./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_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-?-c7c6ca5-m [2024-11-09 10:01:55,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:01:55,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:01:55,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:01:55,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:01:55,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:01:55,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:01:55,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:01:55,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:01:55,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:01:55,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:01:55,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:01:55,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:01:55,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:01:55,538 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:01:55,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:01:55,538 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:01:55,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:01:55,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:01:55,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:01:55,539 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:01:55,542 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:01:55,542 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:01:55,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:01:55,543 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:01:55,543 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:01:55,543 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:01:55,543 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:01:55,543 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:01:55,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:01:55,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:01:55,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:01:55,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:01:55,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:01:55,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:01:55,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:01:55,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:01:55,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:01:55,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:01:55,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:01:55,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:01:55,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:01:55,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-09 10:01:55,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:01:55,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:01:55,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:01:55,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:01:55,857 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:01:55,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-1.i [2024-11-09 10:01:57,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:01:57,562 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:01:57,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-1.i [2024-11-09 10:01:57,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ef945f3/481c4579988a492ca0af019e2c6d5b41/FLAGb85ea0151 [2024-11-09 10:01:57,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ef945f3/481c4579988a492ca0af019e2c6d5b41 [2024-11-09 10:01:57,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:01:57,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:01:57,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:01:57,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:01:57,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:01:57,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:01:57" (1/1) ... [2024-11-09 10:01:57,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3907fa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:57, skipping insertion in model container [2024-11-09 10:01:57,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:01:57" (1/1) ... [2024-11-09 10:01:57,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:01:58,221 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,262 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,270 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,279 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,287 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,329 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,331 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,336 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,337 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:01:58,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:01:58,368 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:01:58,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:01:58,543 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:01:58,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58 WrapperNode [2024-11-09 10:01:58,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:01:58,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:01:58,548 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:01:58,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:01:58,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,652 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1289 [2024-11-09 10:01:58,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:01:58,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:01:58,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:01:58,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:01:58,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,757 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]. [2024-11-09 10:01:58,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:01:58,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:01:58,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:01:58,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:01:58,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (1/1) ... [2024-11-09 10:01:58,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:01:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:01:58,896 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) [2024-11-09 10:01:58,900 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 [2024-11-09 10:01:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 10:01:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 10:01:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 10:01:58,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 10:01:58,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 10:01:58,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 10:01:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 10:01:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 10:01:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 10:01:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 10:01:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 10:01:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:01:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:01:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:01:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:01:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:01:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:01:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:01:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:01:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 10:01:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 10:01:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 10:01:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:01:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:01:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:01:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:01:58,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:01:59,145 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:01:59,146 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:01:59,149 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 10:01:59,206 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 10:01:59,232 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 10:02:01,268 INFO L? ?]: Removed 1028 outVars from TransFormulas that were not future-live. [2024-11-09 10:02:01,269 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:02:01,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:02:01,319 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-09 10:02:01,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:02:01 BoogieIcfgContainer [2024-11-09 10:02:01,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:02:01,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:02:01,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:02:01,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:02:01,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:01:57" (1/3) ... [2024-11-09 10:02:01,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f77d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:02:01, skipping insertion in model container [2024-11-09 10:02:01,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:58" (2/3) ... [2024-11-09 10:02:01,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f77d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:02:01, skipping insertion in model container [2024-11-09 10:02:01,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:02:01" (3/3) ... [2024-11-09 10:02:01,330 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test2-1.i [2024-11-09 10:02:01,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:02:01,349 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-09 10:02:01,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:02:01,467 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;@e075231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:02:01,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-09 10:02:01,475 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) [2024-11-09 10:02:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 10:02:01,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:01,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 10:02:01,484 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)] === [2024-11-09 10:02:01,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:01,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1758832, now seen corresponding path program 1 times [2024-11-09 10:02:01,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:01,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094187847] [2024-11-09 10:02:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:01,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:01,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094187847] [2024-11-09 10:02:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094187847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:01,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:01,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80514444] [2024-11-09 10:02:01,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:01,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:01,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:01,882 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) [2024-11-09 10:02:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:02,917 INFO L93 Difference]: Finished difference Result 1349 states and 1602 transitions. [2024-11-09 10:02:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:02:02,921 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 [2024-11-09 10:02:02,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:02,950 INFO L225 Difference]: With dead ends: 1349 [2024-11-09 10:02:02,950 INFO L226 Difference]: Without dead ends: 1345 [2024-11-09 10:02:02,952 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 [2024-11-09 10:02:02,958 INFO L432 NwaCegarLoop]: 1098 mSDtfsCounter, 382 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:02,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2648 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 10:02:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-09 10:02:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1260. [2024-11-09 10:02:03,068 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) [2024-11-09 10:02:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1594 transitions. [2024-11-09 10:02:03,076 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1594 transitions. Word has length 4 [2024-11-09 10:02:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:03,077 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1594 transitions. [2024-11-09 10:02:03,077 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) [2024-11-09 10:02:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1594 transitions. [2024-11-09 10:02:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 10:02:03,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:03,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 10:02:03,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:02:03,078 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)] === [2024-11-09 10:02:03,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-09 10:02:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:03,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91659677] [2024-11-09 10:02:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91659677] [2024-11-09 10:02:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91659677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:03,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:02:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968832876] [2024-11-09 10:02:03,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:03,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:02:03,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:03,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:02:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:02:03,155 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) [2024-11-09 10:02:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:03,685 INFO L93 Difference]: Finished difference Result 1257 states and 1586 transitions. [2024-11-09 10:02:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:02:03,686 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 [2024-11-09 10:02:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:03,694 INFO L225 Difference]: With dead ends: 1257 [2024-11-09 10:02:03,695 INFO L226 Difference]: Without dead ends: 1257 [2024-11-09 10:02:03,695 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 [2024-11-09 10:02:03,700 INFO L432 NwaCegarLoop]: 817 mSDtfsCounter, 1086 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:03,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 861 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 10:02:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-09 10:02:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2024-11-09 10:02:03,728 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) [2024-11-09 10:02:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1586 transitions. [2024-11-09 10:02:03,732 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1586 transitions. Word has length 4 [2024-11-09 10:02:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:03,733 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1586 transitions. [2024-11-09 10:02:03,733 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) [2024-11-09 10:02:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1586 transitions. [2024-11-09 10:02:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 10:02:03,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:03,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 10:02:03,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:02:03,734 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)] === [2024-11-09 10:02:03,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-09 10:02:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:03,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785675020] [2024-11-09 10:02:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785675020] [2024-11-09 10:02:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785675020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:03,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:02:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661823706] [2024-11-09 10:02:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:03,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:02:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:02:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:02:03,852 