./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-optional-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-optional-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 8b0f1d623fff7bbdf74e6250d2f53fb98e44ca7ba1aae1265f5b0871b427fba0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 21:41:16,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 21:41:16,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 21:41:16,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 21:41:16,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 21:41:16,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 21:41:16,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 21:41:16,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 21:41:16,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 21:41:16,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 21:41:16,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 21:41:16,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 21:41:16,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 21:41:16,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 21:41:16,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 21:41:16,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 21:41:16,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 21:41:16,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 21:41:16,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 21:41:16,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 21:41:16,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 21:41:16,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 21:41:16,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 21:41:16,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 21:41:16,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 21:41:16,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 21:41:16,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 21:41:16,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 21:41:16,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 21:41:16,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 21:41:16,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 21:41:16,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 21:41:16,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 21:41:16,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 21:41:16,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 21:41:16,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 21:41:16,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 21:41:16,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 21:41:16,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 21:41:16,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 21:41:16,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 21:41:16,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 21:41:16,345 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 21:41:16,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 21:41:16,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 21:41:16,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 21:41:16,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 21:41:16,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 21:41:16,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 21:41:16,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 21:41:16,358 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 21:41:16,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 21:41:16,359 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 21:41:16,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 21:41:16,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 21:41:16,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 21:41:16,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 21:41:16,359 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 21:41:16,360 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 21:41:16,360 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 21:41:16,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 21:41:16,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 21:41:16,360 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 21:41:16,360 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 21:41:16,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 21:41:16,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 21:41:16,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 21:41:16,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:41:16,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 21:41:16,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 21:41:16,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 21:41:16,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 21:41:16,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 21:41:16,362 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 21:41:16,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 21:41:16,362 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 21:41:16,362 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0f1d623fff7bbdf74e6250d2f53fb98e44ca7ba1aae1265f5b0871b427fba0 [2023-02-18 21:41:16,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 21:41:16,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 21:41:16,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 21:41:16,567 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 21:41:16,568 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 21:41:16,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-optional-1.i [2023-02-18 21:41:17,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 21:41:17,764 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 21:41:17,765 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i [2023-02-18 21:41:17,772 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfeb4132/2acdec3ffddd446ba4366c0b706cb028/FLAGf43e7e4d0 [2023-02-18 21:41:17,798 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfeb4132/2acdec3ffddd446ba4366c0b706cb028 [2023-02-18 21:41:17,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 21:41:17,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 21:41:17,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 21:41:17,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 21:41:17,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 21:41:17,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:41:17" (1/1) ... [2023-02-18 21:41:17,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40076132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:17, skipping insertion in model container [2023-02-18 21:41:17,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:41:17" (1/1) ... [2023-02-18 21:41:17,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 21:41:17,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 21:41:18,073 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i[22688,22701] [2023-02-18 21:41:18,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:41:18,088 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 21:41:18,122 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i[22688,22701] [2023-02-18 21:41:18,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:41:18,146 INFO L208 MainTranslator]: Completed translation [2023-02-18 21:41:18,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18 WrapperNode [2023-02-18 21:41:18,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 21:41:18,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 21:41:18,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 21:41:18,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 21:41:18,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,196 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 136 [2023-02-18 21:41:18,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 21:41:18,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 21:41:18,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 21:41:18,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 21:41:18,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 21:41:18,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 21:41:18,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 21:41:18,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 21:41:18,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (1/1) ... [2023-02-18 21:41:18,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:41:18,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:41:18,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 21:41:18,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 21:41:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 21:41:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 21:41:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 21:41:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 21:41:18,330 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 21:41:18,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 21:41:18,628 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 21:41:18,632 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 21:41:18,632 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-18 21:41:18,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:41:18 BoogieIcfgContainer [2023-02-18 21:41:18,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 21:41:18,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 