 transitions. [2024-11-20 17:06:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 17:06:12,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:12,527 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:12,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 17:06:12,527 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:12,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -441307835, now seen corresponding path program 1 times [2024-11-20 17:06:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969003429] [2024-11-20 17:06:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:12,661 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 17:06:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:12,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969003429] [2024-11-20 17:06:12,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969003429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:12,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86562021] [2024-11-20 17:06:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:12,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:12,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:12,664 INFO L87 Difference]: Start difference. First operand 1231 states and 1599 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:13,112 INFO L93 Difference]: Finished difference Result 1813 states and 2395 transitions. [2024-11-20 17:06:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:06:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-20 17:06:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:13,122 INFO L225 Difference]: With dead ends: 1813 [2024-11-20 17:06:13,122 INFO L226 Difference]: Without dead ends: 1813 [2024-11-20 17:06:13,122 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 17:06:13,122 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 658 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:13,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1905 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 17:06:13,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2024-11-20 17:06:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1227. [2024-11-20 17:06:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 983 states have (on average 1.6083418107833163) internal successors, (1581), 1220 states have internal predecessors, (1581), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1591 transitions. [2024-11-20 17:06:13,158 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1591 transitions. Word has length 35 [2024-11-20 17:06:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:13,158 INFO L471 AbstractCegarLoop]: Abstraction has 1227 states and 1591 transitions. [2024-11-20 17:06:13,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:06:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1591 transitions. [2024-11-20 17:06:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 17:06:13,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:13,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:13,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 17:06:13,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:13,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1141586281, now seen corresponding path program 1 times [2024-11-20 17:06:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303837809] [2024-11-20 17:06:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:13,250 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 17:06:13,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:13,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303837809] [2024-11-20 17:06:13,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303837809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:13,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:13,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:06:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312594124] [2024-11-20 17:06:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:13,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:13,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:13,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:13,252 INFO L87 Difference]: Start difference. First operand 1227 states and 1591 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 17:06:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:13,291 INFO L93 Difference]: Finished difference Result 1209 states and 1561 transitions. [2024-11-20 17:06:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:06:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-20 17:06:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:13,296 INFO L225 Difference]: With dead ends: 1209 [2024-11-20 17:06:13,296 INFO L226 Difference]: Without dead ends: 1209 [2024-11-20 17:06:13,296 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 17:06:13,297 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 27 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:13,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2327 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 17:06:13,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-20 17:06:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-20 17:06:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 965 states have (on average 1.6072538860103627) internal successors, (1551), 1202 states have internal predecessors, (1551), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1561 transitions. [2024-11-20 17:06:13,317 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1561 transitions. Word has length 62 [2024-11-20 17:06:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:13,318 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1561 transitions. [2024-11-20 17:06:13,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 17:06:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1561 transitions. [2024-11-20 17:06:13,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-20 17:06:13,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:13,320 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:13,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 17:06:13,320 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:13,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 116988697, now seen corresponding path program 1 times [2024-11-20 17:06:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177875599] [2024-11-20 17:06:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:13,420 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 17:06:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177875599] [2024-11-20 17:06:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177875599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:13,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:06:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462203368] [2024-11-20 17:06:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:13,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:06:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:06:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:06:13,422 INFO L87 Difference]: Start difference. First operand 1209 states and 1561 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 17:06:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:13,459 INFO L93 Difference]: Finished difference Result 1209 states and 1553 transitions. [2024-11-20 17:06:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:06:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-20 17:06:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:13,463 INFO L225 Difference]: With dead ends: 1209 [2024-11-20 17:06:13,463 INFO L226 Difference]: Without dead ends: 1209 [2024-11-20 17:06:13,463 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 17:06:13,463 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 21 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:13,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2321 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 17:06:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-20 17:06:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-20 17:06:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 965 states have (on average 1.5989637305699482) internal successors, (1543), 1202 states have internal predecessors, (1543), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1553 transitions. [2024-11-20 17:06:13,477 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1553 transitions. Word has length 69 [2024-11-20 17:06:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:13,477 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1553 transitions. [2024-11-20 17:06:13,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 17:06:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1553 transitions. [2024-11-20 17:06:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-20 17:06:13,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:13,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:13,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 17:06:13,479 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:13,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1547714973, now seen corresponding path program 1 times [2024-11-20 17:06:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:13,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656512807] [2024-11-20 17:06:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:13,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:13,554 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 17:06:13,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656512807] [2024-11-20 17:06:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656512807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:13,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:13,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:06:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108102083] [2024-11-20 17:06:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:13,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:06:13,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:13,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:06:13,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:06:13,556 INFO L87 Difference]: Start difference. First operand 1209 states and 1553 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 17:06:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:13,601 INFO L93 Difference]: Finished difference Result 1474 states and 1856 transitions. [2024-11-20 17:06:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:06:13,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-20 17:06:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:13,605 INFO L225 Difference]: With dead ends: 1474 [2024-11-20 17:06:13,605 INFO L226 Difference]: Without dead ends: 1474 [2024-11-20 17:06:13,605 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 17:06:13,606 INFO L432 NwaCegarLoop]: 806 mSDtfsCounter, 201 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:13,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1559 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 17:06:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-11-20 17:06:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1461. [2024-11-20 17:06:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1217 states have (on average 1.513557929334429) internal successors, (1842), 1454 states have internal predecessors, (1842), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1852 transitions. [2024-11-20 17:06:13,621 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1852 transitions. Word has length 70 [2024-11-20 17:06:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:13,621 INFO L471 AbstractCegarLoop]: Abstraction has 1461 states and 1852 transitions. [2024-11-20 17:06:13,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 17:06:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1852 transitions. [2024-11-20 17:06:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-20 17:06:13,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:13,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:13,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 17:06:13,622 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:13,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash 616886410, now seen corresponding path program 1 times [2024-11-20 17:06:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:13,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662359610] [2024-11-20 17:06:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:13,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:13,930 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 17:06:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662359610] [2024-11-20 17:06:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662359610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:13,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 17:06:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984900344] [2024-11-20 17:06:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:13,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:06:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:06:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:06:13,933 INFO L87 Difference]: Start difference. First operand 1461 states and 1852 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:06:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:14,038 INFO L93 Difference]: Finished difference Result 2081 states and 2585 transitions. [2024-11-20 17:06:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:06:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-11-20 17:06:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:14,046 INFO L225 Difference]: With dead ends: 2081 [2024-11-20 17:06:14,046 INFO L226 Difference]: Without dead ends: 2078 [2024-11-20 17:06:14,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 17:06:14,047 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 727 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:14,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3773 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 17:06:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2024-11-20 17:06:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1362. [2024-11-20 17:06:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1118 states have (on average 1.5330948121645795) internal successors, (1714), 1355 states have internal predecessors, (1714), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1724 transitions. [2024-11-20 17:06:14,064 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1724 transitions. Word has length 76 [2024-11-20 17:06:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:14,064 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 1724 transitions. [2024-11-20 17:06:14,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:06:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1724 transitions. [2024-11-20 17:06:14,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 17:06:14,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:14,065 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:14,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 17:06:14,065 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:14,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1225414216, now seen corresponding path program 1 times [2024-11-20 17:06:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:14,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113458009] [2024-11-20 17:06:14,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:14,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:14,263 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 17:06:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113458009] [2024-11-20 17:06:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113458009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:14,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:14,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:06:14,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859671534] [2024-11-20 