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) [2024-11-09 10:02:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:04,732 INFO L93 Difference]: Finished difference Result 2016 states and 2490 transitions. [2024-11-09 10:02:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:02:04,733 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 [2024-11-09 10:02:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:04,742 INFO L225 Difference]: With dead ends: 2016 [2024-11-09 10:02:04,742 INFO L226 Difference]: Without dead ends: 2016 [2024-11-09 10:02:04,742 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 [2024-11-09 10:02:04,744 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 903 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:04,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1693 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 10:02:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2024-11-09 10:02:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1754. [2024-11-09 10:02:04,776 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) [2024-11-09 10:02:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2479 transitions. [2024-11-09 10:02:04,783 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2479 transitions. Word has length 4 [2024-11-09 10:02:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:04,783 INFO L471 AbstractCegarLoop]: Abstraction has 1754 states and 2479 transitions. [2024-11-09 10:02:04,783 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) [2024-11-09 10:02:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2479 transitions. [2024-11-09 10:02:04,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 10:02:04,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:04,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:04,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:02:04,785 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)] === [2024-11-09 10:02:04,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-09 10:02:04,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:04,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937404142] [2024-11-09 10:02:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:04,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937404142] [2024-11-09 10:02:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937404142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:04,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:04,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:02:04,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451521016] [2024-11-09 10:02:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:04,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:02:04,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:02:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:02:04,909 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) [2024-11-09 10:02:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:05,530 INFO L93 Difference]: Finished difference Result 1792 states and 2410 transitions. [2024-11-09 10:02:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:02:05,531 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 [2024-11-09 10:02:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:05,537 INFO L225 Difference]: With dead ends: 1792 [2024-11-09 10:02:05,538 INFO L226 Difference]: Without dead ends: 1792 [2024-11-09 10:02:05,538 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 [2024-11-09 10:02:05,539 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 1071 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:05,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1418 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 10:02:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2024-11-09 10:02:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1707. [2024-11-09 10:02:05,564 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) [2024-11-09 10:02:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2408 transitions. [2024-11-09 10:02:05,569 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2408 transitions. Word has length 9 [2024-11-09 10:02:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:05,569 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2408 transitions. [2024-11-09 10:02:05,569 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) [2024-11-09 10:02:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2408 transitions. [2024-11-09 10:02:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 10:02:05,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:05,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:05,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:02:05,570 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)] === [2024-11-09 10:02:05,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-09 10:02:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:05,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409711138] [2024-11-09 10:02:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:05,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409711138] [2024-11-09 10:02:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409711138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:02:05,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142081553] [2024-11-09 10:02:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:05,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:02:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:02:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:02:05,658 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) [2024-11-09 10:02:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:06,299 INFO L93 Difference]: Finished difference Result 2000 states and 2752 transitions. [2024-11-09 10:02:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:02:06,300 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 [2024-11-09 10:02:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:06,307 INFO L225 Difference]: With dead ends: 2000 [2024-11-09 10:02:06,307 INFO L226 Difference]: Without dead ends: 2000 [2024-11-09 10:02:06,308 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 [2024-11-09 10:02:06,308 INFO L432 NwaCegarLoop]: 1252 mSDtfsCounter, 863 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:06,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1666 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 10:02:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2024-11-09 10:02:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1682. [2024-11-09 10:02:06,342 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) [2024-11-09 10:02:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2359 transitions. [2024-11-09 10:02:06,348 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2359 transitions. Word has length 9 [2024-11-09 10:02:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:06,351 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 2359 transitions. [2024-11-09 10:02:06,352 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) [2024-11-09 10:02:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2359 transitions. [2024-11-09 10:02:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 10:02:06,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:06,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:06,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:02:06,353 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)] === [2024-11-09 10:02:06,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash -186143240, now seen corresponding path program 1 times [2024-11-09 10:02:06,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:06,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270258949] [2024-11-09 10:02:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270258949] [2024-11-09 10:02:06,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270258949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:06,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:06,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:06,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824751588] [2024-11-09 10:02:06,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:06,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:06,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:06,425 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) [2024-11-09 10:02:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:07,046 INFO L93 Difference]: Finished difference Result 1806 states and 2518 transitions. [2024-11-09 10:02:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:02:07,047 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 [2024-11-09 10:02:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:07,054 INFO L225 Difference]: With dead ends: 1806 [2024-11-09 10:02:07,055 INFO L226 Difference]: Without dead ends: 1806 [2024-11-09 10:02:07,055 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 [2024-11-09 10:02:07,057 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 1286 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:07,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1400 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 10:02:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-11-09 10:02:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1659. [2024-11-09 10:02:07,090 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) [2024-11-09 10:02:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2290 transitions. [2024-11-09 10:02:07,097 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2290 transitions. Word has length 14 [2024-11-09 10:02:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:07,098 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2290 transitions. [2024-11-09 10:02:07,098 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) [2024-11-09 10:02:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2290 transitions. [2024-11-09 10:02:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 10:02:07,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:07,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:07,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:02:07,099 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)] === [2024-11-09 10:02:07,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash -186143239, now seen corresponding path program 1 times [2024-11-09 10:02:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:07,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411419226] [2024-11-09 10:02:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:07,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411419226] [2024-11-09 10:02:07,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411419226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:07,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:07,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940713595] [2024-11-09 10:02:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:07,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:07,228 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) [2024-11-09 10:02:08,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:08,215 INFO L93 Difference]: Finished difference Result 2160 states and 2773 transitions. [2024-11-09 10:02:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:02:08,215 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 [2024-11-09 10:02:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:08,223 INFO L225 Difference]: With dead ends: 2160 [2024-11-09 10:02:08,223 INFO L226 Difference]: Without dead ends: 2160 [2024-11-09 10:02:08,224 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 [2024-11-09 10:02:08,224 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 1277 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:08,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2252 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 10:02:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2024-11-09 10:02:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 1755. [2024-11-09 10:02:08,251 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) [2024-11-09 10:02:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2424 transitions. [2024-11-09 10:02:08,256 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2424 transitions. Word has length 14 [2024-11-09 10:02:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:08,256 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2424 transitions. [2024-11-09 10:02:08,257 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) [2024-11-09 10:02:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2424 transitions. [2024-11-09 10:02:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 10:02:08,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:08,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:08,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:02:08,258 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)] === [2024-11-09 10:02:08,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:08,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1505170837, now seen corresponding path program 1 times [2024-11-09 10:02:08,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:08,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882851156] [2024-11-09 10:02:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:08,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:08,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:08,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882851156] [2024-11-09 10:02:08,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882851156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:08,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:08,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:02:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396958988] [2024-11-09 10:02:08,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:08,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:08,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:08,304 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) [2024-11-09 10:02:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:08,368 INFO L93 Difference]: Finished difference Result 1427 states and 1907 transitions. [2024-11-09 10:02:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:02:08,369 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 [2024-11-09 10:02:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:08,373 INFO L225 Difference]: With dead ends: 1427 [2024-11-09 10:02:08,374 INFO L226 Difference]: Without dead ends: 1427 [2024-11-09 10:02:08,374 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 [2024-11-09 10:02:08,375 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 [2024-11-09 10:02:08,375 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] [2024-11-09 10:02:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-11-09 10:02:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2024-11-09 10:02:08,397 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) [2024-11-09 10:02:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1907 transitions. [2024-11-09 10:02:08,401 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1907 transitions. Word has length 16 [2024-11-09 10:02:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:08,401 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1907 transitions. [2024-11-09 10:02:08,402 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) [2024-11-09 10:02:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1907 transitions. [2024-11-09 10:02:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 10:02:08,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:08,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:08,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:02:08,403 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)] === [2024-11-09 10:02:08,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash -179577126, now seen corresponding path program 1 times [2024-11-09 10:02:08,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:08,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532147938] [2024-11-09 10:02:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:08,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532147938] [2024-11-09 10:02:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532147938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:08,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:08,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:08,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728176806] [2024-11-09 10:02:08,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:08,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:08,455 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) [2024-11-09 