21:41:18,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 21:41:18,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 21:41:18,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 09:41:17" (1/3) ... [2023-02-18 21:41:18,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34945dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:41:18, skipping insertion in model container [2023-02-18 21:41:18,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:41:18" (2/3) ... [2023-02-18 21:41:18,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34945dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:41:18, skipping insertion in model container [2023-02-18 21:41:18,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:41:18" (3/3) ... [2023-02-18 21:41:18,641 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-optional-1.i [2023-02-18 21:41:18,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 21:41:18,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2023-02-18 21:41:18,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 21:41:18,697 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7ef37b9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 21:41:18,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2023-02-18 21:41:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 142 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 21:41:18,703 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:18,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 21:41:18,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-18 21:41:18,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:18,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346886587] [2023-02-18 21:41:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:18,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:18,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:18,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346886587] [2023-02-18 21:41:18,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346886587] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:18,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:18,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:41:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694357676] [2023-02-18 21:41:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:41:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:41:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:41:18,902 INFO L87 Difference]: Start difference. First operand has 143 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 142 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:19,080 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2023-02-18 21:41:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:41:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-18 21:41:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:19,089 INFO L225 Difference]: With dead ends: 145 [2023-02-18 21:41:19,089 INFO L226 Difference]: Without dead ends: 141 [2023-02-18 21:41:19,091 INFO L412 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 [2023-02-18 21:41:19,094 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 128 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:19,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 84 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-18 21:41:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2023-02-18 21:41:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 78 states have (on average 1.8846153846153846) internal successors, (147), 134 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2023-02-18 21:41:19,135 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 3 [2023-02-18 21:41:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:19,135 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2023-02-18 21:41:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2023-02-18 21:41:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 21:41:19,136 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:19,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 21:41:19,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 21:41:19,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-18 21:41:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:19,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811487558] [2023-02-18 21:41:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:19,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811487558] [2023-02-18 21:41:19,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811487558] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:19,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:19,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:41:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100263644] [2023-02-18 21:41:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:19,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:41:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:41:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:41:19,205 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:19,274 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2023-02-18 21:41:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:41:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-18 21:41:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:19,276 INFO L225 Difference]: With dead ends: 131 [2023-02-18 21:41:19,276 INFO L226 Difference]: Without dead ends: 131 [2023-02-18 21:41:19,276 INFO L412 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 [2023-02-18 21:41:19,277 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 105 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:19,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 97 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-18 21:41:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2023-02-18 21:41:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2023-02-18 21:41:19,287 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 3 [2023-02-18 21:41:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:19,287 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2023-02-18 21:41:19,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2023-02-18 21:41:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:41:19,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:19,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:19,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 21:41:19,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 171916845, now seen corresponding path program 1 times [2023-02-18 21:41:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830187898] [2023-02-18 21:41:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:19,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830187898] [2023-02-18 21:41:19,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830187898] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:19,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:19,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112005902] [2023-02-18 21:41:19,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:19,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:41:19,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:41:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:19,500 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:19,654 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2023-02-18 21:41:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:41:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 21:41:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:19,657 INFO L225 Difference]: With dead ends: 171 [2023-02-18 21:41:19,658 INFO L226 Difference]: Without dead ends: 171 [2023-02-18 21:41:19,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:19,663 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 52 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:19,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 313 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-02-18 21:41:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 126. [2023-02-18 21:41:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 78 states have (on average 1.7692307692307692) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2023-02-18 21:41:19,678 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 11 [2023-02-18 21:41:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:19,679 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2023-02-18 21:41:19,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2023-02-18 21:41:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:41:19,680 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:19,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:19,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 21:41:19,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash 171916846, now seen corresponding path program 1 times [2023-02-18 21:41:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:19,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556421551] [2023-02-18 21:41:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556421551] [2023-02-18 21:41:19,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556421551] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:19,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:19,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:19,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712358340] [2023-02-18 