17:06:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:14,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:06:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:06:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:06:14,265 INFO L87 Difference]: Start difference. First operand 1362 states and 1724 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 17:06:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:14,718 INFO L93 Difference]: Finished difference Result 1361 states and 1722 transitions. [2024-11-20 17:06:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:06:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-20 17:06:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:14,722 INFO L225 Difference]: With dead ends: 1361 [2024-11-20 17:06:14,723 INFO L226 Difference]: Without dead ends: 1361 [2024-11-20 17:06:14,723 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 17:06:14,723 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 2 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:14,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2327 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 17:06:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2024-11-20 17:06:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2024-11-20 17:06:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1118 states have (on average 1.5313059033989267) internal successors, (1712), 1354 states have internal predecessors, (1712), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1722 transitions. [2024-11-20 17:06:14,738 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1722 transitions. Word has length 85 [2024-11-20 17:06:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:14,738 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1722 transitions. [2024-11-20 17:06:14,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 17:06:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1722 transitions. [2024-11-20 17:06:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 17:06:14,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:14,739 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:14,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 17:06:14,739 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:14,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1225414215, now seen corresponding path program 1 times [2024-11-20 17:06:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163939998] [2024-11-20 17:06:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:15,132 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 17:06:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163939998] [2024-11-20 17:06:15,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163939998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:15,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:15,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:06:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997742806] [2024-11-20 17:06:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:15,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:06:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:15,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:06:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:06:15,134 INFO L87 Difference]: Start difference. First operand 1361 states and 1722 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 17:06:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:15,717 INFO L93 Difference]: Finished difference Result 1360 states and 1720 transitions. [2024-11-20 17:06:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:06:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-20 17:06:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:15,726 INFO L225 Difference]: With dead ends: 1360 [2024-11-20 17:06:15,726 INFO L226 Difference]: Without dead ends: 1360 [2024-11-20 17:06:15,726 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 17:06:15,727 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 1 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:15,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2253 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 17:06:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2024-11-20 17:06:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1360. [2024-11-20 17:06:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1116 states have (on average 1.532258064516129) internal successors, (1710), 1353 states have internal predecessors, (1710), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1720 transitions. [2024-11-20 17:06:15,755 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1720 transitions. Word has length 85 [2024-11-20 17:06:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:15,755 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1720 transitions. [2024-11-20 17:06:15,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 17:06:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1720 transitions. [2024-11-20 17:06:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-20 17:06:15,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:15,756 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:15,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 17:06:15,756 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:15,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 919408255, now seen corresponding path program 1 times [2024-11-20 17:06:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269426838] [2024-11-20 17:06:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:15,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:15,992 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 17:06:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269426838] [2024-11-20 17:06:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269426838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 17:06:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282274002] [2024-11-20 17:06:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:15,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:06:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:06:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:06:15,995 INFO L87 Difference]: Start difference. First operand 1360 states and 1720 transitions. Second operand has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:16,722 INFO L93 Difference]: Finished difference Result 1378 states and 1746 transitions. [2024-11-20 17:06:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:06:16,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-20 17:06:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:16,731 INFO L225 Difference]: With dead ends: 1378 [2024-11-20 17:06:16,734 INFO L226 Difference]: Without dead ends: 1378 [2024-11-20 17:06:16,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:06:16,735 INFO L432 NwaCegarLoop]: 787 mSDtfsCounter, 10 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:16,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3598 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 17:06:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-20 17:06:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1369. [2024-11-20 17:06:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1124 states have (on average 1.5311387900355873) internal successors, (1721), 1360 states have internal predecessors, (1721), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-20 17:06:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1736 transitions. [2024-11-20 17:06:16,760 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1736 transitions. Word has length 93 [2024-11-20 17:06:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:16,761 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1736 transitions. [2024-11-20 17:06:16,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1736 transitions. [2024-11-20 17:06:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-20 17:06:16,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:16,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:16,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 17:06:16,762 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:16,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 919408256, now seen corresponding path program 1 times [2024-11-20 17:06:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:16,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893043171] [2024-11-20 17:06:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:17,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:17,199 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 17:06:17,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893043171] [2024-11-20 17:06:17,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893043171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:17,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:17,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 17:06:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809713802] [2024-11-20 17:06:17,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:17,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:06:17,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:06:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:06:17,201 INFO L87 Difference]: Start difference. First operand 1369 states and 1736 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:17,811 INFO L93 Difference]: Finished difference Result 1369 states and 1734 transitions. [2024-11-20 17:06:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:06:17,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-20 17:06:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:17,814 INFO L225 Difference]: With dead ends: 1369 [2024-11-20 17:06:17,814 INFO L226 Difference]: Without dead ends: 1369 [2024-11-20 17:06:17,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:06:17,815 INFO L432 NwaCegarLoop]: 791 mSDtfsCounter, 5 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:17,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2924 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 17:06:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2024-11-20 17:06:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2024-11-20 17:06:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1124 states have (on average 1.5293594306049823) internal successors, (1719), 1360 states have internal predecessors, (1719), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-20 17:06:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1734 transitions. [2024-11-20 17:06:17,830 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1734 transitions. Word has length 93 [2024-11-20 17:06:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:17,830 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1734 transitions. [2024-11-20 17:06:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1734 transitions. [2024-11-20 17:06:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-20 17:06:17,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:17,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:17,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 17:06:17,831 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:17,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash -941676498, now seen corresponding path program 1 times [2024-11-20 17:06:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:17,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894739611] [2024-11-20 17:06:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:18,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:18,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:18,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894739611] [2024-11-20 17:06:18,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894739611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:18,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756817563] [2024-11-20 17:06:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:18,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:18,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:18,265 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 17:06:18,266 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 17:06:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:18,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 17:06:18,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:18,474 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 17:06:18,600 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 17:06:18,601 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 17:06:18,631 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 19 treesize of output 1 [2024-11-20 17:06:18,700 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 22 treesize of output 10 [2024-11-20 17:06:18,850 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:18,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:18,893 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 31 treesize of output 13 [2024-11-20 17:06:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:18,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:18,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756817563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:18,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:18,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-20 17:06:18,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39653178] [2024-11-20 17:06:18,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:18,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:06:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:06:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=319, Unknown=7, NotChecked=0, Total=380 [2024-11-20 17:06:18,975 INFO L87 Difference]: Start difference. First operand 1369 states and 1734 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:20,626 INFO L93 Difference]: Finished difference Result 1376 states and 1740 transitions. [2024-11-20 17:06:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:06:20,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-20 17:06:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:20,629 INFO L225 Difference]: With dead ends: 1376 [2024-11-20 17:06:20,630 INFO L226 Difference]: Without dead ends: 1376 [2024-11-20 17:06:20,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=505, Unknown=8, NotChecked=0, Total=600 [2024-11-20 17:06:20,631 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 709 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 5352 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:20,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 5352 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 17:06:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-20 17:06:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1373. [2024-11-20 17:06:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1128 states have (on average 1.5265957446808511) internal successors, (1722), 1363 states have internal predecessors, (1722), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1734 transitions. [2024-11-20 17:06:20,649 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1734 transitions. Word has length 94 [2024-11-20 17:06:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:20,649 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 1734 transitions. [2024-11-20 17:06:20,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1734 transitions. [2024-11-20 17:06:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-20 17:06:20,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:20,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:20,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:06:20,855 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,SelfDestructingSolverStorable20 [2024-11-20 