10:02:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:08,984 INFO L93 Difference]: Finished difference Result 1541 states and 2015 transitions. [2024-11-09 10:02:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:02:08,985 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 [2024-11-09 10:02:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:08,989 INFO L225 Difference]: With dead ends: 1541 [2024-11-09 10:02:08,989 INFO L226 Difference]: Without dead ends: 1541 [2024-11-09 10:02:08,990 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 [2024-11-09 10:02:08,990 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:08,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1653 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 10:02:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2024-11-09 10:02:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1404. [2024-11-09 10:02:09,033 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) [2024-11-09 10:02:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1861 transitions. [2024-11-09 10:02:09,037 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1861 transitions. Word has length 19 [2024-11-09 10:02:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:09,037 INFO L471 AbstractCegarLoop]: Abstraction has 1404 states and 1861 transitions. [2024-11-09 10:02:09,038 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) [2024-11-09 10:02:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1861 transitions. [2024-11-09 10:02:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 10:02:09,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:09,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:02:09,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:02:09,039 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)] === [2024-11-09 10:02:09,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash -179577125, now seen corresponding path program 1 times [2024-11-09 10:02:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:09,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756220422] [2024-11-09 10:02:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:09,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:09,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756220422] [2024-11-09 10:02:09,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756220422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:09,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:09,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:09,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343067866] [2024-11-09 10:02:09,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:09,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:02:09,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:09,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:02:09,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:02:09,113 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) [2024-11-09 10:02:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:09,138 INFO L93 Difference]: Finished difference Result 1266 states and 1655 transitions. [2024-11-09 10:02:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:02:09,139 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 [2024-11-09 10:02:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:09,144 INFO L225 Difference]: With dead ends: 1266 [2024-11-09 10:02:09,145 INFO L226 Difference]: Without dead ends: 1266 [2024-11-09 10:02:09,145 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 [2024-11-09 10:02:09,145 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 [2024-11-09 10:02:09,146 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] [2024-11-09 10:02:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-09 10:02:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2024-11-09 10:02:09,165 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) [2024-11-09 10:02:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1655 transitions. [2024-11-09 10:02:09,170 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1655 transitions. Word has length 19 [2024-11-09 10:02:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:09,170 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1655 transitions. [2024-11-09 10:02:09,170 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) [2024-11-09 10:02:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1655 transitions. [2024-11-09 10:02:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 10:02:09,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:09,171 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] [2024-11-09 10:02:09,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:02:09,171 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)] === [2024-11-09 10:02:09,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash -774768265, now seen corresponding path program 1 times [2024-11-09 10:02:09,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:09,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985253011] [2024-11-09 10:02:09,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:09,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985253011] [2024-11-09 10:02:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985253011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:09,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:09,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:02:09,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406510053] [2024-11-09 10:02:09,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:09,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:09,227 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) [2024-11-09 10:02:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:09,280 INFO L93 Difference]: Finished difference Result 1237 states and 1605 transitions. [2024-11-09 10:02:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:02:09,281 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 [2024-11-09 10:02:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:09,285 INFO L225 Difference]: With dead ends: 1237 [2024-11-09 10:02:09,285 INFO L226 Difference]: Without dead ends: 1237 [2024-11-09 10:02:09,286 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 [2024-11-09 10:02:09,286 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 [2024-11-09 10:02:09,286 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] [2024-11-09 10:02:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-09 10:02:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1231. [2024-11-09 10:02:09,307 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) [2024-11-09 10:02:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1599 transitions. [2024-11-09 10:02:09,312 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1599 transitions. Word has length 21 [2024-11-09 10:02:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:09,312 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1599 transitions. [2024-11-09 10:02:09,313 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) [2024-11-09 10:02:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1599 transitions. [2024-11-09 10:02:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 10:02:09,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:09,314 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] [2024-11-09 10:02:09,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:02:09,314 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)] === [2024-11-09 10:02:09,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash -441307835, now seen corresponding path program 1 times [2024-11-09 10:02:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138295415] [2024-11-09 10:02:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:09,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:09,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:09,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138295415] [2024-11-09 10:02:09,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138295415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867378696] [2024-11-09 10:02:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:09,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:09,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:09,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:09,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:09,473 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) [2024-11-09 10:02:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:10,090 INFO L93 Difference]: Finished difference Result 1813 states and 2395 transitions. [2024-11-09 10:02:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:02:10,090 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 [2024-11-09 10:02:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:10,096 INFO L225 Difference]: With dead ends: 1813 [2024-11-09 10:02:10,097 INFO L226 Difference]: Without dead ends: 1813 [2024-11-09 10:02:10,097 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 [2024-11-09 10:02:10,097 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 658 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:10,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1905 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 10:02:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2024-11-09 10:02:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1227. [2024-11-09 10:02:10,147 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) [2024-11-09 10:02:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1591 transitions. [2024-11-09 10:02:10,149 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1591 transitions. Word has length 35 [2024-11-09 10:02:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:10,149 INFO L471 AbstractCegarLoop]: Abstraction has 1227 states and 1591 transitions. [2024-11-09 10:02:10,149 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) [2024-11-09 10:02:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1591 transitions. [2024-11-09 10:02:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 10:02:10,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:10,154 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] [2024-11-09 10:02:10,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:02:10,154 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)] === [2024-11-09 10:02:10,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1141586281, now seen corresponding path program 1 times [2024-11-09 10:02:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293467070] [2024-11-09 10:02:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:10,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:10,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293467070] [2024-11-09 10:02:10,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293467070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:10,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:10,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:02:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403120779] [2024-11-09 10:02:10,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:10,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:10,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:10,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:10,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:10,271 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) [2024-11-09 10:02:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:10,320 INFO L93 Difference]: Finished difference Result 1209 states and 1561 transitions. [2024-11-09 10:02:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:02:10,320 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 [2024-11-09 10:02:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:10,324 INFO L225 Difference]: With dead ends: 1209 [2024-11-09 10:02:10,324 INFO L226 Difference]: Without dead ends: 1209 [2024-11-09 10:02:10,325 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 [2024-11-09 10:02:10,325 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 [2024-11-09 10:02:10,325 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] [2024-11-09 10:02:10,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-09 10:02:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-09 10:02:10,349 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) [2024-11-09 10:02:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1561 transitions. [2024-11-09 10:02:10,351 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1561 transitions. Word has length 62 [2024-11-09 10:02:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:10,351 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1561 transitions. [2024-11-09 10:02:10,352 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) [2024-11-09 10:02:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1561 transitions. [2024-11-09 10:02:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 10:02:10,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:10,356 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] [2024-11-09 10:02:10,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:02:10,357 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)] === [2024-11-09 10:02:10,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash 116988697, now seen corresponding path program 1 times [2024-11-09 10:02:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875918658] [2024-11-09 10:02:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875918658] [2024-11-09 10:02:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875918658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:02:10,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125919212] [2024-11-09 10:02:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:10,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:02:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:02:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:02:10,503 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) [2024-11-09 10:02:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:10,551 INFO L93 Difference]: Finished difference Result 1209 states and 1553 transitions. [2024-11-09 10:02:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:02:10,552 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 [2024-11-09 10:02:10,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:10,555 INFO L225 Difference]: With dead ends: 1209 [2024-11-09 10:02:10,556 INFO L226 Difference]: Without dead ends: 1209 [2024-11-09 10:02:10,556 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 [2024-11-09 10:02:10,557 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 [2024-11-09 10:02:10,557 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] [2024-11-09 10:02:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-09 10:02:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-09 10:02:10,577 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) [2024-11-09 10:02:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1553 transitions. [2024-11-09 10:02:10,579 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1553 transitions. Word has length 69 [2024-11-09 10:02:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:10,579 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1553 transitions. [2024-11-09 10:02:10,580 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) [2024-11-09 10:02:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1553 transitions. [2024-11-09 10:02:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 10:02:10,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:10,580 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] [2024-11-09 10:02:10,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:02:10,581 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)] === [2024-11-09 10:02:10,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1547714973, now seen corresponding path program 1 times [2024-11-09 10:02:10,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:10,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004052507] [2024-11-09 10:02:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004052507] [2024-11-09 10:02:10,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004052507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:10,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:10,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:02:10,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135509303] [2024-11-09 10:02:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:10,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:02:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:10,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:02:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:02:10,687 