./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_append_unequal.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 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:56:32,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:56:32,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 14:56:32,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:56:32,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:56:32,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:56:32,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:56:32,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:56:32,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:56:32,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:56:32,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:56:32,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:56:32,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:56:32,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:56:32,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:56:32,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:56:32,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 14:56:32,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:56:32,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 14:56:32,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:56:32,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:56:32,243 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:56:32,243 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:56:32,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:56:32,244 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:56:32,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:56:32,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:56:32,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 14:56:32,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:56:32,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:56:32,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:56:32,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:56:32,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:56:32,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:56:32,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:56:32,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:56:32,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:56:32,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:56:32,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:56:32,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:56:32,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:56:32,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:56:32,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2024-11-20 14:56:32,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:56:32,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:56:32,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:56:32,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:56:32,539 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:56:32,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2024-11-20 14:56:33,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:56:34,209 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:56:34,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2024-11-20 14:56:34,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec94000d1/697f531f229640fa9be7946256a4d616/FLAGd1f6ab0ce [2024-11-20 14:56:34,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec94000d1/697f531f229640fa9be7946256a4d616 [2024-11-20 14:56:34,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:56:34,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:56:34,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:56:34,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:56:34,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:56:34,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:56:34" (1/1) ... [2024-11-20 14:56:34,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634aa76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:34, skipping insertion in model container [2024-11-20 14:56:34,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:56:34" (1/1) ... [2024-11-20 14:56:34,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:56:34,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:56:34,954 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:56:34,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:56:35,025 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:56:35,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35 WrapperNode [2024-11-20 14:56:35,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:56:35,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:56:35,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:56:35,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:56:35,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,080 INFO L138 Inliner]: procedures = 127, calls = 41, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 145 [2024-11-20 14:56:35,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:56:35,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:56:35,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:56:35,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:56:35,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,114 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 16, 6]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 9 writes are split as follows [0, 8, 1]. [2024-11-20 14:56:35,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:56:35,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:56:35,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:56:35,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:56:35,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (1/1) ... [2024-11-20 14:56:35,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:56:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:35,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 14:56:35,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 14:56:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-20 14:56:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 14:56:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 14:56:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 14:56:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 14:56:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 14:56:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 14:56:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 14:56:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 14:56:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 14:56:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:56:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 14:56:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 14:56:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-20 14:56:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 14:56:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 14:56:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 14:56:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:56:35,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:56:35,332 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:56:35,334 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:56:35,731 INFO L? ?]: Removed 122 outVars from TransFormulas that were not future-live. [2024-11-20 14:56:35,731 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:56:35,746 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:56:35,747 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 14:56:35,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:56:35 BoogieIcfgContainer [2024-11-20 14:56:35,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:56:35,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:56:35,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:56:35,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:56:35,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:56:34" (1/3) ... [2024-11-20 14:56:35,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b64f555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:56:35, skipping insertion in model container [2024-11-20 14:56:35,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:56:35" (2/3) ... [2024-11-20 14:56:35,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b64f555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:56:35, skipping insertion in model container [2024-11-20 14:56:35,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:56:35" (3/3) ... [2024-11-20 14:56:35,757 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2024-11-20 14:56:35,773 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:56:35,773 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2024-11-20 14:56:35,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:56:35,818 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;@ceaf0d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:56:35,818 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-20 14:56:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 108 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 14:56:35,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:35,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:35,829 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:35,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1816241367, now seen corresponding path program 1 times [2024-11-20 14:56:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107439160] [2024-11-20 14:56:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:36,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107439160] [2024-11-20 14:56:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107439160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:36,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:36,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:56:36,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540398413] [2024-11-20 14:56:36,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:36,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:56:36,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:56:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:56:36,107 INFO L87 Difference]: Start difference. First operand has 112 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 108 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:56:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:36,233 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2024-11-20 