17:06:20,856 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:20,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash -941676497, now seen corresponding path program 1 times [2024-11-20 17:06:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037342033] [2024-11-20 17:06:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:21,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:21,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:21,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037342033] [2024-11-20 17:06:21,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037342033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:21,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144536558] [2024-11-20 17:06:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:21,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:21,521 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 17:06:21,523 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 17:06:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:21,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:06:21,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:21,688 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 17:06:21,775 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 17:06:21,776 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 17:06:21,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 17:06:21,807 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 19 treesize of output 1 [2024-11-20 17:06:21,811 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 13 treesize of output 9 [2024-11-20 17:06:21,880 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 22 treesize of output 10 [2024-11-20 17:06:21,884 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 9 treesize of output 3 [2024-11-20 17:06:21,971 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:21,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:21,979 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 30 treesize of output 13 [2024-11-20 17:06:22,008 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 31 treesize of output 13 [2024-11-20 17:06:22,013 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 9 treesize of output 3 [2024-11-20 17:06:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:22,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:22,112 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_773 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_773) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_773 (Array Int Int)) (v_ArrVal_774 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_773) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-20 17:06:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144536558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:22,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:22,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-20 17:06:22,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708278232] [2024-11-20 17:06:22,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:22,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:06:22,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:06:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=360, Unknown=1, NotChecked=38, Total=462 [2024-11-20 17:06:22,116 INFO L87 Difference]: Start difference. First operand 1373 states and 1734 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:23,943 INFO L93 Difference]: Finished difference Result 1375 states and 1738 transitions. [2024-11-20 17:06:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:06:23,945 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-20 17:06:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:23,947 INFO L225 Difference]: With dead ends: 1375 [2024-11-20 17:06:23,947 INFO L226 Difference]: Without dead ends: 1375 [2024-11-20 17:06:23,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=550, Unknown=1, NotChecked=48, Total=702 [2024-11-20 17:06:23,948 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 707 mSDsluCounter, 4184 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:23,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 4687 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-20 17:06:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-20 17:06:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1363. [2024-11-20 17:06:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1120 states have (on average 1.5276785714285714) internal successors, (1711), 1355 states have internal predecessors, (1711), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1721 transitions. [2024-11-20 17:06:23,962 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1721 transitions. Word has length 94 [2024-11-20 17:06:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:23,963 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 1721 transitions. [2024-11-20 17:06:23,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1721 transitions. [2024-11-20 17:06:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-20 17:06:23,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:23,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:23,971 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 17:06:24,164 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,SelfDestructingSolverStorable21 [2024-11-20 17:06:24,165 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:24,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1085513668, now seen corresponding path program 1 times [2024-11-20 17:06:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568603208] [2024-11-20 17:06:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:24,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:24,564 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 17:06:24,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:24,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568603208] [2024-11-20 17:06:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568603208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:24,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:24,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 17:06:24,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227957433] [2024-11-20 17:06:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:24,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 17:06:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 17:06:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-20 17:06:24,566 INFO L87 Difference]: Start difference. First operand 1363 states and 1721 transitions. Second operand has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:25,624 INFO L93 Difference]: Finished difference Result 1382 states and 1746 transitions. [2024-11-20 17:06:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 17:06:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-20 17:06:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:25,628 INFO L225 Difference]: With dead ends: 1382 [2024-11-20 17:06:25,628 INFO L226 Difference]: Without dead ends: 1382 [2024-11-20 17:06:25,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-20 17:06:25,629 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 725 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 4404 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:25,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 4404 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 17:06:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2024-11-20 17:06:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1378. [2024-11-20 17:06:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1134 states have (on average 1.5238095238095237) internal successors, (1728), 1368 states have internal predecessors, (1728), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1740 transitions. [2024-11-20 17:06:25,646 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1740 transitions. Word has length 96 [2024-11-20 17:06:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:25,646 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1740 transitions. [2024-11-20 17:06:25,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1740 transitions. [2024-11-20 17:06:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-20 17:06:25,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:25,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:25,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 17:06:25,647 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:25,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1085513669, now seen corresponding path program 1 times [2024-11-20 17:06:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96635546] [2024-11-20 17:06:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:25,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:26,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:26,194 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 17:06:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96635546] [2024-11-20 17:06:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96635546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:26,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:26,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 17:06:26,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936969388] [2024-11-20 17:06:26,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:26,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:06:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:06:26,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:06:26,196 INFO L87 Difference]: Start difference. First operand 1378 states and 1740 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:27,231 INFO L93 Difference]: Finished difference Result 1381 states and 1744 transitions. [2024-11-20 17:06:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:06:27,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-20 17:06:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:27,234 INFO L225 Difference]: With dead ends: 1381 [2024-11-20 17:06:27,234 INFO L226 Difference]: Without dead ends: 1381 [2024-11-20 17:06:27,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:06:27,235 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 736 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:27,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2610 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 17:06:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-20 17:06:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-20 17:06:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1134 states have (on average 1.5220458553791887) internal successors, (1726), 1368 states have internal predecessors, (1726), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1738 transitions. [2024-11-20 17:06:27,251 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1738 transitions. Word has length 96 [2024-11-20 17:06:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:27,252 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1738 transitions. [2024-11-20 17:06:27,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1738 transitions. [2024-11-20 17:06:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-20 17:06:27,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:27,254 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:27,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 17:06:27,254 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:27,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1242461109, now seen corresponding path program 1 times [2024-11-20 17:06:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027399198] [2024-11-20 17:06:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:27,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:27,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:27,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027399198] [2024-11-20 17:06:27,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027399198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:27,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438817030] [2024-11-20 17:06:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:27,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:27,723 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 17:06:27,725 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 17:06:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:27,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 17:06:27,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:27,911 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 17:06:28,000 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 17:06:28,001 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 17:06:28,031 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 19 treesize of output 1 [2024-11-20 17:06:28,087 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 22 treesize of output 10 [2024-11-20 17:06:28,200 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:28,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:28,280 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:28,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:28,295 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 31 treesize of output 13 [2024-11-20 17:06:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:28,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:28,331 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1061 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1061) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-20 17:06:28,336 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1061 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-20 17:06:28,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438817030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:28,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:28,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-20 17:06:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689429163] [2024-11-20 17:06:28,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:28,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 17:06:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 17:06:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=421, Unknown=18, NotChecked=86, Total=600 [2024-11-20 17:06:28,397 INFO L87 Difference]: Start difference. First operand 1378 states and 1738 transitions. Second operand has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:30,615 INFO L93 Difference]: Finished difference Result 1380 states and 1742 transitions. [2024-11-20 17:06:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:06:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-20 17:06:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:30,618 INFO L225 Difference]: With dead ends: 1380 [2024-11-20 17:06:30,619 INFO L226 Difference]: Without dead ends: 1380 [2024-11-20 17:06:30,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=588, Unknown=20, NotChecked=102, Total=812 [2024-11-20 17:06:30,620 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 702 mSDsluCounter, 6817 mSDsCounter, 0 mSdLazyCounter, 4608 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 7316 SdHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:30,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 7316 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4608 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-20 17:06:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2024-11-20 17:06:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1377. [2024-11-20 17:06:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1134 states have (on average 1.5202821869488536) internal successors, (1724), 1367 states have internal predecessors, (1724), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1736 transitions. [2024-11-20 17:06:30,639 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1736 transitions. Word has length 97 [2024-11-20 17:06:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:30,640 