21:41:19,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:19,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:41:19,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:41:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:19,814 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:19,922 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2023-02-18 21:41:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:41:19,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 21:41:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:19,923 INFO L225 Difference]: With dead ends: 125 [2023-02-18 21:41:19,923 INFO L226 Difference]: Without dead ends: 125 [2023-02-18 21:41:19,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:19,924 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 3 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:19,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 349 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-18 21:41:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-02-18 21:41:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 78 states have (on average 1.7564102564102564) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2023-02-18 21:41:19,928 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 11 [2023-02-18 21:41:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:19,928 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2023-02-18 21:41:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2023-02-18 21:41:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 21:41:19,929 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:19,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 21:41:19,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash -468215045, now seen corresponding path program 1 times [2023-02-18 21:41:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:19,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698377370] [2023-02-18 21:41:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:19,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698377370] [2023-02-18 21:41:19,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698377370] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:19,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:19,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:41:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370390348] [2023-02-18 21:41:19,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:19,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:41:19,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:41:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:41:19,995 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:20,102 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2023-02-18 21:41:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:41:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 21:41:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:20,104 INFO L225 Difference]: With dead ends: 127 [2023-02-18 21:41:20,104 INFO L226 Difference]: Without dead ends: 127 [2023-02-18 21:41:20,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:20,105 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 174 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:20,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 73 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-18 21:41:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2023-02-18 21:41:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 117 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2023-02-18 21:41:20,108 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 12 [2023-02-18 21:41:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:20,108 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2023-02-18 21:41:20,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2023-02-18 21:41:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 21:41:20,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:20,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 21:41:20,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -468215044, now seen corresponding path program 1 times [2023-02-18 21:41:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:20,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337750776] [2023-02-18 21:41:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:20,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337750776] [2023-02-18 21:41:20,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337750776] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:20,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:20,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:41:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819891417] [2023-02-18 21:41:20,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:20,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:41:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:41:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:41:20,187 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:20,373 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2023-02-18 21:41:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:41:20,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 21:41:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:20,374 INFO L225 Difference]: With dead ends: 171 [2023-02-18 21:41:20,374 INFO L226 Difference]: Without dead ends: 171 [2023-02-18 21:41:20,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:20,375 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 178 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:20,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 151 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-02-18 21:41:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 146. [2023-02-18 21:41:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 145 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2023-02-18 21:41:20,378 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 12 [2023-02-18 21:41:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:20,378 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2023-02-18 21:41:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2023-02-18 21:41:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 21:41:20,379 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:20,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 21:41:20,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2003220227, now seen corresponding path program 1 times [2023-02-18 21:41:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136624845] [2023-02-18 21:41:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:20,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:20,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136624845] [2023-02-18 21:41:20,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136624845] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:20,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:20,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:41:20,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489923636] [2023-02-18 21:41:20,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:20,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:41:20,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:20,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:41:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:41:20,441 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:20,563 INFO L93 Difference]: Finished difference Result 146 states and 171 transitions. [2023-02-18 21:41:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 21:41:20,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 21:41:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:20,564 INFO L225 Difference]: With dead ends: 146 [2023-02-18 21:41:20,564 INFO L226 Difference]: Without dead ends: 146 [2023-02-18 21:41:20,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:41:20,565 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 63 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:20,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 273 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-02-18 21:41:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2023-02-18 21:41:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.5178571428571428) internal successors, (170), 144 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2023-02-18 21:41:20,567 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 16 [2023-02-18 21:41:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:20,568 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2023-02-18 21:41:20,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2023-02-18 21:41:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 21:41:20,569 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:20,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:20,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 21:41:20,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2003220226, now seen corresponding path program 1 times [2023-02-18 21:41:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88708113] [2023-02-18 21:41:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:20,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:20,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:20,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88708113] [2023-02-18 