14:56:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:56:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-20 14:56:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:36,243 INFO L225 Difference]: With dead ends: 108 [2024-11-20 14:56:36,243 INFO L226 Difference]: Without dead ends: 105 [2024-11-20 14:56:36,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:56:36,250 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:36,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 174 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-20 14:56:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-20 14:56:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 58 states have (on average 1.896551724137931) internal successors, (110), 101 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2024-11-20 14:56:36,296 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 7 [2024-11-20 14:56:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:36,298 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2024-11-20 14:56:36,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:56:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2024-11-20 14:56:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 14:56:36,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:36,299 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:36,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 14:56:36,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:36,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1816241368, now seen corresponding path program 1 times [2024-11-20 14:56:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738699189] [2024-11-20 14:56:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:36,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738699189] [2024-11-20 14:56:36,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738699189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:36,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:56:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872815729] [2024-11-20 14:56:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:36,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:56:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:56:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:56:36,476 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:56:36,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:36,555 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2024-11-20 14:56:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:56:36,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-20 14:56:36,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:36,557 INFO L225 Difference]: With dead ends: 102 [2024-11-20 14:56:36,557 INFO L226 Difference]: Without dead ends: 102 [2024-11-20 14:56:36,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:56:36,558 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:36,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 173 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-20 14:56:36,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-20 14:56:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 58 states have (on average 1.8448275862068966) internal successors, (107), 98 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2024-11-20 14:56:36,573 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 7 [2024-11-20 14:56:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:36,573 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2024-11-20 14:56:36,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:56:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2024-11-20 14:56:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 14:56:36,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:36,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:36,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 14:56:36,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:36,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2097530290, now seen corresponding path program 1 times [2024-11-20 14:56:36,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600657207] [2024-11-20 14:56:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:36,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:37,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600657207] [2024-11-20 14:56:37,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600657207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:37,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:56:37,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430045550] [2024-11-20 14:56:37,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:37,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:56:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:56:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:37,048 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:37,310 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2024-11-20 14:56:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:56:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2024-11-20 14:56:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:37,313 INFO L225 Difference]: With dead ends: 100 [2024-11-20 14:56:37,313 INFO L226 Difference]: Without dead ends: 100 [2024-11-20 14:56:37,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:37,315 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 7 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:37,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 372 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:56:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-20 14:56:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-20 14:56:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 58 states have (on average 1.8103448275862069) internal successors, (105), 96 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2024-11-20 14:56:37,325 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 14 [2024-11-20 14:56:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:37,326 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2024-11-20 14:56:37,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2024-11-20 14:56:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 14:56:37,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:37,328 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:37,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 14:56:37,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:37,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2097530291, now seen corresponding path program 1 times [2024-11-20 14:56:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:37,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786757015] [2024-11-20 14:56:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:37,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:37,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:37,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786757015] [2024-11-20 14:56:37,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786757015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:37,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:37,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:56:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846576160] [2024-11-20 14:56:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:37,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:56:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:56:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:37,503 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:37,710 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2024-11-20 14:56:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:56:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2024-11-20 14:56:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:37,712 INFO L225 Difference]: With dead ends: 98 [2024-11-20 14:56:37,712 INFO L226 Difference]: Without dead ends: 98 [2024-11-20 14:56:37,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:37,713 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 8 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:37,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 356 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:56:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-20 14:56:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-20 14:56:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.7758620689655173) internal successors, (103), 94 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2024-11-20 14:56:37,722 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 14 [2024-11-20 14:56:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:37,722 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2024-11-20 14:56:37,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2024-11-20 14:56:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 14:56:37,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:37,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:37,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 14:56:37,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:37,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -493202511, now seen corresponding path program 1 times [2024-11-20 14:56:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934683892] [2024-11-20 14:56:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:37,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:37,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-20 14:56:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:37,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:37,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934683892] [2024-11-20 14:56:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934683892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:37,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:56:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955359866] [2024-11-20 14:56:37,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:37,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:56:37,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:56:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:56:37,810 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:37,905 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2024-11-20 14:56:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:56:37,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 16 [2024-11-20 14:56:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:37,906 INFO L225 