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 1736 transitions. [2024-11-20 17:06:30,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1736 transitions. [2024-11-20 17:06:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-20 17:06:30,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:30,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:30,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:06:30,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:30,844 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:30,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1242461110, now seen corresponding path program 1 times [2024-11-20 17:06:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977154053] [2024-11-20 17:06:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:30,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:31,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:31,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:31,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977154053] [2024-11-20 17:06:31,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977154053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:31,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520211419] [2024-11-20 17:06:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:31,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:31,516 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 17:06:31,517 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 17:06:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:31,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 17:06:31,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:31,707 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 17:06:31,785 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 17:06:31,792 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 17:06:31,792 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 17:06:31,799 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 13 treesize of output 9 [2024-11-20 17:06:31,806 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 19 treesize of output 1 [2024-11-20 17:06:31,850 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 22 treesize of output 10 [2024-11-20 17:06:31,853 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 9 treesize of output 3 [2024-11-20 17:06:31,933 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:31,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:31,940 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 30 treesize of output 13 [2024-11-20 17:06:31,989 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:31,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:31,995 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 30 treesize of output 13 [2024-11-20 17:06:32,008 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 31 treesize of output 13 [2024-11-20 17:06:32,011 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 9 treesize of output 3 [2024-11-20 17:06:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:32,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:32,060 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1222 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1221) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1222) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1221 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1221) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))))) is different from false [2024-11-20 17:06:32,069 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1222 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1221) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_1222) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1221 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1221) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4)))))) is different from false [2024-11-20 17:06:32,113 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1228 (Array Int Int)) (v_ArrVal_1227 (Array Int Int)) (v_ArrVal_1222 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1227))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1228) .cse0 v_ArrVal_1221) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1222) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1228 (Array Int Int)) (v_ArrVal_1227 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1228) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1221) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))))) is different from false [2024-11-20 17:06:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520211419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:32,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2024-11-20 17:06:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834936717] [2024-11-20 17:06:32,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:32,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:06:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:06:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=320, Unknown=3, NotChecked=114, Total=506 [2024-11-20 17:06:32,116 INFO L87 Difference]: Start difference. First operand 1377 states and 1736 transitions. Second operand has 18 states, 15 states have (on average 9.8) internal successors, (147), 17 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:33,181 INFO L93 Difference]: Finished difference Result 1379 states and 1740 transitions. [2024-11-20 17:06:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 17:06:33,182 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.8) internal successors, (147), 17 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-20 17:06:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:33,184 INFO L225 Difference]: With dead ends: 1379 [2024-11-20 17:06:33,184 INFO L226 Difference]: Without dead ends: 1379 [2024-11-20 17:06:33,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=546, Unknown=3, NotChecked=150, Total=812 [2024-11-20 17:06:33,184 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 704 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:33,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 3107 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 17:06:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-20 17:06:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1361. [2024-11-20 17:06:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1120 states have (on average 1.5241071428571429) internal successors, (1707), 1353 states have internal predecessors, (1707), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1717 transitions. [2024-11-20 17:06:33,197 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1717 transitions. Word has length 97 [2024-11-20 17:06:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:33,198 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1717 transitions. [2024-11-20 17:06:33,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.8) internal successors, (147), 17 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1717 transitions. [2024-11-20 17:06:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-20 17:06:33,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:33,199 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:33,207 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 17:06:33,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-20 17:06:33,399 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:33,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1729554310, now seen corresponding path program 1 times [2024-11-20 17:06:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888261030] [2024-11-20 17:06:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:33,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:33,834 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 17:06:33,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888261030] [2024-11-20 17:06:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888261030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:33,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:33,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-20 17:06:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146330343] [2024-11-20 17:06:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:33,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:06:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:06:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:06:33,836 INFO L87 Difference]: Start difference. First operand 1361 states and 1717 transitions. Second operand has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:35,182 INFO L93 Difference]: Finished difference Result 1386 states and 1748 transitions. [2024-11-20 17:06:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:06:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-20 17:06:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:35,184 INFO L225 Difference]: With dead ends: 1386 [2024-11-20 17:06:35,184 INFO L226 Difference]: Without dead ends: 1386 [2024-11-20 17:06:35,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-20 17:06:35,184 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 724 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 5830 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:35,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 5830 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3693 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 17:06:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-20 17:06:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1382. [2024-11-20 17:06:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1140 states have (on average 1.5175438596491229) internal successors, (1730), 1372 states have internal predecessors, (1730), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1742 transitions. [2024-11-20 17:06:35,195 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1742 transitions. Word has length 99 [2024-11-20 17:06:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:35,196 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1742 transitions. [2024-11-20 17:06:35,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1742 transitions. [2024-11-20 17:06:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-20 17:06:35,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:35,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:35,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-20 17:06:35,197 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:35,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1729554311, now seen corresponding path program 1 times [2024-11-20 17:06:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:35,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878958305] [2024-11-20 17:06:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:35,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:35,856 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 17:06:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878958305] [2024-11-20 17:06:35,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878958305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:35,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 17:06:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087757166] [2024-11-20 17:06:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:35,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:06:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:06:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:06:35,858 INFO L87 Difference]: Start difference. First operand 1382 states and 1742 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:36,896 INFO L93 Difference]: Finished difference Result 1385 states and 1746 transitions. [2024-11-20 17:06:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:06:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-20 17:06:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:36,900 INFO L225 Difference]: With dead ends: 1385 [2024-11-20 17:06:36,900 INFO L226 Difference]: Without dead ends: 1385 [2024-11-20 17:06:36,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:06:36,901 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 737 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:36,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 2985 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 17:06:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2024-11-20 17:06:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2024-11-20 17:06:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1140 states have (on average 1.5157894736842106) internal successors, (1728), 1372 states have internal predecessors, (1728), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1740 transitions. [2024-11-20 17:06:36,914 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1740 transitions. Word has length 99 [2024-11-20 17:06:36,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:36,914 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1740 transitions. [2024-11-20 17:06:36,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1740 transitions. [2024-11-20 17:06:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-20 17:06:36,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:36,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:36,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 17:06:36,915 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:36,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:36,915 INFO L85 PathProgramCache]: Analyzing trace with hash 131383797, now seen corresponding path program 1 times [2024-11-20 17:06:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296770088] [2024-11-20 17:06:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:37,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:37,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296770088] [2024-11-20 17:06:37,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296770088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181637079] [2024-11-20 17:06:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:37,445 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 17:06:37,446 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 17:06:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:37,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 17:06:37,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:37,657 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 17:06:37,741 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 17:06:37,741 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 17:06:37,765 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 19 treesize of output 1 [2024-11-20 17:06:37,835 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 22 treesize of output 10 [2024-11-20 17:06:37,941 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:37,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:38,006 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:38,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:38,055 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:38,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:38,069 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 31 treesize of output 13 [2024-11-20 17:06:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:38,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:38,103 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1540) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-20 17:06:38,109 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1540) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-20 17:06:38,147 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array Int Int)) (v_ArrVal_1539 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1539))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1540)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-20 17:06:38,155 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array Int Int)) (v_ArrVal_1539 