21:41:20,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88708113] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:20,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:20,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:41:20,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585169707] [2023-02-18 21:41:20,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:20,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:41:20,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:41:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:41:20,670 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:20,806 INFO L93 Difference]: Finished difference Result 137 states and 162 transitions. [2023-02-18 21:41:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:41:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 21:41:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:20,807 INFO L225 Difference]: With dead ends: 137 [2023-02-18 21:41:20,808 INFO L226 Difference]: Without dead ends: 137 [2023-02-18 21:41:20,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:41:20,808 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 25 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:20,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 323 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:20,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-18 21:41:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2023-02-18 21:41:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 107 states have (on average 1.439252336448598) internal successors, (154), 129 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2023-02-18 21:41:20,811 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 16 [2023-02-18 21:41:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:20,811 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2023-02-18 21:41:20,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2023-02-18 21:41:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:41:20,812 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:20,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:20,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 21:41:20,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2123452236, now seen corresponding path program 1 times [2023-02-18 21:41:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:20,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727080379] [2023-02-18 21:41:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:20,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727080379] [2023-02-18 21:41:20,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727080379] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:20,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:20,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971910049] [2023-02-18 21:41:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:41:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:41:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:41:20,837 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:20,897 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2023-02-18 21:41:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:41:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 21:41:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:20,898 INFO L225 Difference]: With dead ends: 154 [2023-02-18 21:41:20,898 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 21:41:20,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:41:20,899 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 121 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:20,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 151 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 21:41:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2023-02-18 21:41:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 107 states have (on average 1.4205607476635513) internal successors, (152), 129 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2023-02-18 21:41:20,902 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 17 [2023-02-18 21:41:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:20,902 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2023-02-18 21:41:20,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2023-02-18 21:41:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 21:41:20,903 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:20,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:20,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 21:41:20,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1866791259, now seen corresponding path program 1 times [2023-02-18 21:41:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102026045] [2023-02-18 21:41:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:20,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:20,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102026045] [2023-02-18 21:41:20,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102026045] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:20,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:20,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261877861] [2023-02-18 21:41:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:20,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:41:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:41:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:41:20,932 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:20,944 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2023-02-18 21:41:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:41:20,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-18 21:41:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:20,945 INFO L225 Difference]: With dead ends: 156 [2023-02-18 21:41:20,945 INFO L226 Difference]: Without dead ends: 156 [2023-02-18 21:41:20,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:20,946 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 21 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:20,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 304 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:41:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-18 21:41:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2023-02-18 21:41:20,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 111 states have (on average 1.4054054054054055) internal successors, (156), 133 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2023-02-18 21:41:20,948 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 20 [2023-02-18 21:41:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:20,949 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2023-02-18 21:41:20,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2023-02-18 21:41:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 21:41:20,949 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:20,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:20,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 21:41:20,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash 72886850, now seen corresponding path program 1 times [2023-02-18 21:41:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:20,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673661873] [2023-02-18 21:41:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:21,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673661873] [2023-02-18 21:41:21,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673661873] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:21,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:21,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:41:21,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661602503] [2023-02-18 21:41:21,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:21,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:41:21,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:21,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:41:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-18 21:41:21,027 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:21,273 INFO L93 Difference]: Finished difference Result 247 states and 287 transitions. [2023-02-18 21:41:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:41:21,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 21:41:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:21,274 INFO L225 Difference]: With dead ends: 247 [2023-02-18 21:41:21,274 INFO L226 Difference]: Without dead ends: 247 [2023-02-18 21:41:21,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-02-18 21:41:21,275 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 266 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:21,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 373 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-02-18 21:41:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 148. [2023-02-18 21:41:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 125 states have (on average 1.392) internal successors, (174), 147 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2023-02-18 21:41:21,278 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 22 [2023-02-18 21:41:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:21,278 