Difference]: With dead ends: 108 [2024-11-20 14:56:37,906 INFO L226 Difference]: Without dead ends: 108 [2024-11-20 14:56:37,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:56:37,908 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 9 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:37,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 248 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-20 14:56:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2024-11-20 14:56:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 95 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2024-11-20 14:56:37,922 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 16 [2024-11-20 14:56:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:37,923 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2024-11-20 14:56:37,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2024-11-20 14:56:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-20 14:56:37,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:37,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:37,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 14:56:37,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:37,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -45722425, now seen corresponding path program 1 times [2024-11-20 14:56:37,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:37,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671834757] [2024-11-20 14:56:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:37,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:37,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671834757] [2024-11-20 14:56:38,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671834757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:38,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:38,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:56:38,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379789861] [2024-11-20 14:56:38,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:38,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:56:38,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:38,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:56:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:56:38,014 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:38,108 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2024-11-20 14:56:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:56:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2024-11-20 14:56:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:38,110 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:56:38,110 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:56:38,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:56:38,111 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:38,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:56:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-20 14:56:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 63 states have (on average 1.7142857142857142) internal successors, (108), 99 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2024-11-20 14:56:38,126 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 17 [2024-11-20 14:56:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:38,126 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2024-11-20 14:56:38,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:56:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2024-11-20 14:56:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 14:56:38,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:38,127 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:38,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 14:56:38,127 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:38,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 714012245, now seen corresponding path program 1 times [2024-11-20 14:56:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:38,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676920804] [2024-11-20 14:56:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:38,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:38,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-20 14:56:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:56:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676920804] [2024-11-20 14:56:38,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676920804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454527030] [2024-11-20 14:56:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:38,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:38,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:38,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:38,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 14:56:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:38,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 14:56:38,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:38,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:56:38,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454527030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:56:38,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:56:38,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2024-11-20 14:56:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766308852] [2024-11-20 14:56:38,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:38,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:56:38,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:56:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:56:38,574 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 14:56:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:38,675 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2024-11-20 14:56:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:56:38,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-20 14:56:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:38,676 INFO L225 Difference]: With dead ends: 106 [2024-11-20 14:56:38,677 INFO L226 Difference]: Without dead ends: 106 [2024-11-20 14:56:38,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:56:38,677 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 9 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:38,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 255 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-20 14:56:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-20 14:56:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 101 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2024-11-20 14:56:38,683 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 31 [2024-11-20 14:56:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:38,684 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2024-11-20 14:56:38,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 14:56:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2024-11-20 14:56:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-20 14:56:38,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:38,685 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:38,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 14:56:38,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:38,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:38,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1276770653, now seen corresponding path program 1 times [2024-11-20 14:56:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471465317] [2024-11-20 14:56:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:38,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:39,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:39,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:56:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471465317] [2024-11-20 14:56:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471465317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421544155] [2024-11-20 14:56:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:39,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:39,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 14:56:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:39,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 14:56:39,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:39,420 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-20 14:56:39,520 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 14:56:39,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 14:56:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:56:39,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421544155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:39,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:56:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2024-11-20 14:56:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118661947] [2024-11-20 14:56:39,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:39,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:56:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:56:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=107, Unknown=1, NotChecked=20, Total=156 [2024-11-20 14:56:39,598 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 14:56:39,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:39,928 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2024-11-20 14:56:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:56:39,929 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-20 14:56:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:39,929 INFO L225 Difference]: With dead ends: 105 [2024-11-20 14:56:39,929 INFO L226 Difference]: Without dead ends: 105 [2024-11-20 14:56:39,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=196, Unknown=1, NotChecked=28, Total=272 [2024-11-20 14:56:39,930 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 5 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:39,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 415 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 106 Unchecked, 0.3s Time] [2024-11-20 14:56:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-20 14:56:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-20 14:56:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 65 states have (on average 1.676923076923077) internal successors, (109), 100 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2024-11-20 14:56:39,941 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 32 [2024-11-20 14:56:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:39,941 