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1539))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1540)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-20 17:06:38,182 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1543 (Array Int Int)) (v_ArrVal_1540 (Array Int Int)) (v_ArrVal_1539 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1543))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1539)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1540)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-20 17:06:38,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181637079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:38,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-20 17:06:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961289991] [2024-11-20 17:06:38,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:38,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 17:06:38,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 17:06:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=476, Unknown=5, NotChecked=240, Total=812 [2024-11-20 17:06:38,185 INFO L87 Difference]: Start difference. First operand 1382 states and 1740 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:39,778 INFO L93 Difference]: Finished difference Result 1384 states and 1744 transitions. [2024-11-20 17:06:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 17:06:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-20 17:06:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:39,781 INFO L225 Difference]: With dead ends: 1384 [2024-11-20 17:06:39,782 INFO L226 Difference]: Without dead ends: 1384 [2024-11-20 17:06:39,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=653, Unknown=5, NotChecked=280, Total=1056 [2024-11-20 17:06:39,786 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 699 mSDsluCounter, 5352 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 5850 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:39,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 5850 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 17:06:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2024-11-20 17:06:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1381. [2024-11-20 17:06:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1140 states have (on average 1.5140350877192983) internal successors, (1726), 1371 states have internal predecessors, (1726), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1738 transitions. [2024-11-20 17:06:39,799 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1738 transitions. Word has length 100 [2024-11-20 17:06:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:39,800 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1738 transitions. [2024-11-20 17:06:39,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1738 transitions. [2024-11-20 17:06:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-20 17:06:39,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:39,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:39,812 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 17:06:40,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-20 17:06:40,002 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:40,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 131383798, now seen corresponding path program 1 times [2024-11-20 17:06:40,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:40,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015215260] [2024-11-20 17:06:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:40,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:40,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015215260] [2024-11-20 17:06:40,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015215260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290400494] [2024-11-20 17:06:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:40,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:40,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:40,723 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 17:06:40,724 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 17:06:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:40,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 17:06:40,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:40,927 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 17:06:40,997 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 17:06:41,003 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 17:06:41,003 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 17:06:41,024 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 19 treesize of output 1 [2024-11-20 17:06:41,031 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 19 treesize of output 1 [2024-11-20 17:06:41,092 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 22 treesize of output 10 [2024-11-20 17:06:41,094 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 9 treesize of output 3 [2024-11-20 17:06:41,172 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:41,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:41,178 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 30 treesize of output 13 [2024-11-20 17:06:41,230 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:41,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:41,240 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 30 treesize of output 13 [2024-11-20 17:06:41,296 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:41,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:41,304 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 41 treesize of output 22 [2024-11-20 17:06:41,335 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 30 treesize of output 12 [2024-11-20 17:06:41,336 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 31 treesize of output 13 [2024-11-20 17:06:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:41,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:41,502 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1712 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1712))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1714 (Array Int Int)) (v_ArrVal_1713 (Array Int Int)) (v_ArrVal_1715 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1713))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse0 .cse2 v_ArrVal_1714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1715) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) (forall ((v_ArrVal_1712 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1712))) (or (< (+ (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1714 (Array Int Int)) (v_ArrVal_1713 (Array Int Int))) (<= 0 (+ (select (select (store .cse4 (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8)))))))) is different from false [2024-11-20 17:06:41,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290400494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:41,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-20 17:06:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967775831] [2024-11-20 17:06:41,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:41,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 17:06:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 17:06:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=734, Unknown=26, NotChecked=56, Total=930 [2024-11-20 17:06:41,746 INFO L87 Difference]: Start difference. First operand 1381 states and 1738 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:44,122 INFO L93 Difference]: Finished difference Result 1383 states and 1742 transitions. [2024-11-20 17:06:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:06:44,122 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-20 17:06:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:44,124 INFO L225 Difference]: With dead ends: 1383 [2024-11-20 17:06:44,125 INFO L226 Difference]: Without dead ends: 1383 [2024-11-20 17:06:44,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1119, Unknown=26, NotChecked=70, Total=1406 [2024-11-20 17:06:44,125 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 706 mSDsluCounter, 6103 mSDsCounter, 0 mSdLazyCounter, 6079 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 6604 SdHoareTripleChecker+Invalid, 6096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:44,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 6604 Invalid, 6096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 6079 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-20 17:06:44,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-11-20 17:06:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1359. [2024-11-20 17:06:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1120 states have (on average 1.5205357142857143) internal successors, (1703), 1351 states have internal predecessors, (1703), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1713 transitions. [2024-11-20 17:06:44,139 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1713 transitions. Word has length 100 [2024-11-20 17:06:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:44,139 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1713 transitions. [2024-11-20 17:06:44,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1713 transitions. [2024-11-20 17:06:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-20 17:06:44,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:44,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:44,148 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 17:06:44,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:44,345 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:44,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1569551445, now seen corresponding path program 1 times [2024-11-20 17:06:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:44,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625632073] [2024-11-20 17:06:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:44,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:44,722 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 17:06:44,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625632073] [2024-11-20 17:06:44,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625632073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:44,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:44,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 17:06:44,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236052354] [2024-11-20 17:06:44,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:44,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 17:06:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 17:06:44,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-20 17:06:44,724 INFO L87 Difference]: Start difference. First operand 1359 states and 1713 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:45,850 INFO L93 Difference]: Finished difference Result 1390 states and 1750 transitions. [2024-11-20 17:06:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:06:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-20 17:06:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:45,853 INFO L225 Difference]: With dead ends: 1390 [2024-11-20 17:06:45,853 INFO L226 Difference]: Without dead ends: 1390 [2024-11-20 17:06:45,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-20 17:06:45,853 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 744 mSDsluCounter, 4366 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:45,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 4867 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 17:06:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-20 17:06:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1386. [2024-11-20 17:06:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1146 states have (on average 1.5113438045375218) internal successors, (1732), 1376 states have internal predecessors, (1732), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1744 transitions. [2024-11-20 17:06:45,866 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1744 transitions. Word has length 102 [2024-11-20 17:06:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:45,866 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 1744 transitions. [2024-11-20 17:06:45,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1744 transitions. [2024-11-20 17:06:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-20 17:06:45,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:45,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:45,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-20 17:06:45,868 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:45,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1569551444, now seen corresponding path program 1 times [2024-11-20 17:06:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:45,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173928804] [2024-11-20 17:06:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:46,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:46,486 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 17:06:46,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:46,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173928804] [2024-11-20 17:06:46,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173928804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:46,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 17:06:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648176937] [2024-11-20 17:06:46,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:46,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 17:06:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 17:06:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-20 17:06:46,488 INFO L87 Difference]: Start difference. First operand 1386 states and 1744 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:47,768 INFO L93 Difference]: Finished difference Result 1389 states and 1748 transitions. [2024-11-20 17:06:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:06:47,769 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-20 17:06:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:47,771 INFO L225 Difference]: With dead ends: 1389 [2024-11-20 17:06:47,771 INFO L226 Difference]: Without dead ends: 1389 [2024-11-20 17:06:47,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-20 17:06:47,771 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 720 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:47,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3820 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 17:06:47,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-20 17:06:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1386. [2024-11-20 17:06:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1146 states have (on average 1.5095986038394416) internal successors, (1730), 1376 states have internal predecessors, (1730), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1742 transitions. [2024-11-20 17:06:47,785 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1742 transitions. Word has length 102 [2024-11-20 17:06:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:47,786 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 1742 transitions. [2024-11-20 17:06:47,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1742 transitions. [2024-11-20 17:06:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 17:06:47,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:47,787 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:47,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-20 17:06:47,787 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:47,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1340139228, now seen corresponding path program 1 times [2024-11-20 17:06:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519415392] [2024-11-20 17:06:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:48,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519415392] [2024-11-20 17:06:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519415392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471645515] [2024-11-20 17:06:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:48,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:48,278 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 17:06:48,279 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 17:06:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:48,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 17:06:48,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:48,477 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 17:06:48,551 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 17:06:48,551 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 17:06:48,557 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 19 treesize of output 1 [2024-11-20 17:06:48,609 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:48,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-20 17:06:48,638 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:48,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-20 17:06:48,666 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:48,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-20 17:06:48,692 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:48,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:06:48,699 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 31 treesize of output 13 [2024-11-20 17:06:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:48,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:48,713 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-20 17:06:48,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-20 17:06:48,747 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2058 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-20 17:06:48,754 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2058 (Array Int Int)) (v_ArrVal_2057 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2057)) (.