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) [2024-11-09 10:02:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:10,747 INFO L93 Difference]: Finished difference Result 1474 states and 1856 transitions. [2024-11-09 10:02:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:02:10,748 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 [2024-11-09 10:02:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:10,753 INFO L225 Difference]: With dead ends: 1474 [2024-11-09 10:02:10,753 INFO L226 Difference]: Without dead ends: 1474 [2024-11-09 10:02:10,755 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 [2024-11-09 10:02:10,755 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 [2024-11-09 10:02:10,756 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] [2024-11-09 10:02:10,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-11-09 10:02:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1461. [2024-11-09 10:02:10,780 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) [2024-11-09 10:02:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1852 transitions. [2024-11-09 10:02:10,783 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1852 transitions. Word has length 70 [2024-11-09 10:02:10,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:10,784 INFO L471 AbstractCegarLoop]: Abstraction has 1461 states and 1852 transitions. [2024-11-09 10:02:10,784 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) [2024-11-09 10:02:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1852 transitions. [2024-11-09 10:02:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 10:02:10,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:10,785 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] [2024-11-09 10:02:10,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:02:10,786 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)] === [2024-11-09 10:02:10,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash 616886410, now seen corresponding path program 1 times [2024-11-09 10:02:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:10,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436258318] [2024-11-09 10:02:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:10,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:11,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436258318] [2024-11-09 10:02:11,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436258318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:11,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:11,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 10:02:11,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968511031] [2024-11-09 10:02:11,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:11,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:02:11,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:02:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:02:11,189 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) [2024-11-09 10:02:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:11,333 INFO L93 Difference]: Finished difference Result 2081 states and 2585 transitions. [2024-11-09 10:02:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:02:11,333 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 [2024-11-09 10:02:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:11,339 INFO L225 Difference]: With dead ends: 2081 [2024-11-09 10:02:11,340 INFO L226 Difference]: Without dead ends: 2078 [2024-11-09 10:02:11,340 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 [2024-11-09 10:02:11,341 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 [2024-11-09 10:02:11,341 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] [2024-11-09 10:02:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2024-11-09 10:02:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1362. [2024-11-09 10:02:11,362 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) [2024-11-09 10:02:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1724 transitions. [2024-11-09 10:02:11,364 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1724 transitions. Word has length 76 [2024-11-09 10:02:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:11,365 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 1724 transitions. [2024-11-09 10:02:11,365 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) [2024-11-09 10:02:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1724 transitions. [2024-11-09 10:02:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 10:02:11,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:11,366 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] [2024-11-09 10:02:11,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:02:11,366 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)] === [2024-11-09 10:02:11,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1225414216, now seen corresponding path program 1 times [2024-11-09 10:02:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401642313] [2024-11-09 10:02:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:11,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:11,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401642313] [2024-11-09 10:02:11,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401642313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:11,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:11,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:02:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639929710] [2024-11-09 10:02:11,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:11,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:02:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:02:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:02:11,665 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) [2024-11-09 10:02:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:12,158 INFO L93 Difference]: Finished difference Result 1361 states and 1722 transitions. [2024-11-09 10:02:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:02:12,159 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 [2024-11-09 10:02:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:12,163 INFO L225 Difference]: With dead ends: 1361 [2024-11-09 10:02:12,164 INFO L226 Difference]: Without dead ends: 1361 [2024-11-09 10:02:12,164 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 [2024-11-09 10:02:12,164 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:12,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2327 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 10:02:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2024-11-09 10:02:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2024-11-09 10:02:12,186 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) [2024-11-09 10:02:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1722 transitions. [2024-11-09 10:02:12,188 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1722 transitions. Word has length 85 [2024-11-09 10:02:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:12,188 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1722 transitions. [2024-11-09 10:02:12,189 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) [2024-11-09 10:02:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1722 transitions. [2024-11-09 10:02:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 10:02:12,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:12,190 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] [2024-11-09 10:02:12,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:02:12,190 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)] === [2024-11-09 10:02:12,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1225414215, now seen corresponding path program 1 times [2024-11-09 10:02:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:12,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907293343] [2024-11-09 10:02:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907293343] [2024-11-09 10:02:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907293343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:12,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:12,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:02:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754040629] [2024-11-09 10:02:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:12,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:02:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:02:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:02:12,699 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) [2024-11-09 10:02:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:13,388 INFO L93 Difference]: Finished difference Result 1360 states and 1720 transitions. [2024-11-09 10:02:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:02:13,388 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 [2024-11-09 10:02:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:13,396 INFO L225 Difference]: With dead ends: 1360 [2024-11-09 10:02:13,396 INFO L226 Difference]: Without dead ends: 1360 [2024-11-09 10:02:13,397 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 [2024-11-09 10:02:13,397 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 [2024-11-09 10:02:13,397 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] [2024-11-09 10:02:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2024-11-09 10:02:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1360. [2024-11-09 10:02:13,423 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) [2024-11-09 10:02:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1720 transitions. [2024-11-09 10:02:13,434 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1720 transitions. Word has length 85 [2024-11-09 10:02:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:13,435 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1720 transitions. [2024-11-09 10:02:13,435 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) [2024-11-09 10:02:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1720 transitions. [2024-11-09 10:02:13,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 10:02:13,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:13,436 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] [2024-11-09 10:02:13,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:02:13,436 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)] === [2024-11-09 10:02:13,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 919408255, now seen corresponding path program 1 times [2024-11-09 10:02:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880274813] [2024-11-09 10:02:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:13,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:13,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880274813] [2024-11-09 10:02:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880274813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:13,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:02:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23861287] [2024-11-09 10:02:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:13,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:02:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:02:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:02:13,757 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) [2024-11-09 10:02:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:14,606 INFO L93 Difference]: Finished difference Result 1378 states and 1746 transitions. [2024-11-09 10:02:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:02:14,606 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 [2024-11-09 10:02:14,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:14,614 INFO L225 Difference]: With dead ends: 1378 [2024-11-09 10:02:14,614 INFO L226 Difference]: Without dead ends: 1378 [2024-11-09 10:02:14,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:02:14,615 INFO L432 NwaCegarLoop]: 787 mSDtfsCounter, 10 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:14,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3598 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 10:02:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-09 10:02:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1369. [2024-11-09 10:02:14,649 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) [2024-11-09 10:02:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1736 transitions. [2024-11-09 10:02:14,655 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1736 transitions. Word has length 93 [2024-11-09 10:02:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:14,656 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1736 transitions. [2024-11-09 10:02:14,657 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) [2024-11-09 10:02:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1736 transitions. [2024-11-09 10:02:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 10:02:14,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:14,658 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] [2024-11-09 10:02:14,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:02:14,658 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)] === [2024-11-09 10:02:14,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash 919408256, now seen corresponding path program 1 times [2024-11-09 10:02:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982736663] [2024-11-09 10:02:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:15,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:15,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:15,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982736663] [2024-11-09 10:02:15,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982736663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:15,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:15,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:02:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227037466] [2024-11-09 10:02:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:15,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:02:15,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:02:15,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:02:15,208 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) [2024-11-09 10:02:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:15,940 INFO L93 Difference]: Finished difference Result 1369 states and 1734 transitions. [2024-11-09 10:02:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:02:15,942 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 [2024-11-09 10:02:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:15,950 INFO L225 Difference]: With dead ends: 1369 [2024-11-09 10:02:15,951 INFO L226 Difference]: Without dead ends: 1369 [2024-11-09 10:02:15,951 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 [2024-11-09 10:02:15,951 INFO L432 NwaCegarLoop]: 791 mSDtfsCounter, 5 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:15,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2924 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 10:02:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2024-11-09 10:02:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2024-11-09 10:02:15,977 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) [2024-11-09 10:02:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1734 transitions. [2024-11-09 10:02:15,980 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1734 transitions. Word has length 93 [2024-11-09 10:02:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:15,981 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1734 transitions. [2024-11-09 10:02:15,981 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) [2024-11-09 10:02:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1734 transitions. [2024-11-09 10:02:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 10:02:15,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:15,982 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] [2024-11-09 10:02:15,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:02:15,982 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)] === [2024-11-09 10:02:15,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash -941676498, now seen corresponding path program 1 times [2024-11-09 10:02:15,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470851543] [2024-11-09 10:02:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:15,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:16,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470851543] [2024-11-09 10:02:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470851543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824342982] [2024-11-09 