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2024-11-20 14:56:39,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 14:56:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2024-11-20 14:56:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-20 14:56:39,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:39,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:39,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 14:56:40,143 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,SelfDestructingSolverStorable7 [2024-11-20 14:56:40,144 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:40,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1276770652, now seen corresponding path program 1 times [2024-11-20 14:56:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825533265] [2024-11-20 14:56:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:40,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:40,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:56:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825533265] [2024-11-20 14:56:40,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825533265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638812012] [2024-11-20 14:56:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:40,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:40,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:40,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:40,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 14:56:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:40,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 14:56:40,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:40,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 14:56:41,146 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-20 14:56:41,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:41,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:41,213 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:56:41,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:56:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-20 14:56:41,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638812012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:41,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:56:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2024-11-20 14:56:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564543458] [2024-11-20 14:56:41,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:41,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 14:56:41,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 14:56:41,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=329, Unknown=1, NotChecked=36, Total=420 [2024-11-20 14:56:41,376 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 15 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 14:56:41,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:41,889 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2024-11-20 14:56:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:56:41,890 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 15 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-20 14:56:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:41,892 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:56:41,892 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:56:41,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=476, Unknown=1, NotChecked=44, Total=600 [2024-11-20 14:56:41,893 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 5 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:41,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 739 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 654 Invalid, 0 Unknown, 105 Unchecked, 0.4s Time] [2024-11-20 14:56:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:56:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-20 14:56:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 99 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2024-11-20 14:56:41,902 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 32 [2024-11-20 14:56:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:41,903 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2024-11-20 14:56:41,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 15 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 14:56:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2024-11-20 14:56:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 14:56:41,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:41,904 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:41,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 14:56:42,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:42,105 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:42,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1274296113, now seen corresponding path program 2 times [2024-11-20 14:56:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:42,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521349843] [2024-11-20 14:56:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:42,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:42,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:42,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-20 14:56:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 14:56:42,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521349843] [2024-11-20 14:56:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521349843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17374267] [2024-11-20 14:56:42,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:56:42,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:42,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:42,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:42,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 14:56:42,525 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:56:42,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:56:42,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 14:56:42,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:56:42,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 14:56:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17374267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:56:42,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:56:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2024-11-20 14:56:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429943610] [2024-11-20 14:56:42,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:42,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 14:56:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 14:56:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:56:42,619 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 14:56:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:42,766 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-11-20 14:56:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:56:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-20 14:56:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:42,767 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:56:42,768 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:56:42,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:56:42,768 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 4 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:42,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 597 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:56:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-20 14:56:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.646153846153846) internal successors, (107), 99 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2024-11-20 14:56:42,774 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 46 [2024-11-20 14:56:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:42,774 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2024-11-20 14:56:42,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 14:56:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2024-11-20 14:56:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-20 14:56:42,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:42,783 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:42,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 14:56:42,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:42,984 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:42,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2029013929, now seen corresponding path program 1 times [2024-11-20 14:56:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458706560] [2024-11-20 14:56:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:43,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:43,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:43,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 14:56:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458706560] [2024-11-20 14:56:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458706560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251772218] [2024-11-20 14:56:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:43,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:43,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:43,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:43,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 14:56:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:43,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 14:56:43,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:43,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:56:43,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:43,707 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) is different from true [2024-11-20 14:56:43,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:43,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:43,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:43,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:43,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:43,846 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2024-11-20 14:56:43,872 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-20 14:56:43,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-20 14:56:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 14 not checked. [2024-11-20 14:56:43,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251772218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:44,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:56:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2024-11-20 