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_2058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-20 17:06:48,759 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2058 (Array Int Int)) (v_ArrVal_2057 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2057))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_2058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-20 17:06:48,767 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2058 (Array Int Int)) (v_ArrVal_2057 (Array Int Int)) (v_ArrVal_2056 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2056))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2057)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-20 17:06:48,812 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int)) (v_ArrVal_2058 (Array Int Int)) (v_ArrVal_2057 (Array Int Int)) (v_ArrVal_2056 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2061))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2056)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2057)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-20 17:06:48,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471645515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:48,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:48,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2024-11-20 17:06:48,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931937522] [2024-11-20 17:06:48,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:48,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 17:06:48,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:48,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 17:06:48,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=469, Unknown=17, NotChecked=240, Total=812 [2024-11-20 17:06:48,815 INFO L87 Difference]: Start difference. First operand 1386 states and 1742 transitions. Second operand has 22 states, 20 states have (on average 7.95) internal successors, (159), 21 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 17:06:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:50,258 INFO L93 Difference]: Finished difference Result 1388 states and 1746 transitions. [2024-11-20 17:06:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:06:50,259 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 7.95) internal successors, (159), 21 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-20 17:06:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:50,261 INFO L225 Difference]: With dead ends: 1388 [2024-11-20 17:06:50,261 INFO L226 Difference]: Without dead ends: 1388 [2024-11-20 17:06:50,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=953, Unknown=17, NotChecked=340, Total=1482 [2024-11-20 17:06:50,262 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 700 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 6345 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:50,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 6345 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3963 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 17:06:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2024-11-20 17:06:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1385. [2024-11-20 17:06:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1146 states have (on average 1.5078534031413613) internal successors, (1728), 1375 states have internal predecessors, (1728), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1740 transitions. [2024-11-20 17:06:50,274 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1740 transitions. Word has length 103 [2024-11-20 17:06:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:50,274 INFO L471 AbstractCegarLoop]: Abstraction has 1385 states and 1740 transitions. [2024-11-20 17:06:50,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 7.95) internal successors, (159), 21 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 17:06:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1740 transitions. [2024-11-20 17:06:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 17:06:50,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:50,275 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:50,283 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 17:06:50,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:50,476 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:50,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1340139229, now seen corresponding path program 1 times [2024-11-20 17:06:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:50,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537611279] [2024-11-20 17:06:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:50,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:51,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:51,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:51,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537611279] [2024-11-20 17:06:51,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537611279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:51,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436006666] [2024-11-20 17:06:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:51,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:06:51,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:06:51,266 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 17:06:51,267 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 17:06:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:51,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-20 17:06:51,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:06:51,515 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 17:06:51,605 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 17:06:51,605 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 17:06:51,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 17:06:51,632 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 13 treesize of output 9 [2024-11-20 17:06:51,637 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 19 treesize of output 1 [2024-11-20 17:06:51,709 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 22 treesize of output 10 [2024-11-20 17:06:51,713 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 9 treesize of output 3 [2024-11-20 17:06:51,787 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:51,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:51,790 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 30 treesize of output 13 [2024-11-20 17:06:51,844 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:51,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:51,849 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 30 treesize of output 13 [2024-11-20 17:06:51,895 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:51,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:51,902 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 30 treesize of output 13 [2024-11-20 17:06:51,945 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:06:51,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-20 17:06:51,951 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 30 treesize of output 13 [2024-11-20 17:06:51,963 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 31 treesize of output 13 [2024-11-20 17:06:51,967 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 9 treesize of output 3 [2024-11-20 17:06:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:06:51,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:06:52,036 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2246 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-20 17:06:52,045 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2246 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20)))))) is different from false [2024-11-20 17:06:52,061 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2244) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2245))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2244) .cse1 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-20 17:06:52,071 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2245))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2244) .cse1 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2244) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20)))))) is different from false [2024-11-20 17:06:52,094 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int)) (v_ArrVal_2243 (Array Int Int)) (v_ArrVal_2242 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2243))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2242) .cse0 v_ArrVal_2244) (select (select (store .cse1 .cse0 v_ArrVal_2245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2246))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20))) (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int)) (v_ArrVal_2243 (Array Int Int)) (v_ArrVal_2242 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2243))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_2245))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2242) .cse3 v_ArrVal_2244) .cse4 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-20 17:06:52,129 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int)) (v_ArrVal_2243 (Array Int Int)) (v_ArrVal_2242 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2243))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2242) .cse1 v_ArrVal_2244) (select (select (store .cse2 .cse1 v_ArrVal_2245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2246))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int)) (v_ArrVal_2243 (Array Int Int)) (v_ArrVal_2242 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2243))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2245))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2242) .cse4 v_ArrVal_2244) .cse5 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))) is different from false [2024-11-20 17:06:52,286 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int)) (v_ArrVal_2243 (Array Int Int)) (v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2242 (Array Int Int)) (v_ArrVal_2252 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2253))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2243))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2252) .cse0 v_ArrVal_2242) .cse1 v_ArrVal_2244) (select (select (store .cse2 .cse1 v_ArrVal_2245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2246))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_2247 (Array Int Int)) (v_ArrVal_2246 (Array Int Int)) (v_ArrVal_2245 (Array Int Int)) (v_ArrVal_2244 (Array Int Int)) (v_ArrVal_2243 (Array Int Int)) (v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2242 (Array Int Int)) (v_ArrVal_2252 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2253))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2243))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2245))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2252) .cse5 v_ArrVal_2242) .cse6 v_ArrVal_2244) .cse7 v_ArrVal_2246) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_2247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-20 17:06:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436006666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:06:52,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:06:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-11-20 17:06:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414645477] [2024-11-20 17:06:52,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:06:52,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:06:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:52,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:06:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=618, Unknown=7, NotChecked=392, Total=1122 [2024-11-20 17:06:52,293 INFO L87 Difference]: Start difference. First operand 1385 states and 1740 transitions. Second operand has 25 states, 22 states have (on average 7.545454545454546) internal successors, (166), 24 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:54,986 INFO L93 Difference]: Finished difference Result 1387 states and 1744 transitions. [2024-11-20 17:06:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 17:06:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.545454545454546) internal successors, (166), 24 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-20 17:06:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:54,989 INFO L225 Difference]: With dead ends: 1387 [2024-11-20 17:06:54,989 INFO L226 Difference]: Without dead ends: 1387 [2024-11-20 17:06:54,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1036, Unknown=7, NotChecked=504, Total=1722 [2024-11-20 17:06:54,990 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 702 mSDsluCounter, 6327 mSDsCounter, 0 mSdLazyCounter, 6594 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 6613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:54,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 6827 Invalid, 6613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 6594 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-20 17:06:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2024-11-20 17:06:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1357. [2024-11-20 17:06:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1120 states have (on average 1.5169642857142858) internal successors, (1699), 1349 states have internal predecessors, (1699), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:06:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1709 transitions. [2024-11-20 17:06:55,004 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1709 transitions. Word has length 103 [2024-11-20 17:06:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:55,005 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1709 transitions. [2024-11-20 17:06:55,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.545454545454546) internal successors, (166), 24 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:06:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1709 