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2023-02-18 21:41:21,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2023-02-18 21:41:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 21:41:21,279 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:21,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:21,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 21:41:21,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash 72886851, now seen corresponding path program 1 times [2023-02-18 21:41:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:21,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187080291] [2023-02-18 21:41:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:21,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187080291] [2023-02-18 21:41:21,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187080291] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:21,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:21,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:41:21,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421506246] [2023-02-18 21:41:21,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:21,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:41:21,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:41:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:21,378 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:21,565 INFO L93 Difference]: Finished difference Result 261 states and 307 transitions. [2023-02-18 21:41:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 21:41:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 21:41:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:21,567 INFO L225 Difference]: With dead ends: 261 [2023-02-18 21:41:21,567 INFO L226 Difference]: Without dead ends: 261 [2023-02-18 21:41:21,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-02-18 21:41:21,568 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 164 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:21,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 459 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-02-18 21:41:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 144. [2023-02-18 21:41:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 121 states have (on average 1.3884297520661157) internal successors, (168), 143 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2023-02-18 21:41:21,571 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 22 [2023-02-18 21:41:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:21,571 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2023-02-18 21:41:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2023-02-18 21:41:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 21:41:21,572 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:21,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:21,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 21:41:21,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1318553294, now seen corresponding path program 1 times [2023-02-18 21:41:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:21,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149260039] [2023-02-18 21:41:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:21,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149260039] [2023-02-18 21:41:21,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149260039] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:21,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:21,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:41:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083499951] [2023-02-18 21:41:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:41:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:41:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:41:21,588 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:21,594 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2023-02-18 21:41:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:41:21,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 21:41:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:21,595 INFO L225 Difference]: With dead ends: 146 [2023-02-18 21:41:21,595 INFO L226 Difference]: Without dead ends: 146 [2023-02-18 21:41:21,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:41:21,595 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:21,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:41:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-02-18 21:41:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-02-18 21:41:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 145 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2023-02-18 21:41:21,598 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 22 [2023-02-18 21:41:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:21,598 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2023-02-18 21:41:21,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2023-02-18 21:41:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 21:41:21,599 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:21,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:21,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 21:41:21,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash 116002131, now seen corresponding path program 1 times [2023-02-18 21:41:21,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:21,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248316371] [2023-02-18 21:41:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:21,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:21,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:21,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248316371] [2023-02-18 21:41:21,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248316371] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:21,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:21,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:41:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754858731] [2023-02-18 21:41:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:41:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:41:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:21,701 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:21,877 INFO L93 Difference]: Finished difference Result 219 states and 250 transitions. [2023-02-18 21:41:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:41:21,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-18 21:41:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:21,878 INFO L225 Difference]: With dead ends: 219 [2023-02-18 21:41:21,878 INFO L226 Difference]: Without dead ends: 219 [2023-02-18 21:41:21,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-02-18 21:41:21,879 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 229 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:21,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 353 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-18 21:41:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 152. [2023-02-18 21:41:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 129 states have (on average 1.372093023255814) internal successors, (177), 151 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 177 transitions. [2023-02-18 21:41:21,881 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 177 transitions. Word has length 24 [2023-02-18 21:41:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:21,881 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 177 transitions. [2023-02-18 21:41:21,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 177 transitions. [2023-02-18 21:41:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 21:41:21,882 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:21,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 21:41:21,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash 913286409, now seen corresponding path program 1 times [2023-02-18 21:41:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960812912] [2023-02-18 21:41:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:21,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960812912] [2023-02-18 21:41:21,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960812912] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:21,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:21,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:21,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272291305] [2023-02-18 21:41:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:41:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:21,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:41:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:21,959 INFO L87 Difference]: Start difference. First operand 152 states and 177 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:22,054 INFO L93 Difference]: Finished difference Result 158 states and 184 transitions. [2023-02-18 21:41:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:41:22,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-18 21:41:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:22,055 INFO L225 Difference]: With dead ends: 158 [2023-02-18 21:41:22,055 INFO L226 Difference]: Without dead ends: 158 [2023-02-18 21:41:22,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:22,055 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 