10:02:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:16,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:16,572 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) [2024-11-09 10:02:16,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:02:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:16,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 10:02:16,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:16,846 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 [2024-11-09 10:02:17,005 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 10:02:17,006 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 [2024-11-09 10:02:17,059 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 [2024-11-09 10:02:17,146 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 [2024-11-09 10:02:17,346 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:17,346 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 [2024-11-09 10:02:17,393 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 [2024-11-09 10:02:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:17,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824342982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:17,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:17,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-09 10:02:17,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083392884] [2024-11-09 10:02:17,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:17,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:02:17,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:17,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:02:17,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=315, Unknown=11, NotChecked=0, Total=380 [2024-11-09 10:02:17,514 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) [2024-11-09 10:02:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:19,931 INFO L93 Difference]: Finished difference Result 1376 states and 1740 transitions. [2024-11-09 10:02:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:02:19,932 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 [2024-11-09 10:02:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:19,936 INFO L225 Difference]: With dead ends: 1376 [2024-11-09 10:02:19,936 INFO L226 Difference]: Without dead ends: 1376 [2024-11-09 10:02:19,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=501, Unknown=12, NotChecked=0, Total=600 [2024-11-09 10:02:19,937 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 709 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:19,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 5352 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 10:02:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-09 10:02:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1373. [2024-11-09 10:02:19,958 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) [2024-11-09 10:02:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1734 transitions. [2024-11-09 10:02:19,962 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1734 transitions. Word has length 94 [2024-11-09 10:02:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:19,962 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 1734 transitions. [2024-11-09 10:02:19,962 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) [2024-11-09 10:02:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1734 transitions. [2024-11-09 10:02:19,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 10:02:19,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:19,965 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] [2024-11-09 10:02:19,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:02:20,166 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 [2024-11-09 10:02:20,166 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)] === [2024-11-09 10:02:20,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -941676497, now seen corresponding path program 1 times [2024-11-09 10:02:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:20,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42713088] [2024-11-09 10:02:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:20,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42713088] [2024-11-09 10:02:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42713088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184994927] [2024-11-09 10:02:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:20,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:20,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:20,984 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) [2024-11-09 10:02:20,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:02:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:21,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:02:21,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:21,240 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 [2024-11-09 10:02:21,357 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:02:21,358 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 [2024-11-09 10:02:21,366 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 [2024-11-09 10:02:21,396 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 [2024-11-09 10:02:21,402 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 [2024-11-09 10:02:21,493 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 [2024-11-09 10:02:21,499 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 [2024-11-09 10:02:21,610 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:21,611 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 [2024-11-09 10:02:21,620 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 [2024-11-09 10:02:21,657 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 [2024-11-09 10:02:21,665 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 [2024-11-09 10:02:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:21,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:21,784 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 [2024-11-09 10:02:21,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184994927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:21,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:21,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-09 10:02:21,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793391102] [2024-11-09 10:02:21,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:21,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:02:21,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:21,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:02:21,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=360, Unknown=1, NotChecked=38, Total=462 [2024-11-09 10:02:21,791 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) [2024-11-09 10:02:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:23,999 INFO L93 Difference]: Finished difference Result 1375 states and 1738 transitions. [2024-11-09 10:02:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:02:24,000 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 [2024-11-09 10:02:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:24,003 INFO L225 Difference]: With dead ends: 1375 [2024-11-09 10:02:24,003 INFO L226 Difference]: Without dead ends: 1375 [2024-11-09 10:02:24,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=550, Unknown=1, NotChecked=48, Total=702 [2024-11-09 10:02:24,004 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 707 mSDsluCounter, 4184 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:24,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 4687 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 10:02:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-09 10:02:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1363. [2024-11-09 10:02:24,026 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) [2024-11-09 10:02:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1721 transitions. [2024-11-09 10:02:24,030 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1721 transitions. Word has length 94 [2024-11-09 10:02:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:24,031 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 1721 transitions. [2024-11-09 10:02:24,031 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) [2024-11-09 10:02:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1721 transitions. [2024-11-09 10:02:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 10:02:24,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:24,032 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] [2024-11-09 10:02:24,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:02:24,236 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 [2024-11-09 10:02:24,237 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)] === [2024-11-09 10:02:24,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1085513668, now seen corresponding path program 1 times [2024-11-09 10:02:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262779452] [2024-11-09 10:02:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:24,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262779452] [2024-11-09 10:02:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262779452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:24,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:24,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 10:02:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090070416] [2024-11-09 10:02:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:24,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:02:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:02:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:02:24,827 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) [2024-11-09 10:02:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:26,149 INFO L93 Difference]: Finished difference Result 1382 states and 1746 transitions. [2024-11-09 10:02:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:02:26,150 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 [2024-11-09 10:02:26,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:26,153 INFO L225 Difference]: With dead ends: 1382 [2024-11-09 10:02:26,153 INFO L226 Difference]: Without dead ends: 1382 [2024-11-09 10:02:26,154 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 [2024-11-09 10:02:26,154 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 725 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:26,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 4404 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 10:02:26,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2024-11-09 10:02:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1378. [2024-11-09 10:02:26,172 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) [2024-11-09 10:02:26,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1740 transitions. [2024-11-09 10:02:26,176 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1740 transitions. Word has length 96 [2024-11-09 10:02:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:26,177 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1740 transitions. [2024-11-09 10:02:26,177 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) [2024-11-09 10:02:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1740 transitions. [2024-11-09 10:02:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 10:02:26,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:26,178 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] [2024-11-09 10:02:26,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 10:02:26,179 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)] === [2024-11-09 10:02:26,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1085513669, now seen corresponding path program 1 times [2024-11-09 10:02:26,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:26,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803145910] [2024-11-09 10:02:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:26,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:26,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:26,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803145910] [2024-11-09 10:02:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803145910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:26,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:26,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 10:02:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673637027] [2024-11-09 10:02:26,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:26,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:02:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:26,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:02:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:02:26,943 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) [2024-11-09 10:02:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:28,077 INFO L93 Difference]: Finished difference Result 1381 states and 1744 transitions. [2024-11-09 10:02:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:02:28,078 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 [2024-11-09 10:02:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:28,081 INFO L225 Difference]: With dead ends: 1381 [2024-11-09 10:02:28,082 INFO L226 Difference]: Without dead ends: 1381 [2024-11-09 10:02:28,082 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 [2024-11-09 10:02:28,083 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 736 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2024-11-09 10:02:28,083 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] [2024-11-09 10:02:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-09 10:02:28,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-09 10:02:28,106 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) [2024-11-09 10:02:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1738 transitions. [2024-11-09 10:02:28,108 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1738 transitions. Word has length 96 [2024-11-09 10:02:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:28,109 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1738 transitions. [2024-11-09 10:02:28,109 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) [2024-11-09 10:02:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1738 transitions. [2024-11-09 10:02:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 10:02:28,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:28,110 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] [2024-11-09 10:02:28,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 10:02:28,110 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)] === [2024-11-09 10:02:28,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1242461109, now seen corresponding path program 1 times [2024-11-09 10:02:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:28,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253965610] [2024-11-09 10:02:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:28,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:28,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253965610] [2024-11-09 10:02:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253965610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776792925] [2024-11-09 10:02:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:28,687 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) [2024-11-09 10:02:28,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:02:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:28,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:02:28,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:28,939 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 [2024-11-09 10:02:29,057 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 10:02:29,057 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 [2024-11-09 10:02:29,091 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 [2024-11-09 10:02:29,163 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 [2024-11-09 10:02:29,294 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:29,294 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 [2024-11-09 10:02:29,388 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:29,388 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 [2024-11-09 10:02:29,404 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 [2024-11-09 10:02:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:29,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:29,534 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1064 (Array Int Int)) (v_ArrVal_1061 (Array Int Int))) (= 1 (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1064))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1061)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-09 10:02:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776792925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:29,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:29,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-09 10:02:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520667791] [2024-11-09 10:02:29,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:29,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 10:02:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 10:02:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=464, Unknown=12, NotChecked=44, Total=600 [2024-11-09 10:02:29,539 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) [2024-11-09 10:02:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:31,930 INFO L93 Difference]: Finished difference Result 1380 states and 1742 transitions. [2024-11-09 10:02:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:02:31,930 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 [2024-11-09 10:02:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:31,932 INFO L225 Difference]: With dead ends: 1380 [2024-11-09 10:02:31,933 INFO L226 Difference]: Without dead ends: 1380 [2024-11-09 10:02:31,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=640, Unknown=12, NotChecked=52, Total=812 [2024-11-09 10:02:31,933 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 702 mSDsluCounter, 6817 mSDsCounter, 0 mSdLazyCounter, 4608 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:31,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 7316 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4608 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 10:02:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2024-11-09 10:02:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1377. [2024-11-09 10:02:31,949 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) [2024-11-09 10:02:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1736 transitions. [2024-11-09 10:02:31,951 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1736 transitions. Word has length 97 [2024-11-09 10:02:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:31,952 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 1736 transitions. [2024-11-09 10:02:31,952 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) [2024-11-09 10:02:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1736 transitions. [2024-11-09 10:02:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 10:02:31,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:31,953 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] [2024-11-09 10:02:31,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:02:32,157 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 [2024-11-09 10:02:32,158 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)] === [2024-11-09 10:02:32,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1242461110, now seen corresponding path program 1 times [2024-11-09 10:02:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:32,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690602132] [2024-11-09 10:02:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:32,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:33,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690602132] [2024-11-09 10:02:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690602132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68699192] [2024-11-09 10:02:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:33,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:33,018 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) [2024-11-09 10:02:33,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:02:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:33,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 10:02:33,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:33,269 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 [2024-11-09 10:02:33,393 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 [2024-11-09 10:02:33,402 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:02:33,402 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 [2024-11-09 10:02:33,413 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 [2024-11-09 10:02:33,423 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 [2024-11-09 10:02:33,487 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 [2024-11-09 10:02:33,492 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 [2024-11-09 10:02:33,605 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:33,606 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 [2024-11-09 10:02:33,617 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 [2024-11-09 10:02:33,691 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:33,691 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 [2024-11-09 10:02:33,701 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 [2024-11-09 10:02:33,720 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 [2024-11-09 10:02:33,725 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 [2024-11-09 10:02:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:33,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:33,798 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 [2024-11-09 10:02:33,907 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 [2024-11-09 10:02:33,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68699192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:33,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:33,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2024-11-09 10:02:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805947402] [2024-11-09 10:02:33,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:33,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:02:33,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:33,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:02:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=340, Unknown=15, NotChecked=78, Total=506 [2024-11-09 10:02:33,912 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) [2024-11-09 10:02:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:35,178 INFO L93 Difference]: Finished difference Result 1379 states and 1740 transitions. [2024-11-09 10:02:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:02:35,178 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 [2024-11-09 10:02:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:35,181 INFO L225 Difference]: With dead ends: 1379 [2024-11-09 10:02:35,181 INFO L226 Difference]: Without dead ends: 1379 [2024-11-09 10:02:35,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=574, Unknown=15, NotChecked=102, Total=812 [2024-11-09 10:02:35,182 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 704 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:35,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 3107 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 10:02:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-09 10:02:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1361. [2024-11-09 10:02:35,206 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) [2024-11-09 10:02:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1717 transitions. [2024-11-09 10:02:35,211 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1717 transitions. Word has length 97 [2024-11-09 10:02:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:35,211 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1717 transitions. [2024-11-09 10:02:35,211 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) [2024-11-09 10:02:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1717 transitions. [2024-11-09 10:02:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 10:02:35,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:35,213 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] [2024-11-09 10:02:35,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 10:02:35,416 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 [2024-11-09 10:02:35,417 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)] === [2024-11-09 10:02:35,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1729554310, now seen corresponding path program 1 times [2024-11-09 10:02:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:35,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250801391] [2024-11-09 10:02:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:36,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250801391] [2024-11-09 10:02:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250801391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:36,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 10:02:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855793483] [2024-11-09 10:02:36,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:36,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:02:36,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:02:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:02:36,188 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) [2024-11-09 10:02:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:37,840 INFO L93 Difference]: Finished difference Result 1386 states and 1748 transitions. [2024-11-09 10:02:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:02:37,840 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 [2024-11-09 10:02:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:37,842 INFO L225 Difference]: With dead ends: 1386 [2024-11-09 10:02:37,843 INFO L226 Difference]: Without dead ends: 1386 [2024-11-09 10:02:37,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:02:37,844 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 724 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:37,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 5830 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3693 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 10:02:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-09 10:02:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1382. [2024-11-09 10:02:37,859 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) [2024-11-09 10:02:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1742 transitions. [2024-11-09 10:02:37,862 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1742 transitions. Word has length 99 [2024-11-09 10:02:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:37,862 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1742 transitions. [2024-11-09 10:02:37,862 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) [2024-11-09 10:02:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1742 transitions. [2024-11-09 10:02:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 10:02:37,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:37,863 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] [2024-11-09 10:02:37,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 10:02:37,864 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)] === [2024-11-09 10:02:37,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1729554311, now seen corresponding path program 1 times [2024-11-09 10:02:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567681092] [2024-11-09 10:02:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:38,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:38,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:38,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567681092] [2024-11-09 10:02:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567681092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 10:02:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279546996] [2024-11-09 10:02:38,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:38,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:02:38,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:02:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:02:38,722 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) [2024-11-09 10:02:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:40,008 INFO L93 Difference]: Finished difference Result 1385 states and 1746 transitions. [2024-11-09 10:02:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:02:40,008 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 [2024-11-09 10:02:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:40,011 INFO L225 Difference]: With dead ends: 1385 [2024-11-09 10:02:40,011 INFO L226 Difference]: Without dead ends: 1385 [2024-11-09 10:02:40,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:02:40,012 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 737 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:40,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 2985 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 10:02:40,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2024-11-09 10:02:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2024-11-09 10:02:40,032 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) [2024-11-09 10:02:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1740 transitions. [2024-11-09 10:02:40,035 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1740 transitions. Word has length 99 [2024-11-09 10:02:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:40,035 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1740 transitions. [2024-11-09 10:02:40,035 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) [2024-11-09 10:02:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1740 transitions. [2024-11-09 10:02:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 10:02:40,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:40,037 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] [2024-11-09 10:02:40,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 10:02:40,037 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)] === [2024-11-09 10:02:40,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:40,037 INFO L85 PathProgramCache]: Analyzing trace with hash 131383797, now seen corresponding path program 1 times [2024-11-09 10:02:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:40,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980431751] [2024-11-09 10:02:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:40,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:40,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980431751] [2024-11-09 10:02:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980431751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878574514] [2024-11-09 10:02:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:40,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:40,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:40,644 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) [2024-11-09 10:02:40,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:02:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:40,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:02:40,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:40,909 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 [2024-11-09 10:02:41,032 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 10:02:41,032 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 [2024-11-09 10:02:41,058 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 [2024-11-09 10:02:41,144 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 [2024-11-09 10:02:41,280 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:41,280 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 [2024-11-09 10:02:41,363 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:41,363 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 [2024-11-09 10:02:41,422 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:41,422 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 [2024-11-09 10:02:41,435 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 [2024-11-09 10:02:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:41,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:41,561 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 [2024-11-09 10:02:41,569 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 [2024-11-09 10:02:41,601 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 [2024-11-09 10:02:41,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878574514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:41,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-09 10:02:41,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397711633] [2024-11-09 10:02:41,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:41,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:02:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:02:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=546, Unknown=17, NotChecked=150, Total=812 [2024-11-09 10:02:41,606 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) [2024-11-09 10:02:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:43,503 INFO L93 Difference]: Finished difference Result 1384 states and 1744 transitions. [2024-11-09 10:02:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:02:43,504 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 [2024-11-09 10:02:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:43,506 INFO L225 Difference]: With dead ends: 1384 [2024-11-09 10:02:43,506 INFO L226 Difference]: Without dead ends: 1384 [2024-11-09 10:02:43,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=738, Unknown=17, NotChecked=174, Total=1056 [2024-11-09 10:02:43,507 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 699 mSDsluCounter, 5352 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:43,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 5850 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 10:02:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2024-11-09 10:02:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1381. [2024-11-09 10:02:43,524 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) [2024-11-09 10:02:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1738 transitions. [2024-11-09 10:02:43,526 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1738 transitions. Word has length 100 [2024-11-09 10:02:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:43,527 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1738 transitions. [2024-11-09 10:02:43,527 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) [2024-11-09 10:02:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1738 transitions. [2024-11-09 10:02:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 10:02:43,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:43,528 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] [2024-11-09 10:02:43,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 10:02:43,728 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 [2024-11-09 10:02:43,729 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)] === [2024-11-09 10:02:43,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash 131383798, now seen corresponding path program 1 times [2024-11-09 10:02:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053673336] [2024-11-09 10:02:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:44,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053673336] [2024-11-09 10:02:44,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053673336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14182060] [2024-11-09 10:02:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:44,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:44,771 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) [2024-11-09 10:02:44,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:02:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:45,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 10:02:45,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:45,027 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 [2024-11-09 10:02:45,105 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 [2024-11-09 10:02:45,112 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:02:45,113 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 [2024-11-09 10:02:45,140 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 [2024-11-09 10:02:45,147 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 [2024-11-09 10:02:45,217 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 [2024-11-09 10:02:45,220 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 [2024-11-09 10:02:45,307 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:45,307 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 [2024-11-09 10:02:45,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 10:02:45,389 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:45,390 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 [2024-11-09 10:02:45,404 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 [2024-11-09 10:02:45,473 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:45,474 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 [2024-11-09 10:02:45,481 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 [2024-11-09 10:02:45,525 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 [2024-11-09 10:02:45,527 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 [2024-11-09 10:02:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:45,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:46,029 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1712 (Array Int Int)) (v_ArrVal_1721 (Array Int Int)) (v_ArrVal_1720 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1721))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1720) .cse5 v_ArrVal_1712))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1714 (Array Int Int)) (v_ArrVal_1713 (Array Int Int)) (v_ArrVal_1715 (Array Int Int))) (let ((.cse3 (store .cse4 .cse5 v_ArrVal_1713))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse0 .cse2 v_ArrVal_1714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1715) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) (forall ((v_ArrVal_1712 (Array Int Int)) (v_ArrVal_1721 (Array Int Int)) (v_ArrVal_1720 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1721))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse6 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1720) .cse8 v_ArrVal_1712))) (or (< (+ (select (select .cse6 |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 .cse6 (select (select (store .cse7 .cse8 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 [2024-11-09 10:02:46,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14182060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:46,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-09 10:02:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997009198] [2024-11-09 10:02:46,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:46,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:02:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:02:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=745, Unknown=15, NotChecked=56, Total=930 [2024-11-09 10:02:46,035 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) [2024-11-09 10:02:48,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:48,932 INFO L93 Difference]: Finished difference Result 1383 states and 1742 transitions. [2024-11-09 10:02:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:02:48,932 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 [2024-11-09 10:02:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:48,935 INFO L225 Difference]: With dead ends: 1383 [2024-11-09 10:02:48,935 INFO L226 Difference]: Without dead ends: 1383 [2024-11-09 10:02:48,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=1130, Unknown=15, NotChecked=70, Total=1406 [2024-11-09 10:02:48,939 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 706 mSDsluCounter, 6103 mSDsCounter, 0 mSdLazyCounter, 6079 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:48,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 6604 Invalid, 6096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 6079 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 10:02:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-11-09 10:02:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1359. [2024-11-09 10:02:48,958 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) [2024-11-09 10:02:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1713 transitions. [2024-11-09 10:02:48,960 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1713 transitions. Word has length 100 [2024-11-09 10:02:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:48,961 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1713 transitions. [2024-11-09 10:02:48,961 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) [2024-11-09 10:02:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1713 transitions. [2024-11-09 10:02:48,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 10:02:48,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:48,962 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] [2024-11-09 10:02:48,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:02:49,162 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 [2024-11-09 10:02:49,164 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)] === [2024-11-09 10:02:49,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1569551445, now seen corresponding path program 1 times [2024-11-09 10:02:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016849817] [2024-11-09 10:02:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:49,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:49,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:49,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016849817] [2024-11-09 10:02:49,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016849817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:49,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:49,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 10:02:49,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951388918] [2024-11-09 10:02:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:49,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:02:49,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:49,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:02:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:02:49,718 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) [2024-11-09 10:02:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:50,980 INFO L93 Difference]: Finished difference Result 1390 states and 1750 transitions. [2024-11-09 10:02:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:02:50,981 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 [2024-11-09 10:02:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:50,983 INFO L225 Difference]: With dead ends: 1390 [2024-11-09 10:02:50,983 INFO L226 Difference]: Without dead ends: 1390 [2024-11-09 10:02:50,983 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 [2024-11-09 10:02:50,984 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, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:50,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 4867 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 10:02:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-09 10:02:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1386. [2024-11-09 10:02:50,998 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) [2024-11-09 10:02:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1744 transitions. [2024-11-09 10:02:51,001 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1744 transitions. Word has length 102 [2024-11-09 10:02:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:51,002 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 1744 transitions. [2024-11-09 10:02:51,002 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) [2024-11-09 10:02:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1744 transitions. [2024-11-09 10:02:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 10:02:51,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:51,003 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] [2024-11-09 10:02:51,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 10:02:51,004 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)] === [2024-11-09 10:02:51,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1569551444, now seen corresponding path program 1 times [2024-11-09 10:02:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674485614] [2024-11-09 10:02:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:51,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674485614] [2024-11-09 10:02:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674485614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:02:51,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:02:51,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 10:02:51,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763035695] [2024-11-09 10:02:51,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:02:51,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:02:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:51,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:02:51,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:02:51,885 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) [2024-11-09 10:02:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:53,454 INFO L93 Difference]: Finished difference Result 1389 states and 1748 transitions. [2024-11-09 10:02:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:02:53,454 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 [2024-11-09 10:02:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:53,456 INFO L225 Difference]: With dead ends: 1389 [2024-11-09 10:02:53,457 INFO L226 Difference]: Without dead ends: 1389 [2024-11-09 10:02:53,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-09 10:02:53,458 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 720 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:53,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3820 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 10:02:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-09 10:02:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1386. [2024-11-09 10:02:53,475 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) [2024-11-09 10:02:53,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1742 transitions. [2024-11-09 10:02:53,477 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1742 transitions. Word has length 102 [2024-11-09 10:02:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:53,478 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 1742 transitions. [2024-11-09 10:02:53,478 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) [2024-11-09 10:02:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1742 transitions. [2024-11-09 10:02:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 10:02:53,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:53,479 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] [2024-11-09 10:02:53,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 10:02:53,480 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)] === [2024-11-09 10:02:53,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1340139228, now seen corresponding path program 1 times [2024-11-09 10:02:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447260600] [2024-11-09 10:02:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:54,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447260600] [2024-11-09 10:02:54,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447260600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161978179] [2024-11-09 10:02:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:54,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:54,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:54,211 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) [2024-11-09 10:02:54,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:02:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:54,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 10:02:54,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:54,512 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 [2024-11-09 10:02:54,725 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:02:54,726 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 [2024-11-09 10:02:54,759 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 [2024-11-09 10:02:54,769 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 [2024-11-09 10:02:54,918 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:54,918 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 51 treesize of output 48 [2024-11-09 10:02:54,924 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 [2024-11-09 10:02:54,940 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 19 treesize of output 7 [2024-11-09 10:02:54,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 10:02:54,970 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2024-11-09 10:02:55,030 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:55,030 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 [2024-11-09 10:02:55,081 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:55,081 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 [2024-11-09 10:02:55,123 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 [2024-11-09 10:02:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:55,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:02:55,142 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-09 10:02:55,143 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 [2024-11-09 10:02:55,181 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-09 10:02:55,187 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int)) (v_ArrVal_2060 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2060)) (.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-09 10:02:55,192 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int)) (v_ArrVal_2060 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2060))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_2061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-09 10:02:55,201 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int)) (v_ArrVal_2060 (Array Int Int)) (v_ArrVal_2058 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base|) (+ |c_ULTIMATE.start_main_#t~mem56#1.offset| 16) v_ArrVal_2058)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2060)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-09 10:02:55,214 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int)) (v_ArrVal_2060 (Array Int Int)) (v_ArrVal_2058 Int) (|v_ULTIMATE.start_main_#t~mem56#1.offset_19| Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (or (let ((.cse1 (let ((.cse3 (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store |c_#memory_$Pointer$#2.base| .cse4 (store (select |c_#memory_$Pointer$#2.base| .cse4) (+ 16 |v_ULTIMATE.start_main_#t~mem56#1.offset_19|) v_ArrVal_2058))))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2060)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (< |v_ULTIMATE.start_main_#t~mem56#1.offset_19| (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-09 10:02:55,269 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2061 (Array Int Int)) (v_ArrVal_2060 (Array Int Int)) (v_ArrVal_2058 Int) (v_ArrVal_2067 (Array Int Int)) (|v_ULTIMATE.start_main_#t~mem56#1.offset_19| Int) (v_ArrVal_2066 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (or (< |v_ULTIMATE.start_main_#t~mem56#1.offset_19| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2067))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (store .cse4 .cse5 (store (select .cse4 .cse5) (+ 16 |v_ULTIMATE.start_main_#t~mem56#1.offset_19|) v_ArrVal_2058)))))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2060)))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (= .cse1 (select (select (store .cse2 .cse1 v_ArrVal_2061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))))) is different from false [2024-11-09 10:02:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161978179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:55,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:02:55,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2024-11-09 10:02:55,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185885417] [2024-11-09 10:02:55,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:02:55,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 10:02:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:02:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 10:02:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=719, Unknown=14, NotChecked=354, Total=1190 [2024-11-09 10:02:55,274 INFO L87 Difference]: Start difference. First operand 1386 states and 1742 transitions. Second operand has 28 states, 25 states have (on average 7.84) internal successors, (196), 27 states have internal predecessors, (196), 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) [2024-11-09 10:02:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:02:57,806 INFO L93 Difference]: Finished difference Result 1683 states and 2114 transitions. [2024-11-09 10:02:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:02:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.84) internal successors, (196), 27 states have internal predecessors, (196), 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 [2024-11-09 10:02:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:02:57,809 INFO L225 Difference]: With dead ends: 1683 [2024-11-09 10:02:57,809 INFO L226 Difference]: Without dead ends: 1683 [2024-11-09 10:02:57,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=1424, Unknown=14, NotChecked=498, Total=2162 [2024-11-09 10:02:57,811 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 952 mSDsluCounter, 8703 mSDsCounter, 0 mSdLazyCounter, 5575 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 9213 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:02:57,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 9213 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5575 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 10:02:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2024-11-09 10:02:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1385. [2024-11-09 10:02:57,827 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) [2024-11-09 10:02:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1740 transitions. [2024-11-09 10:02:57,829 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1740 transitions. Word has length 103 [2024-11-09 10:02:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:02:57,829 INFO L471 AbstractCegarLoop]: Abstraction has 1385 states and 1740 transitions. [2024-11-09 10:02:57,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.84) internal successors, (196), 27 states have internal predecessors, (196), 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) [2024-11-09 10:02:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1740 transitions. [2024-11-09 10:02:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 10:02:57,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:02:57,830 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] [2024-11-09 10:02:57,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:02:58,034 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 [2024-11-09 10:02:58,035 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)] === [2024-11-09 10:02:58,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:02:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1340139229, now seen corresponding path program 1 times [2024-11-09 10:02:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:02:58,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157626686] [2024-11-09 10:02:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:02:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:59,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:02:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:59,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:02:59,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157626686] [2024-11-09 10:02:59,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157626686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:02:59,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227566188] [2024-11-09 10:02:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:02:59,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:02:59,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:02:59,199 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) [2024-11-09 10:02:59,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:02:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:02:59,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 10:02:59,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:02:59,451 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 [2024-11-09 10:02:59,525 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:02:59,526 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 [2024-11-09 10:02:59,531 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 [2024-11-09 10:02:59,552 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 [2024-11-09 10:02:59,555 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 [2024-11-09 10:02:59,627 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 [2024-11-09 10:02:59,630 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 [2024-11-09 10:02:59,710 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:59,710 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 [2024-11-09 10:02:59,720 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 [2024-11-09 10:02:59,777 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:59,778 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 [2024-11-09 10:02:59,783 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 [2024-11-09 10:02:59,827 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:59,828 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 [2024-11-09 10:02:59,834 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 [2024-11-09 10:02:59,882 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:02:59,882 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 [2024-11-09 10:02:59,886 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 [2024-11-09 10:02:59,898 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 [2024-11-09 10:02:59,902 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 [2024-11-09 10:02:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:02:59,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:03:00,015 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2252 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2252 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-09 10:03:00,030 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2251))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2250) .cse0 v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2250) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2024-11-09 10:03:00,106 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2249 (Array Int Int)) (v_ArrVal_2248 (Array Int Int)) (v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2249))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_2251))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2248) .cse0 v_ArrVal_2250) .cse1 v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_2253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_2249 (Array Int Int)) (v_ArrVal_2248 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2249))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2248) .cse5 v_ArrVal_2250) (select (select (store .cse6 .cse5 v_ArrVal_2251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2252))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20))))) is different from false [2024-11-09 10:03:00,147 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_2249 (Array Int Int)) (v_ArrVal_2248 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2249))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2248) .cse1 v_ArrVal_2250) (select (select (store .cse2 .cse1 v_ArrVal_2251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2252))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_2249 (Array Int Int)) (v_ArrVal_2248 (Array Int Int)) (v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2249))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2251))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2248) .cse4 v_ArrVal_2250) .cse5 v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_2253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))) is different from false [2024-11-09 10:03:00,225 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2249 (Array Int Int)) (v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2248 (Array Int Int)) (v_ArrVal_2258 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2259))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2249))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2258) .cse0 v_ArrVal_2248) .cse1 v_ArrVal_2250) (select (select (store .cse2 .cse1 v_ArrVal_2251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2252))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_2249 (Array Int Int)) (v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2248 (Array Int Int)) (v_ArrVal_2258 (Array Int Int)) (v_ArrVal_2253 (Array Int Int)) (v_ArrVal_2252 (Array Int Int)) (v_ArrVal_2251 (Array Int Int)) (v_ArrVal_2250 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2259))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2249))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2251))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2258) .cse5 v_ArrVal_2248) .cse6 v_ArrVal_2250) .cse7 v_ArrVal_2252) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_2253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-09 10:03:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227566188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:03:00,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:03:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-11-09 10:03:00,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830610854] [2024-11-09 10:03:00,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:03:00,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:03:00,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:03:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:03:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=695, Unknown=21, NotChecked=290, Total=1122 [2024-11-09 10:03:00,231 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) [2024-11-09 10:03:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:03:03,270 INFO L93 Difference]: Finished difference Result 1387 states and 1744 transitions. [2024-11-09 10:03:03,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:03:03,271 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 [2024-11-09 10:03:03,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:03:03,273 INFO L225 Difference]: With dead ends: 1387 [2024-11-09 10:03:03,273 INFO L226 Difference]: Without dead ends: 1387 [2024-11-09 10:03:03,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=1138, Unknown=21, NotChecked=370, Total=1722 [2024-11-09 10:03:03,275 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 701 mSDsluCounter, 6107 mSDsCounter, 0 mSdLazyCounter, 6076 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 6607 SdHoareTripleChecker+Invalid, 6092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 10:03:03,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 6607 Invalid, 6092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6076 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 10:03:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2024-11-09 10:03:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1357. [2024-11-09 10:03:03,288 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) [2024-11-09 10:03:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1709 transitions. [2024-11-09 10:03:03,290 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1709 transitions. Word has length 103 [2024-11-09 10:03:03,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:03:03,290 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1709 transitions. [2024-11-09 10:03:03,290 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) [2024-11-09 10:03:03,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1709 transitions. [2024-11-09 10:03:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 10:03:03,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:03:03,291 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] [2024-11-09 10:03:03,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 10:03:03,491 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 [2024-11-09 10:03:03,492 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)] === [2024-11-09 10:03:03,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:03:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash -891994195, now seen corresponding path program 1 times [2024-11-09 10:03:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:03:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473283543] [2024-11-09 10:03:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:03:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:03:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:03:04,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 10:03:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:03:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:03:04,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:03:04,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473283543] [2024-11-09 10:03:04,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473283543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:03:04,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:03:04,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-09 10:03:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950726679] [2024-11-09 10:03:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:03:04,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:03:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:03:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:03:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:03:04,310 INFO L87 Difference]: Start difference. First operand 1357 states and 1709 transitions. Second operand has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 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)