transitions. [2024-11-20 17:06:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-20 17:06:55,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:55,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:55,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 17:06:55,207 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,SelfDestructingSolverStorable33 [2024-11-20 17:06:55,207 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:55,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -891994195, now seen corresponding path program 1 times [2024-11-20 17:06:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727377718] [2024-11-20 17:06:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:55,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:55,780 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 17:06:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727377718] [2024-11-20 17:06:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727377718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:55,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-20 17:06:55,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471366863] [2024-11-20 17:06:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:55,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:06:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:06:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:06:55,781 INFO L87 Difference]: Start difference. First operand 1357 states and 1709 transitions. Second operand has 15 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:57,020 INFO L93 Difference]: Finished difference Result 1396 states and 1754 transitions. [2024-11-20 17:06:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:06:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2024-11-20 17:06:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:57,022 INFO L225 Difference]: With dead ends: 1396 [2024-11-20 17:06:57,022 INFO L226 Difference]: Without dead ends: 1396 [2024-11-20 17:06:57,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-20 17:06:57,023 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 740 mSDsluCounter, 4849 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:57,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 5349 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-20 17:06:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2024-11-20 17:06:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1392. [2024-11-20 17:06:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1154 states have (on average 1.5043327556325823) internal successors, (1736), 1382 states have internal predecessors, (1736), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1748 transitions. [2024-11-20 17:06:57,032 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1748 transitions. Word has length 106 [2024-11-20 17:06:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:57,033 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1748 transitions. [2024-11-20 17:06:57,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1748 transitions. [2024-11-20 17:06:57,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-20 17:06:57,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:57,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:57,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-20 17:06:57,033 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:57,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash -891994194, now seen corresponding path program 1 times [2024-11-20 17:06:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293870088] [2024-11-20 17:06:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:57,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:06:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:06:57,914 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 17:06:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:06:57,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293870088] [2024-11-20 17:06:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293870088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:06:57,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:06:57,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-20 17:06:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605751906] [2024-11-20 17:06:57,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:06:57,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:06:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:06:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:06:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:06:57,916 INFO L87 Difference]: Start difference. First operand 1392 states and 1748 transitions. Second operand has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:06:59,875 INFO L93 Difference]: Finished difference Result 1395 states and 1752 transitions. [2024-11-20 17:06:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:06:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2024-11-20 17:06:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:06:59,877 INFO L225 Difference]: With dead ends: 1395 [2024-11-20 17:06:59,877 INFO L226 Difference]: Without dead ends: 1395 [2024-11-20 17:06:59,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-20 17:06:59,878 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 721 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 17:06:59,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 5038 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4482 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-20 17:06:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-20 17:06:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1392. [2024-11-20 17:06:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1154 states have (on average 1.5025996533795494) internal successors, (1734), 1382 states have internal predecessors, (1734), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:06:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1746 transitions. [2024-11-20 17:06:59,890 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1746 transitions. Word has length 106 [2024-11-20 17:06:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:06:59,890 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1746 transitions. [2024-11-20 17:06:59,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:06:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1746 transitions. [2024-11-20 17:06:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-20 17:06:59,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:06:59,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:06:59,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-20 17:06:59,891 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:06:59,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:06:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash 374381150, now seen corresponding path program 1 times [2024-11-20 17:06:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:06:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725593579] [2024-11-20 17:06:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:06:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:06:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:00,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:07:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:07:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:07:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725593579] [2024-11-20 17:07:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725593579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:07:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210435069] [2024-11-20 17:07:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:07:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:07:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:07:00,676 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 17:07:00,677 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 17:07:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:00,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 17:07:00,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:07:00,946 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 17:07:01,037 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 17:07:01,037 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 17:07:01,063 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 19 treesize of output 1 [2024-11-20 17:07:01,126 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 22 treesize of output 10 [2024-11-20 17:07:01,229 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:01,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:07:01,309 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:01,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:07:01,350 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:01,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:07:01,389 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:01,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:07:01,434 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:01,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 17:07:01,443 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 31 treesize of output 13 [2024-11-20 17:07:01,488 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2024-11-20 17:07:01,488 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 22 treesize of output 33 [2024-11-20 17:07:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:07:01,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:07:02,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210435069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:07:02,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:07:02,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2024-11-20 17:07:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212802896] [2024-11-20 17:07:02,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:07:02,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 17:07:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:07:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 17:07:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1233, Unknown=55, NotChecked=0, Total=1482 [2024-11-20 17:07:02,166 INFO L87 Difference]: Start difference. First operand 1392 states and 1746 transitions. Second operand has 28 states, 25 states have (on average 6.96) internal successors, (174), 27 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:07:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:07:04,254 INFO L93 Difference]: Finished difference Result 1394 states and 1750 transitions. [2024-11-20 17:07:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 17:07:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 6.96) internal successors, (174), 27 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-20 17:07:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:07:04,257 INFO L225 Difference]: With dead ends: 1394 [2024-11-20 17:07:04,257 INFO L226 Difference]: Without dead ends: 1394 [2024-11-20 17:07:04,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=1595, Unknown=55, NotChecked=0, Total=1892 [2024-11-20 17:07:04,257 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 683 mSDsluCounter, 6298 mSDsCounter, 0 mSdLazyCounter, 4334 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 6794 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-20 17:07:04,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 6794 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4334 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-20 17:07:04,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2024-11-20 17:07:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1391. [2024-11-20 17:07:04,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1154 states have (on average 1.5008665511265165) internal successors, (1732), 1381 states have internal predecessors, (1732), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:07:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1744 transitions. [2024-11-20 17:07:04,271 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1744 transitions. Word has length 107 [2024-11-20 17:07:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:07:04,271 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 1744 transitions. [2024-11-20 17:07:04,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 6.96) internal successors, (174), 27 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:07:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1744 transitions. [2024-11-20 17:07:04,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-20 17:07:04,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:07:04,272 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:07:04,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 17:07:04,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-20 17:07:04,473 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:07:04,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:07:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash 374381151, now seen corresponding path program 1 times [2024-11-20 17:07:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:07:04,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18878478] [2024-11-20 17:07:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:07:04,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:07:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:05,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:07:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:07:05,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:07:05,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18878478] [2024-11-20 17:07:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18878478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:07:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771513343] [2024-11-20 17:07:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:07:05,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:07:05,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:07:05,394 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 17:07:05,395 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 17:07:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:05,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-20 17:07:05,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:07:05,614 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 17:07:05,678 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 17:07:05,691 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 17:07:05,691 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 17:07:05,730 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 13 treesize of output 9 [2024-11-20 17:07:05,735 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 19 treesize of output 1 [2024-11-20 17:07:05,823 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 33 treesize of output 15 [2024-11-20 17:07:05,826 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 9 treesize of output 3 [2024-11-20 17:07:05,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:05,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-20 17:07:05,981 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 30 treesize of output 13 [2024-11-20 17:07:06,077 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:06,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-20 17:07:06,086 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 30 treesize of output 13 [2024-11-20 17:07:06,147 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:06,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-20 17:07:06,153 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 30 treesize of output 13 [2024-11-20 17:07:06,220 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:06,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-20 17:07:06,223 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 30 treesize of output 