9 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:22,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 286 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-02-18 21:41:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2023-02-18 21:41:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.3643410852713178) internal successors, (176), 150 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2023-02-18 21:41:22,058 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 24 [2023-02-18 21:41:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:22,058 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2023-02-18 21:41:22,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2023-02-18 21:41:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 21:41:22,059 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:22,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:22,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 21:41:22,059 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 913286410, now seen corresponding path program 1 times [2023-02-18 21:41:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:22,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318113581] [2023-02-18 21:41:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:22,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:22,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318113581] [2023-02-18 21:41:22,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318113581] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:22,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:22,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:22,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063089912] [2023-02-18 21:41:22,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:22,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:41:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:41:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:22,169 INFO L87 Difference]: Start difference. First operand 151 states and 176 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:22,258 INFO L93 Difference]: Finished difference Result 150 states and 175 transitions. [2023-02-18 21:41:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:41:22,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-18 21:41:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:22,260 INFO L225 Difference]: With dead ends: 150 [2023-02-18 21:41:22,260 INFO L226 Difference]: Without dead ends: 150 [2023-02-18 21:41:22,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:41:22,261 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 3 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:22,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 275 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-02-18 21:41:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-02-18 21:41:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 149 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2023-02-18 21:41:22,263 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 24 [2023-02-18 21:41:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:22,264 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2023-02-18 21:41:22,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2023-02-18 21:41:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 21:41:22,264 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:22,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:22,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 21:41:22,265 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1848177146, now seen corresponding path program 1 times [2023-02-18 21:41:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:22,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769780747] [2023-02-18 21:41:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:22,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:22,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769780747] [2023-02-18 21:41:22,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769780747] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:22,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:22,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 21:41:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434452277] [2023-02-18 21:41:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 21:41:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 21:41:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-18 21:41:22,391 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:22,697 INFO L93 Difference]: Finished difference Result 309 states and 356 transitions. [2023-02-18 21:41:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 21:41:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-18 21:41:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:22,699 INFO L225 Difference]: With dead ends: 309 [2023-02-18 21:41:22,699 INFO L226 Difference]: Without dead ends: 309 [2023-02-18 21:41:22,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-02-18 21:41:22,700 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 343 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:22,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 466 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-02-18 21:41:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 163. [2023-02-18 21:41:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.352112676056338) internal successors, (192), 162 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2023-02-18 21:41:22,703 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 26 [2023-02-18 21:41:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:22,703 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2023-02-18 21:41:22,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2023-02-18 21:41:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 21:41:22,703 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:22,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:22,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 21:41:22,704 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1848177147, now seen corresponding path program 1 times [2023-02-18 21:41:22,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:22,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010833399] [2023-02-18 21:41:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:22,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:22,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:22,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010833399] [2023-02-18 21:41:22,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010833399] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:22,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:22,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 21:41:22,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279866681] [2023-02-18 21:41:22,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:22,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 21:41:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 21:41:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:41:22,914 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:23,314 INFO L93 Difference]: Finished difference Result 252 states and 290 transitions. [2023-02-18 21:41:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 21:41:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-18 21:41:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:23,315 INFO L225 Difference]: With dead ends: 252 [2023-02-18 21:41:23,315 INFO L226 Difference]: Without dead ends: 252 [2023-02-18 21:41:23,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-02-18 21:41:23,316 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 302 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:23,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 604 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 21:41:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-02-18 21:41:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 163. [2023-02-18 21:41:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.3450704225352113) internal successors, (191), 162 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 191 transitions. [2023-02-18 21:41:23,318 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 191 transitions. Word has length 26 [2023-02-18 21:41:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 191 transitions. [2023-02-18 21:41:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 191 transitions. [2023-02-18 21:41:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 21:41:23,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:23,319 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 21:41:23,319 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1639700775, now seen corresponding path program 1 times [2023-02-18 21:41:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:23,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59207382] [2023-02-18 21:41:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:23,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:23,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:23,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59207382] [2023-02-18 21:41:23,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59207382] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:23,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:23,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:41:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363842711] [2023-02-18 21:41:23,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:23,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:41:23,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:41:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:41:23,340 INFO L87 Difference]: Start difference. First operand 163 states and 191 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:23,350 INFO L93 Difference]: Finished difference Result 175 states and 204 transitions. [2023-02-18 21:41:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 21:41:23,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-18 21:41:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:23,351 INFO L225 Difference]: With dead ends: 175 [2023-02-18 21:41:23,351 INFO L226 Difference]: Without dead ends: 175 [2023-02-18 21:41:23,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:41:23,351 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 10 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:23,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 299 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:41:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-18 21:41:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2023-02-18 21:41:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 166 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 194 transitions. [2023-02-18 21:41:23,354 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 194 transitions. Word has length 26 [2023-02-18 21:41:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:23,354 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 194 transitions. [2023-02-18 21:41:23,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 194 transitions. [2023-02-18 21:41:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 21:41:23,355 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:23,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:23,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-18 21:41:23,355 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1067960075, now seen corresponding path program 1 times [2023-02-18 21:41:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:23,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129500917] [2023-02-18 21:41:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129500917] [2023-02-18 21:41:23,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129500917] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:23,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:23,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 21:41:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615558519] [2023-02-18 21:41:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 21:41:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 21:41:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:41:23,473 INFO L87 Difference]: Start difference. First operand 167 states and 194 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:23,777 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2023-02-18 21:41:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 21:41:23,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 21:41:23,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:23,779 INFO L225 Difference]: With dead ends: 247 [2023-02-18 21:41:23,779 INFO L226 Difference]: Without dead ends: 247 [2023-02-18 21:41:23,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-02-18 21:41:23,779 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 277 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:23,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 589 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-02-18 21:41:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 167. [2023-02-18 21:41:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.321917808219178) internal successors, (193), 166 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2023-02-18 21:41:23,783 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 28 [2023-02-18 21:41:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:23,783 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2023-02-18 21:41:23,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2023-02-18 21:41:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 21:41:23,784 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:23,784 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-18 21:41:23,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1161159390, now seen corresponding path program 1 times [2023-02-18 21:41:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:23,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33681150] [2023-02-18 21:41:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:23,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:23,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33681150] [2023-02-18 21:41:23,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33681150] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:41:23,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678080304] [2023-02-18 21:41:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:23,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:41:23,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:41:23,876 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) [2023-02-18 21:41:23,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 21:41:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:23,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 21:41:23,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:41:23,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:41:23,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:41:23,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:41:23,998 INFO L350 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 21 treesize of output 20 [2023-02-18 21:41:24,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:41:24,001 INFO L350 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 21 treesize of output 20 [2023-02-18 21:41:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:41:24,007 INFO L350 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 21 treesize of output 20 [2023-02-18 21:41:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:41:24,010 INFO L350 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 21 treesize of output 20 [2023-02-18 21:41:24,033 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:41:24,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:41:24,036 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:41:24,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:24,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2023-02-18 21:41:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:24,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:41:24,189 INFO L350 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 10 treesize of output 8 [2023-02-18 21:41:24,192 INFO L350 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 14 treesize of output 12 [2023-02-18 21:41:24,196 INFO L350 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 10 treesize of output 8 [2023-02-18 21:41:24,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:41:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:24,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678080304] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:41:24,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 21:41:24,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-02-18 21:41:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485866779] [2023-02-18 21:41:24,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 21:41:24,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 21:41:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 21:41:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:41:24,207 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:24,458 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2023-02-18 21:41:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:41:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 21:41:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:24,459 INFO L225 Difference]: With dead ends: 208 [2023-02-18 21:41:24,459 INFO L226 Difference]: Without dead ends: 208 [2023-02-18 21:41:24,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-02-18 21:41:24,460 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 449 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:24,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 404 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:41:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-02-18 21:41:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2023-02-18 21:41:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 159 states have (on average 1.3081761006289307) internal successors, (208), 179 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 208 transitions. [2023-02-18 21:41:24,462 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 208 transitions. Word has length 28 [2023-02-18 21:41:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:24,462 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 208 transitions. [2023-02-18 21:41:24,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 208 transitions. [2023-02-18 21:41:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 21:41:24,463 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:24,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:24,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 21:41:24,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-18 21:41:24,668 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1511540264, now seen corresponding path program 1 times [2023-02-18 21:41:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:24,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911131366] [2023-02-18 21:41:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:24,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:24,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911131366] [2023-02-18 21:41:24,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911131366] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:24,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:24,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 21:41:24,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396237897] [2023-02-18 21:41:24,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:24,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:41:24,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:41:24,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-18 21:41:24,741 INFO L87 Difference]: Start difference. First operand 180 states and 208 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:24,905 INFO L93 Difference]: Finished difference Result 225 states and 256 transitions. [2023-02-18 21:41:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:41:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-18 21:41:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:24,908 INFO L225 Difference]: With dead ends: 225 [2023-02-18 21:41:24,908 INFO L226 Difference]: Without dead ends: 225 [2023-02-18 21:41:24,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-02-18 21:41:24,908 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 67 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:24,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 438 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:41:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-02-18 21:41:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 186. [2023-02-18 21:41:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 165 states have (on average 1.303030303030303) internal successors, (215), 185 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 215 transitions. [2023-02-18 21:41:24,910 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 215 transitions. Word has length 30 [2023-02-18 21:41:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:24,911 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 215 transitions. [2023-02-18 21:41:24,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 215 transitions. [2023-02-18 21:41:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 21:41:24,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:24,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-18 21:41:24,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 238082658, now seen corresponding path program 1 times [2023-02-18 21:41:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:24,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682710894] [2023-02-18 21:41:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:24,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:25,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:25,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682710894] [2023-02-18 21:41:25,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682710894] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:41:25,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:41:25,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-18 21:41:25,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930920622] [2023-02-18 21:41:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:41:25,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 21:41:25,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:41:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 21:41:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:41:25,106 INFO L87 Difference]: Start difference. First operand 186 states and 215 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:41:25,478 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2023-02-18 21:41:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 21:41:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 21:41:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:41:25,479 INFO L225 Difference]: With dead ends: 224 [2023-02-18 21:41:25,479 INFO L226 Difference]: Without dead ends: 224 [2023-02-18 21:41:25,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-02-18 21:41:25,479 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 201 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 21:41:25,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 672 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 21:41:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-18 21:41:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 183. [2023-02-18 21:41:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 162 states have (on average 1.2962962962962963) internal successors, (210), 182 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2023-02-18 21:41:25,482 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 33 [2023-02-18 21:41:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:41:25,482 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2023-02-18 21:41:25,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:41:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2023-02-18 21:41:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 21:41:25,482 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:41:25,482 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:41:25,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-18 21:41:25,483 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2023-02-18 21:41:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:41:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash 745727206, now seen corresponding path program 1 times [2023-02-18 21:41:25,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:41:25,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802493182] [2023-02-18 21:41:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:25,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:41:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:41:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:41:25,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802493182] [2023-02-18 21:41:25,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802493182] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:41:25,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25231540] [2023-02-18 21:41:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:41:25,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:41:25,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:41:25,706 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) [2023-02-18 21:41:25,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 21:41:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:41:25,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 21:41:25,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:41:25,806 INFO L350 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 [2023-02-18 21:41:25,811 INFO L350 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 [2023-02-18 21:41:25,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:25,828 INFO L350 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 39 [2023-02-18 21:41:25,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:25,846 INFO L350 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 1 case distinctions, treesize of input 21 treesize of output 42 [2023-02-18 21:41:25,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:25,985 INFO L350 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 352 treesize of output 302 [2023-02-18 21:41:26,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:26,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 224 treesize of output 338 [2023-02-18 21:41:26,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2023-02-18 21:41:26,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:26,825 INFO L350 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 352 treesize of output 302 [2023-02-18 21:41:26,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:26,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 224 treesize of output 338 [2023-02-18 21:41:27,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2023-02-18 21:41:27,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:27,172 INFO L350 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 352 treesize of output 302 [2023-02-18 21:41:27,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2023-02-18 21:41:27,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:27,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 224 treesize of output 338 [2023-02-18 21:41:28,169 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:41:28,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 556 treesize of output 669