14:56:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111221019] [2024-11-20 14:56:44,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:44,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 14:56:44,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 14:56:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=121, Unknown=2, NotChecked=46, Total=210 [2024-11-20 14:56:44,039 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-20 14:56:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:44,354 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2024-11-20 14:56:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:56:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-11-20 14:56:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:44,356 INFO L225 Difference]: With dead ends: 111 [2024-11-20 14:56:44,356 INFO L226 Difference]: Without dead ends: 111 [2024-11-20 14:56:44,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=186, Unknown=2, NotChecked=58, Total=306 [2024-11-20 14:56:44,357 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 151 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:44,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 288 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 318 Invalid, 0 Unknown, 212 Unchecked, 0.2s Time] [2024-11-20 14:56:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-20 14:56:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2024-11-20 14:56:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 94 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2024-11-20 14:56:44,364 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 47 [2024-11-20 14:56:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:44,365 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2024-11-20 14:56:44,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-20 14:56:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2024-11-20 14:56:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-20 14:56:44,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:44,366 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:44,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 14:56:44,566 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,SelfDestructingSolverStorable10 [2024-11-20 14:56:44,567 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:44,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2029013930, now seen corresponding path program 1 times [2024-11-20 14:56:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:44,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109473220] [2024-11-20 14:56:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:45,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:45,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:45,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:56:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109473220] [2024-11-20 14:56:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109473220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674258871] [2024-11-20 14:56:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:45,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:45,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:45,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 14:56:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:45,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 14:56:45,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:45,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 14:56:45,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:45,482 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true [2024-11-20 14:56:45,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:45,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:45,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:45,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:45,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:45,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:45,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:45,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-20 14:56:45,779 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:56:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674258871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:56:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-20 14:56:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553375496] [2024-11-20 14:56:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:45,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:56:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:56:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=143, Unknown=1, NotChecked=24, Total=210 [2024-11-20 14:56:45,782 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:45,876 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2024-11-20 14:56:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:56:45,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-20 14:56:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:45,878 INFO L225 Difference]: With dead ends: 96 [2024-11-20 14:56:45,878 INFO L226 Difference]: Without dead ends: 96 [2024-11-20 14:56:45,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=166, Unknown=1, NotChecked=26, Total=240 [2024-11-20 14:56:45,879 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 4 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:45,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 232 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2024-11-20 14:56:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-20 14:56:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-20 14:56:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.523076923076923) internal successors, (99), 91 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2024-11-20 14:56:45,882 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 47 [2024-11-20 14:56:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:45,883 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2024-11-20 14:56:45,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2024-11-20 14:56:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 14:56:45,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:45,884 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:45,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 14:56:46,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:46,084 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:46,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1423390737, now seen corresponding path program 1 times [2024-11-20 14:56:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722378614] [2024-11-20 14:56:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:46,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:46,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:46,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 14:56:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:46,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722378614] [2024-11-20 14:56:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722378614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850186546] [2024-11-20 14:56:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:46,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:46,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 14:56:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:46,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-20 14:56:46,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:46,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-20 14:56:46,956 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-20 14:56:47,004 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-20 14:56:47,004 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 23 treesize of output 24 [2024-11-20 14:56:47,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 14:56:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 14:56:47,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:56:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850186546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:47,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:56:47,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2024-11-20 14:56:47,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510693449] [2024-11-20 14:56:47,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:47,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 14:56:47,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:47,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 14:56:47,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=333, Unknown=1, NotChecked=36, Total=420 [2024-11-20 14:56:47,031 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:47,189 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-11-20 14:56:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 14:56:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 51 [2024-11-20 14:56:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:47,190 INFO L225 Difference]: With dead ends: 95 [2024-11-20 14:56:47,191 INFO L226 Difference]: Without dead ends: 95 [2024-11-20 14:56:47,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=368, Unknown=1, NotChecked=38, Total=462 [2024-11-20 14:56:47,192 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 10 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:47,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 320 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 167 Unchecked, 0.1s Time] [2024-11-20 14:56:47,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-20 14:56:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-20 14:56:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.5) internal successors, (99), 90 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2024-11-20 14:56:47,196 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 51 [2024-11-20 14:56:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:47,197 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2024-11-20 14:56:47,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:56:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2024-11-20 14:56:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 14:56:47,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:47,199 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:47,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 14:56:47,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:47,403 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:47,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1423390736, now seen corresponding path program 1 times [2024-11-20 14:56:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060793802] [2024-11-20 14:56:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:47,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:47,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:48,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 14:56:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060793802] [2024-11-20 14:56:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060793802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644847699] [2024-11-20 14:56:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:48,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:48,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 14:56:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:48,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-20 14:56:48,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:48,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-20 14:56:48,803 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-20 14:56:48,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-20 14:56:48,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 14:56:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 14:56:48,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:49,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644847699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:49,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:56:49,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2024-11-20 14:56:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573512791] [2024-11-20 14:56:49,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:49,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-20 14:56:49,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:49,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-20 14:56:49,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 14:56:49,187 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 30 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 14:56:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:50,261 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2024-11-20 14:56:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 14:56:50,261 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 51 [2024-11-20 14:56:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:50,262 INFO L225 Difference]: With dead ends: 109 [2024-11-20 14:56:50,262 INFO L226 Difference]: Without dead ends: 109 [2024-11-20 14:56:50,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2024-11-20 14:56:50,263 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 81 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:50,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1091 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 14:56:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-20 14:56:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2024-11-20 14:56:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 100 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2024-11-20 14:56:50,267 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 51 [2024-11-20 14:56:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:50,267 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2024-11-20 14:56:50,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 14:56:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2024-11-20 14:56:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 14:56:50,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:50,268 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:50,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 14:56:50,469 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,SelfDestructingSolverStorable13 [2024-11-20 14:56:50,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:50,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1423543604, now seen corresponding path program 1 times [2024-11-20 14:56:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853047609] [2024-11-20 14:56:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:50,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:50,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:50,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 14:56:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853047609] [2024-11-20 14:56:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853047609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812016916] [2024-11-20 14:56:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:50,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:50,820 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:50,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 14:56:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:51,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 14:56:51,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:51,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 14:56:51,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:56:51,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:51,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:51,171 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:56:51,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:56:51,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:51,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:51,275 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true [2024-11-20 14:56:51,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:51,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:51,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:56:51,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:51,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:56:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 14 not checked. [2024-11-20 14:56:51,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:51,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812016916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:51,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:56:51,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2024-11-20 14:56:51,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137484369] [2024-11-20 14:56:51,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:51,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 14:56:51,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:51,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 14:56:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=366, Unknown=1, NotChecked=38, Total=462 [2024-11-20 14:56:51,578 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 15 states have internal predecessors, (71), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 14:56:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:52,142 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2024-11-20 14:56:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 14:56:52,143 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 15 states have internal predecessors, (71), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 51 [2024-11-20 14:56:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:52,144 INFO L225 Difference]: With dead ends: 103 [2024-11-20 14:56:52,144 INFO L226 Difference]: Without dead ends: 103 [2024-11-20 14:56:52,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=855, Unknown=1, NotChecked=60, Total=1056 [2024-11-20 14:56:52,145 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:52,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 667 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 837 Invalid, 0 Unknown, 90 Unchecked, 0.4s Time] [2024-11-20 14:56:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-20 14:56:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-20 14:56:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4) internal successors, (105), 97 states have internal predecessors, (105), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2024-11-20 14:56:52,152 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 51 [2024-11-20 14:56:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:52,153 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2024-11-20 14:56:52,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 15 states have internal predecessors, (71), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 14:56:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2024-11-20 14:56:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 14:56:52,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:52,154 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:52,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 14:56:52,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 14:56:52,355 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:52,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash -21300460, now seen corresponding path program 1 times [2024-11-20 14:56:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125047503] [2024-11-20 14:56:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-20 14:56:52,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:52,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125047503] [2024-11-20 14:56:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125047503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:52,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:56:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839755506] [2024-11-20 14:56:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:52,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:56:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:52,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:56:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:52,547 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 14:56:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:52,688 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2024-11-20 14:56:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:56:52,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2024-11-20 14:56:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:52,689 INFO L225 Difference]: With dead ends: 102 [2024-11-20 14:56:52,690 INFO L226 Difference]: Without dead ends: 102 [2024-11-20 14:56:52,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:52,690 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 8 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:52,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 301 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-20 14:56:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-20 14:56:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.3866666666666667) internal successors, (104), 96 states have internal predecessors, (104), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2024-11-20 14:56:52,695 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 54 [2024-11-20 14:56:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:52,695 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2024-11-20 14:56:52,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 14:56:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2024-11-20 14:56:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 14:56:52,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:52,697 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:52,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 14:56:52,697 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:52,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -21300459, now seen corresponding path program 1 times [2024-11-20 14:56:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:52,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044278757] [2024-11-20 14:56:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-20 14:56:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:52,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044278757] [2024-11-20 14:56:52,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044278757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:56:52,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:56:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:56:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834429040] [2024-11-20 14:56:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:56:52,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:56:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:56:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:52,997 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 14:56:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:53,119 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2024-11-20 14:56:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:56:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2024-11-20 14:56:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:53,121 INFO L225 Difference]: With dead ends: 101 [2024-11-20 14:56:53,121 INFO L226 Difference]: Without dead ends: 101 [2024-11-20 14:56:53,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:56:53,122 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 7 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:53,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 309 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:56:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-20 14:56:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-20 14:56:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 95 states have internal predecessors, (103), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-11-20 14:56:53,126 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 54 [2024-11-20 14:56:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:53,126 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-11-20 14:56:53,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 14:56:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-11-20 14:56:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 14:56:53,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:53,127 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:53,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 14:56:53,128 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:53,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:53,129 INFO L85 PathProgramCache]: Analyzing trace with hash -660261595, now seen corresponding path program 1 times [2024-11-20 14:56:53,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:53,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668009462] [2024-11-20 14:56:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:53,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:53,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:53,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:54,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 14:56:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668009462] [2024-11-20 14:56:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668009462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059354075] [2024-11-20 14:56:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:54,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:54,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:54,422 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:54,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 14:56:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:54,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-20 14:56:54,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:56:54,869 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:56:54,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:56:54,964 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 13 treesize of output 9 [2024-11-20 14:56:55,012 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 14:56:55,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-20 14:56:55,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 14 [2024-11-20 14:56:55,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 14:56:55,328 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#1.base| |node_create_~temp~0#1.base|))) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1)))) is different from true [2024-11-20 14:56:55,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:56:55,354 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 50 treesize of output 39 [2024-11-20 14:56:55,385 INFO L349 Elim1Store]: treesize reduction 90, result has 37.9 percent of original size [2024-11-20 14:56:55,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 69 [2024-11-20 14:56:55,522 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 84 treesize of output 56 [2024-11-20 14:56:55,531 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 51 treesize of output 35 [2024-11-20 14:56:55,696 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 41 treesize of output 17 [2024-11-20 14:56:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-20 14:56:55,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:56:56,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059354075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:56,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:56:56,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2024-11-20 14:56:56,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835105026] [2024-11-20 14:56:56,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:56:56,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-20 14:56:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:56:56,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-20 14:56:56,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2481, Unknown=1, NotChecked=100, Total=2756 [2024-11-20 14:56:56,037 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 49 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 14:56:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:56:57,493 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2024-11-20 14:56:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 14:56:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2024-11-20 14:56:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:56:57,494 INFO L225 Difference]: With dead ends: 113 [2024-11-20 14:56:57,494 INFO L226 Difference]: Without dead ends: 113 [2024-11-20 14:56:57,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=356, Invalid=4759, Unknown=1, NotChecked=140, Total=5256 [2024-11-20 14:56:57,496 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 92 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 14:56:57,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1258 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1605 Invalid, 0 Unknown, 116 Unchecked, 0.8s Time] [2024-11-20 14:56:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-20 14:56:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-20 14:56:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 97 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:56:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2024-11-20 14:56:57,501 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 55 [2024-11-20 14:56:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:56:57,501 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2024-11-20 14:56:57,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 14:56:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2024-11-20 14:56:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 14:56:57,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:56:57,502 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:56:57,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 14:56:57,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 14:56:57,707 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:56:57,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:56:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash -660261594, now seen corresponding path program 1 times [2024-11-20 14:56:57,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:56:57,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676081541] [2024-11-20 14:56:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:57,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:56:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:58,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:56:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:59,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:56:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:59,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:56:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:56:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 14:56:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:56:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676081541] [2024-11-20 14:56:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676081541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:56:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539511498] [2024-11-20 14:56:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:56:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:56:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:56:59,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:56:59,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 14:57:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:57:00,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-20 14:57:00,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:57:00,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:57:00,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 14:57:00,521 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:57:00,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:57:00,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 14:57:00,658 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 11 treesize of output 7 [2024-11-20 14:57:00,664 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 11 treesize of output 7 [2024-11-20 14:57:00,736 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-20 14:57:00,737 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 59 treesize of output 52 [2024-11-20 14:57:00,745 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 24 treesize of output 11 [2024-11-20 14:57:01,018 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 43 treesize of output 19 [2024-11-20 14:57:01,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 14:57:01,030 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 11 treesize of output 3 [2024-11-20 14:57:01,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-20 14:57:01,236 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= |c_#memory_$Pointer$#1.offset| (store |c_old(#memory_$Pointer$#1.offset)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#1.offset| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#1.base| |node_create_~temp~0#1.base|))))) (exists ((|v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_7| Int)) (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_append_~head#1.base_BEFORE_CALL_7|) 0) 0))) is different from true [2024-11-20 14:57:01,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:57:01,274 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 51 treesize of output 34 [2024-11-20 14:57:01,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:57:01,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-20 14:57:01,294 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2024-11-20 14:57:01,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2024-11-20 14:57:01,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-20 14:57:01,397 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 48 treesize of output 28 [2024-11-20 14:57:01,516 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 25 treesize of output 13 [2024-11-20 14:57:01,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 14:57:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-20 14:57:01,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:57:01,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539511498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:57:01,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:57:01,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 51 [2024-11-20 14:57:01,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324406234] [2024-11-20 14:57:01,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:57:01,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-20 14:57:01,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:57:01,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-20 14:57:01,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3009, Unknown=1, NotChecked=110, Total=3306 [2024-11-20 14:57:01,902 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 52 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 45 states have internal predecessors, (95), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 14:57:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:57:03,636 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2024-11-20 14:57:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 14:57:03,637 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 45 states have internal predecessors, (95), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2024-11-20 14:57:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:57:03,638 INFO L225 Difference]: With dead ends: 108 [2024-11-20 14:57:03,639 INFO L226 Difference]: Without dead ends: 108 [2024-11-20 14:57:03,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=343, Invalid=5360, Unknown=1, NotChecked=148, Total=5852 [2024-11-20 14:57:03,642 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 75 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 14:57:03,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1169 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1658 Invalid, 0 Unknown, 115 Unchecked, 0.9s Time] [2024-11-20 14:57:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-20 14:57:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-20 14:57:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 99 states have internal predecessors, (108), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:57:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2024-11-20 14:57:03,645 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 55 [2024-11-20 14:57:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:57:03,646 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2024-11-20 14:57:03,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 45 states have internal predecessors, (95), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 14:57:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2024-11-20 14:57:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 14:57:03,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:57:03,647 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:57:03,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 14:57:03,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:57:03,850 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-20 14:57:03,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:57:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash -350480549, now seen corresponding path program 2 times [2024-11-20 14:57:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:57:03,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715557367] [2024-11-20 14:57:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:57:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:57:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:57:05,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 14:57:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:57:06,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 14:57:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:57:06,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 14:57:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:57:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 14:57:06,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:57:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715557367] [2024-11-20 14:57:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715557367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:57:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681917373] [2024-11-20 14:57:06,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:57:06,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:57:06,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:57:06,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:57:06,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 14:57:07,243 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:57:07,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:57:07,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-20 14:57:07,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:57:07,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 14:57:07,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-20 14:57:07,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-20 14:57:07,878 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 14:57:07,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-20 14:57:07,888 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 18 treesize of output 13 [2024-11-20 14:57:07,893 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 18 treesize of output 13 [2024-11-20 14:57:08,054 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 18 treesize of output 13 [2024-11-20 14:57:08,061 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 18 treesize of output 13 [2024-11-20 14:57:08,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-20 14:57:08,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-20 14:57:08,174 INFO L349 Elim1Store]: treesize reduction 61, result has 12.9 percent of original size [2024-11-20 14:57:08,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 89 [2024-11-20 14:57:08,186 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-20 14:57:08,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 79 [2024-11-20 14:57:08,522 INFO L349 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2024-11-20 14:57:08,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 77 [2024-11-20 14:57:08,530 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-20 14:57:08,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2024-11-20 14:57:08,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 14:57:08,569 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#memory_$Pointer$#1.offset| (store |c_old(#memory_$Pointer$#1.offset)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#1.offset| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#1.base| |node_create_~temp~0#1.base|))))) is different from true [2024-11-20 14:57:08,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:57:08,604 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-20 14:57:08,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 206 treesize of output 167 [2024-11-20 14:57:08,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:57:08,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:57:08,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 129 [2024-11-20 14:57:08,625 INFO L349 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2024-11-20 14:57:08,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2024-11-20 14:57:08,758 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 186 treesize of output 138 [2024-11-20 14:57:08,760 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 142 treesize of output 98