13 [2024-11-20 17:07:06,282 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 17:07:06,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-20 17:07:06,288 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 30 treesize of output 13 [2024-11-20 17:07:06,313 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 42 treesize of output 18 [2024-11-20 17:07:06,317 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 9 treesize of output 3 [2024-11-20 17:07:06,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 17:07:06,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-20 17:07:06,362 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-20 17:07:06,362 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 17:07:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:07:06,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:07:06,693 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2829 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2829) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2830) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1)))) (forall ((v_ArrVal_2832 (Array Int Int)) (v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2829 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2833 Int)) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2830))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2829) .cse2 v_ArrVal_2831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2833) (select (select (store .cse3 .cse2 v_ArrVal_2832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) is different from false [2024-11-20 17:07:06,843 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (or (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2829 (Array Int Int)) (v_ArrVal_2828 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (< 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2828))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2827) .cse1 v_ArrVal_2829) (select (select (store .cse2 .cse1 v_ArrVal_2830) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2831))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))) (forall ((v_ArrVal_2832 (Array Int Int)) (v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2829 (Array Int Int)) (v_ArrVal_2828 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int) (v_ArrVal_2827 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2833 Int)) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2828))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2830))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ 4 (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2827) .cse4 v_ArrVal_2829) .cse5 v_ArrVal_2831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2833) (select (select (store .cse6 .cse5 v_ArrVal_2832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))))) is different from false [2024-11-20 17:07:07,328 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (or (forall ((v_ArrVal_2825 (Array Int Int)) (v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2829 (Array Int Int)) (v_ArrVal_2828 (Array Int Int)) (v_ArrVal_2827 (Array Int Int)) (v_ArrVal_2826 (Array Int Int))) (< 0 (+ (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2826))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2828))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2825) .cse1 v_ArrVal_2827) .cse2 v_ArrVal_2829) (select (select (store .cse3 .cse2 v_ArrVal_2830) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2831))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))) (forall ((v_ArrVal_2825 (Array Int Int)) (v_ArrVal_2832 (Array Int Int)) (v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2829 (Array Int Int)) (v_ArrVal_2828 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int) (v_ArrVal_2827 (Array Int Int)) (v_ArrVal_2826 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2833 Int)) (let ((.cse11 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2826))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_2828))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_2830))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2825) .cse6 v_ArrVal_2827) .cse7 v_ArrVal_2829) .cse8 v_ArrVal_2831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2833) (select (select (store .cse9 .cse8 v_ArrVal_2832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))))) is different from false [2024-11-20 17:07:09,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771513343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:07:09,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:07:09,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 28 [2024-11-20 17:07:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342016763] [2024-11-20 17:07:09,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:07:09,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-20 17:07:09,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:07:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-20 17:07:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1215, Unknown=32, NotChecked=222, Total=1640 [2024-11-20 17:07:09,069 INFO L87 Difference]: Start difference. First operand 1391 states and 1744 transitions. Second operand has 29 states, 26 states have (on average 6.653846153846154) internal successors, (173), 28 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:07:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:07:12,920 INFO L93 Difference]: Finished difference Result 1393 states and 1748 transitions. [2024-11-20 17:07:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:07:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.653846153846154) internal successors, (173), 28 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-20 17:07:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:07:12,922 INFO L225 Difference]: With dead ends: 1393 [2024-11-20 17:07:12,922 INFO L226 Difference]: Without dead ends: 1393 [2024-11-20 17:07:12,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=203, Invalid=1499, Unknown=32, NotChecked=246, Total=1980 [2024-11-20 17:07:12,923 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 684 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 4890 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 4906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-20 17:07:12,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 5427 Invalid, 4906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4890 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-20 17:07:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-11-20 17:07:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1355. [2024-11-20 17:07:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1120 states have (on average 1.5133928571428572) internal successors, (1695), 1347 states have internal predecessors, (1695), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:07:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1705 transitions. [2024-11-20 17:07:12,933 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1705 transitions. Word has length 107 [2024-11-20 17:07:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:07:12,933 INFO L471 AbstractCegarLoop]: Abstraction has 1355 states and 1705 transitions. [2024-11-20 17:07:12,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.653846153846154) internal successors, (173), 28 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 17:07:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1705 transitions. [2024-11-20 17:07:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-20 17:07:12,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:07:12,934 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:07:12,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 17:07:13,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-20 17:07:13,134 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr100REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:07:13,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:07:13,135 INFO L85 PathProgramCache]: Analyzing trace with hash -435738541, now seen corresponding path program 1 times [2024-11-20 17:07:13,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:07:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546844285] [2024-11-20 17:07:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:07:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:07:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:13,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:07:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:13,445 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 17:07:13,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:07:13,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546844285] [2024-11-20 17:07:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546844285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:07:13,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:07:13,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 17:07:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399377485] [2024-11-20 17:07:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:07:13,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:07:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:07:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:07:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:07:13,447 INFO L87 Difference]: Start difference. First operand 1355 states and 1705 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:07:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:07:14,101 INFO L93 Difference]: Finished difference Result 1360 states and 1714 transitions. [2024-11-20 17:07:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:07:14,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-20 17:07:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:07:14,104 INFO L225 Difference]: With dead ends: 1360 [2024-11-20 17:07:14,104 INFO L226 Difference]: Without dead ends: 1360 [2024-11-20 17:07:14,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:07:14,104 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 6 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 17:07:14,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3055 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 17:07:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2024-11-20 17:07:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1354. [2024-11-20 17:07:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1120 states have (on average 1.511607142857143) internal successors, (1693), 1346 states have internal predecessors, (1693), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 17:07:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1703 transitions. [2024-11-20 17:07:14,119 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1703 transitions. Word has length 109 [2024-11-20 17:07:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:07:14,119 INFO L471 AbstractCegarLoop]: Abstraction has 1354 states and 1703 transitions. [2024-11-20 17:07:14,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:07:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1703 transitions. [2024-11-20 17:07:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-20 17:07:14,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:07:14,120 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:07:14,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-20 17:07:14,121 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:07:14,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:07:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -435738540, now seen corresponding path program 1 times [2024-11-20 17:07:14,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:07:14,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107594816] [2024-11-20 17:07:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:07:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:07:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:15,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 17:07:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:07:15,345 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 17:07:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:07:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107594816] [2024-11-20 17:07:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107594816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:07:15,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:07:15,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-20 17:07:15,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400984541] [2024-11-20 17:07:15,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:07:15,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 17:07:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:07:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 17:07:15,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-20 17:07:15,346 INFO L87 Difference]: Start difference. First operand 1354 states and 1703 transitions. Second operand has 20 states, 18 states have (on average 5.944444444444445) internal successors, (107), 19 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:07:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 17:07:17,812 INFO L93 Difference]: Finished difference Result 1398 states and 1752 transitions. [2024-11-20 17:07:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:07:17,813 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.944444444444445) internal successors, (107), 19 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-20 17:07:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 17:07:17,814 INFO L225 Difference]: With dead ends: 1398 [2024-11-20 17:07:17,814 INFO L226 Difference]: Without dead ends: 1398 [2024-11-20 17:07:17,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-11-20 17:07:17,815 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 734 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 3663 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-20 17:07:17,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 4307 Invalid, 3686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3663 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-20 17:07:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2024-11-20 17:07:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1395. [2024-11-20 17:07:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1160 states have (on average 1.4948275862068965) internal successors, (1734), 1385 states have internal predecessors, (1734), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 17:07:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1746 transitions. [2024-11-20 17:07:17,825 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1746 transitions. Word has length 109 [2024-11-20 17:07:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 17:07:17,825 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 1746 transitions. [2024-11-20 17:07:17,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.944444444444445) internal successors, (107), 19 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 17:07:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1746 transitions. [2024-11-20 17:07:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-20 17:07:17,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 17:07:17,826 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:07:17,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-20 17:07:17,826 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-20 17:07:17,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:07:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -840563709, now seen corresponding path program 1 times [2024-11-20 17:07:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:07:17,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359775884] [2024-11-20 17:07:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:07:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:07:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat