./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/tree-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a31fd051 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/heap-manipulation/tree-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:12:51,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:12:51,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:12:51,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:12:51,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:12:51,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:12:51,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:12:51,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:12:51,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:12:51,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:12:51,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:12:51,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:12:51,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:12:51,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:12:51,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:12:51,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:12:51,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:12:51,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:12:51,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:12:51,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:12:51,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:12:51,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:12:51,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:12:51,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:12:51,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:12:51,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:12:51,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:12:51,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:12:51,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:12:51,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:12:51,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:12:51,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:12:51,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:12:51,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:12:51,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:12:51,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:12:51,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:12:51,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:12:51,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:12:51,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:12:51,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:12:51,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 13:12:51,140 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:12:51,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:12:51,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:12:51,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:12:51,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:12:51,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:12:51,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:12:51,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:12:51,143 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:12:51,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:12:51,144 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:12:51,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:12:51,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:12:51,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:12:51,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:12:51,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:12:51,145 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:12:51,146 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:12:51,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:12:51,146 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:12:51,146 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:12:51,146 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:12:51,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:12:51,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:12:51,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:12:51,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:12:51,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:12:51,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:12:51,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:12:51,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:12:51,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:12:51,148 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:12:51,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:12:51,149 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:12:51,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a [2023-02-15 13:12:51,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:12:51,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:12:51,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:12:51,401 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:12:51,401 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:12:51,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-2.i [2023-02-15 13:12:52,593 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:12:52,901 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:12:52,903 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-2.i [2023-02-15 13:12:52,914 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51abd841e/b627a351bfe44358ba640687101e51b9/FLAGb2892599e [2023-02-15 13:12:52,930 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51abd841e/b627a351bfe44358ba640687101e51b9 [2023-02-15 13:12:52,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:12:52,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:12:52,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:12:52,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:12:52,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:12:52,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:52" (1/1) ... [2023-02-15 13:12:52,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e1acb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:52, skipping insertion in model container [2023-02-15 13:12:52,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:52" (1/1) ... [2023-02-15 13:12:52,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:12:52,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:12:53,230 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/heap-manipulation/tree-2.i[22626,22639] [2023-02-15 13:12:53,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:12:53,270 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:12:53,298 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/heap-manipulation/tree-2.i[22626,22639] [2023-02-15 13:12:53,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:12:53,347 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:12:53,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53 WrapperNode [2023-02-15 13:12:53,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:12:53,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:12:53,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:12:53,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:12:53,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,397 INFO L138 Inliner]: procedures = 122, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2023-02-15 13:12:53,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:12:53,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:12:53,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:12:53,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:12:53,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:12:53,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:12:53,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:12:53,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:12:53,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (1/1) ... [2023-02-15 13:12:53,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:12:53,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:12:53,476 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) [2023-02-15 13:12:53,492 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 [2023-02-15 13:12:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 13:12:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-15 13:12:53,521 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-15 13:12:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 13:12:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 13:12:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 13:12:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 13:12:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 13:12:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 13:12:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 13:12:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:12:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:12:53,683 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:12:53,686 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:12:54,108 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:12:54,114 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:12:54,116 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2023-02-15 13:12:54,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:54 BoogieIcfgContainer [2023-02-15 13:12:54,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:12:54,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:12:54,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:12:54,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:12:54,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:12:52" (1/3) ... [2023-02-15 13:12:54,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69565b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:54, skipping insertion in model container [2023-02-15 13:12:54,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:53" (2/3) ... [2023-02-15 13:12:54,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69565b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:54, skipping insertion in model container [2023-02-15 13:12:54,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:54" (3/3) ... [2023-02-15 13:12:54,127 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-2.i [2023-02-15 13:12:54,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:12:54,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 63 error locations. [2023-02-15 13:12:54,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:12:54,193 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;@1deddcf0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:12:54,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-02-15 13:12:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 77 states have (on average 2.168831168831169) internal successors, (167), 143 states have internal predecessors, (167), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 13:12:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-15 13:12:54,200 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:54,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:12:54,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash 31591658, now seen corresponding path program 1 times [2023-02-15 13:12:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:54,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320438717] [2023-02-15 13:12:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:54,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:54,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320438717] [2023-02-15 13:12:54,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320438717] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:54,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:54,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:12:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924301139] [2023-02-15 13:12:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:54,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 13:12:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 13:12:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 13:12:54,369 INFO L87 Difference]: Start difference. First operand has 145 states, 77 states have (on average 2.168831168831169) internal successors, (167), 143 states have internal predecessors, (167), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:54,392 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2023-02-15 13:12:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 13:12:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-15 13:12:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:54,401 INFO L225 Difference]: With dead ends: 143 [2023-02-15 13:12:54,401 INFO L226 Difference]: Without dead ends: 141 [2023-02-15 13:12:54,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 13:12:54,405 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:54,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:12:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-15 13:12:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-02-15 13:12:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 75 states have (on average 1.9866666666666666) internal successors, (149), 139 states have internal predecessors, (149), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2023-02-15 13:12:54,451 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 5 [2023-02-15 13:12:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:54,452 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2023-02-15 13:12:54,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2023-02-15 13:12:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:12:54,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:54,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:12:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:12:54,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash 978320808, now seen corresponding path program 1 times [2023-02-15 13:12:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:54,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192296891] [2023-02-15 13:12:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:54,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:54,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192296891] [2023-02-15 13:12:54,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192296891] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:54,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:54,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:12:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262645454] [2023-02-15 13:12:54,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:12:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:12:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:12:54,549 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:54,635 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2023-02-15 13:12:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:12:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 13:12:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:54,641 INFO L225 Difference]: With dead ends: 144 [2023-02-15 13:12:54,641 INFO L226 Difference]: Without dead ends: 144 [2023-02-15 13:12:54,645 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 [2023-02-15 13:12:54,648 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 88 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:54,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 179 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:12:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-15 13:12:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-02-15 13:12:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 78 states have (on average 1.9615384615384615) internal successors, (153), 142 states have internal predecessors, (153), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2023-02-15 13:12:54,670 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 6 [2023-02-15 13:12:54,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:54,670 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2023-02-15 13:12:54,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,671 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2023-02-15 13:12:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:12:54,672 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:54,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:12:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 13:12:54,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash 978321707, now seen corresponding path program 1 times [2023-02-15 13:12:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:54,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272471813] [2023-02-15 13:12:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:54,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272471813] [2023-02-15 13:12:54,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272471813] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:54,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:54,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:12:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889954503] [2023-02-15 13:12:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:12:54,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:54,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:12:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:12:54,743 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:54,921 INFO L93 Difference]: Finished difference Result 219 states and 241 transitions. [2023-02-15 13:12:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:12:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 13:12:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:54,923 INFO L225 Difference]: With dead ends: 219 [2023-02-15 13:12:54,923 INFO L226 Difference]: Without dead ends: 219 [2023-02-15 13:12:54,925 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 [2023-02-15 13:12:54,931 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 129 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:54,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 234 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:12:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-15 13:12:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 138. [2023-02-15 13:12:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 80 states have (on average 1.8625) internal successors, (149), 136 states have internal predecessors, (149), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2023-02-15 13:12:54,955 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 6 [2023-02-15 13:12:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:54,955 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2023-02-15 13:12:54,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2023-02-15 13:12:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:12:54,956 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:54,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:12:54,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 13:12:54,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash 978321708, now seen corresponding path program 1 times [2023-02-15 13:12:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:54,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643154010] [2023-02-15 13:12:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:55,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:55,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643154010] [2023-02-15 13:12:55,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643154010] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:55,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:55,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:12:55,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995385422] [2023-02-15 13:12:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:55,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:12:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:55,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:12:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:12:55,102 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:55,240 INFO L93 Difference]: Finished difference Result 240 states and 262 transitions. [2023-02-15 13:12:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:12:55,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 13:12:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:55,241 INFO L225 Difference]: With dead ends: 240 [2023-02-15 13:12:55,242 INFO L226 Difference]: Without dead ends: 240 [2023-02-15 13:12:55,242 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 [2023-02-15 13:12:55,248 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 124 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 264 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:12:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-15 13:12:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 150. [2023-02-15 13:12:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 95 states have (on average 1.768421052631579) internal successors, (168), 148 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2023-02-15 13:12:55,271 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 6 [2023-02-15 13:12:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:55,272 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2023-02-15 13:12:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2023-02-15 13:12:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 13:12:55,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:55,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:12:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 13:12:55,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:55,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:55,274 INFO L85 PathProgramCache]: Analyzing trace with hash -493316198, now seen corresponding path program 1 times [2023-02-15 13:12:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:55,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463031448] [2023-02-15 13:12:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:55,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:55,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:55,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463031448] [2023-02-15 13:12:55,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463031448] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:55,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:55,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:12:55,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502368036] [2023-02-15 13:12:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:55,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:12:55,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:12:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:12:55,314 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:55,409 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2023-02-15 13:12:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:12:55,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 13:12:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:55,412 INFO L225 Difference]: With dead ends: 229 [2023-02-15 13:12:55,412 INFO L226 Difference]: Without dead ends: 228 [2023-02-15 13:12:55,412 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 [2023-02-15 13:12:55,413 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 79 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:55,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 193 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:12:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-15 13:12:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 153. [2023-02-15 13:12:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.7448979591836735) internal successors, (171), 151 states have internal predecessors, (171), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2023-02-15 13:12:55,426 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 9 [2023-02-15 13:12:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:55,426 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2023-02-15 13:12:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2023-02-15 13:12:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 13:12:55,432 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:55,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:12:55,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 13:12:55,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -466102223, now seen corresponding path program 1 times [2023-02-15 13:12:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:55,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411586751] [2023-02-15 13:12:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:55,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:55,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411586751] [2023-02-15 13:12:55,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411586751] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:55,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:55,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:12:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984545924] [2023-02-15 13:12:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:12:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:12:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:12:55,511 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:55,529 INFO L93 Difference]: Finished difference Result 238 states and 267 transitions. [2023-02-15 13:12:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:12:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 13:12:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:55,531 INFO L225 Difference]: With dead ends: 238 [2023-02-15 13:12:55,531 INFO L226 Difference]: Without dead ends: 238 [2023-02-15 13:12:55,531 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 [2023-02-15 13:12:55,532 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 91 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 271 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:12:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-02-15 13:12:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 157. [2023-02-15 13:12:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 155 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2023-02-15 13:12:55,539 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 9 [2023-02-15 13:12:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:55,539 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2023-02-15 13:12:55,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2023-02-15 13:12:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:12:55,540 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:55,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:12:55,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 13:12:55,542 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1630553122, now seen corresponding path program 1 times [2023-02-15 13:12:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:55,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426850451] [2023-02-15 13:12:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426850451] [2023-02-15 13:12:55,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426850451] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:55,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:55,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:12:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866161559] [2023-02-15 13:12:55,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:55,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:12:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:12:55,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:12:55,649 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:55,695 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2023-02-15 13:12:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:12:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 13:12:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:55,696 INFO L225 Difference]: With dead ends: 162 [2023-02-15 13:12:55,697 INFO L226 Difference]: Without dead ends: 158 [2023-02-15 13:12:55,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:12:55,698 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 11 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:55,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:12:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-02-15 13:12:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2023-02-15 13:12:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.7346938775510203) internal successors, (170), 151 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2023-02-15 13:12:55,703 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 11 [2023-02-15 13:12:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:55,704 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2023-02-15 13:12:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,704 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2023-02-15 13:12:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 13:12:55,705 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:55,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:12:55,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 13:12:55,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 543499593, now seen corresponding path program 1 times [2023-02-15 13:12:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:55,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913536419] [2023-02-15 13:12:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:55,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:55,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913536419] [2023-02-15 13:12:55,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913536419] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:12:55,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:12:55,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:12:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548443396] [2023-02-15 13:12:55,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:12:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:12:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:12:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:12:55,778 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:55,818 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2023-02-15 13:12:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:12:55,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-15 13:12:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:55,823 INFO L225 Difference]: With dead ends: 162 [2023-02-15 13:12:55,824 INFO L226 Difference]: Without dead ends: 162 [2023-02-15 13:12:55,824 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 [2023-02-15 13:12:55,826 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:55,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 237 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:12:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-15 13:12:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2023-02-15 13:12:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.7244897959183674) internal successors, (169), 151 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2023-02-15 13:12:55,838 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 18 [2023-02-15 13:12:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:55,839 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2023-02-15 13:12:55,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2023-02-15 13:12:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 13:12:55,840 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:55,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:12:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 13:12:55,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 570713568, now seen corresponding path program 1 times [2023-02-15 13:12:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:55,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206055768] [2023-02-15 13:12:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:56,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206055768] [2023-02-15 13:12:56,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206055768] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:12:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761383834] [2023-02-15 13:12:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:56,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:12:56,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:12:56,041 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) [2023-02-15 13:12:56,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 13:12:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:56,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:12:56,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:12:56,194 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 [2023-02-15 13:12:56,243 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 13:12:56,244 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 21 [2023-02-15 13:12:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:56,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:12:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:56,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761383834] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:12:56,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:12:56,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2023-02-15 13:12:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530801236] [2023-02-15 13:12:56,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:12:56,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 13:12:56,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:12:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 13:12:56,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:12:56,435 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:12:56,633 INFO L93 Difference]: Finished difference Result 195 states and 216 transitions. [2023-02-15 13:12:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:12:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 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 18 [2023-02-15 13:12:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:12:56,635 INFO L225 Difference]: With dead ends: 195 [2023-02-15 13:12:56,635 INFO L226 Difference]: Without dead ends: 195 [2023-02-15 13:12:56,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:12:56,637 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 439 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:12:56,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 193 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:12:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-02-15 13:12:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 152. [2023-02-15 13:12:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 150 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2023-02-15 13:12:56,641 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 18 [2023-02-15 13:12:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:12:56,642 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2023-02-15 13:12:56,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:12:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2023-02-15 13:12:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 13:12:56,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:56,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:12:56,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 13:12:56,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:12:56,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:12:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:56,849 INFO L85 PathProgramCache]: Analyzing trace with hash 570713569, now seen corresponding path program 1 times [2023-02-15 13:12:56,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:56,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099915642] [2023-02-15 13:12:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:56,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:12:57,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099915642] [2023-02-15 13:12:57,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099915642] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:12:57,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080841660] [2023-02-15 13:12:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:57,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:12:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:12:57,068 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) [2023-02-15 13:12:57,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 13:12:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:12:57,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 13:12:57,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:12:57,158 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 [2023-02-15 13:12:57,162 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 [2023-02-15 13:12:57,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:12:57,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 13:12:57,233 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 13:12:57,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-15 13:12:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:12:57,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:13:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:01,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080841660] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:13:01,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:13:01,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-02-15 13:13:01,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179434521] [2023-02-15 13:13:01,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:13:01,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 13:13:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:01,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 13:13:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:13:01,535 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:01,852 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2023-02-15 13:13:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:13:01,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 18 [2023-02-15 13:13:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:01,854 INFO L225 Difference]: With dead ends: 203 [2023-02-15 13:13:01,854 INFO L226 Difference]: Without dead ends: 203 [2023-02-15 13:13:01,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-15 13:13:01,855 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 430 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:01,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 214 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 13:13:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-15 13:13:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 151. [2023-02-15 13:13:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 149 states have internal predecessors, (167), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2023-02-15 13:13:01,858 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 18 [2023-02-15 13:13:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:01,858 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2023-02-15 13:13:01,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2023-02-15 13:13:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 13:13:01,859 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:01,859 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:13:01,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 13:13:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 13:13:02,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -317039615, now seen corresponding path program 1 times [2023-02-15 13:13:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:02,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185131784] [2023-02-15 13:13:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:13:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:02,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185131784] [2023-02-15 13:13:02,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185131784] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:02,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:02,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:13:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253559100] [2023-02-15 13:13:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:13:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:13:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:13:02,170 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:02,282 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2023-02-15 13:13:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:13:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-15 13:13:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:02,283 INFO L225 Difference]: With dead ends: 150 [2023-02-15 13:13:02,284 INFO L226 Difference]: Without dead ends: 150 [2023-02-15 13:13:02,284 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 [2023-02-15 13:13:02,284 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 8 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:02,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 364 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:13:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-02-15 13:13:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-02-15 13:13:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.683673469387755) internal successors, (165), 148 states have internal predecessors, (165), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2023-02-15 13:13:02,290 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 19 [2023-02-15 13:13:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:02,290 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2023-02-15 13:13:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2023-02-15 13:13:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 13:13:02,293 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:02,293 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:13:02,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 13:13:02,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:02,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash -317039614, now seen corresponding path program 1 times [2023-02-15 13:13:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:02,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099198850] [2023-02-15 13:13:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:02,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:13:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:02,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099198850] [2023-02-15 13:13:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099198850] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:02,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:02,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:13:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052054229] [2023-02-15 13:13:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:13:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:13:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:13:02,471 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:02,587 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2023-02-15 13:13:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:13:02,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-15 13:13:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:02,590 INFO L225 Difference]: With dead ends: 149 [2023-02-15 13:13:02,590 INFO L226 Difference]: Without dead ends: 149 [2023-02-15 13:13:02,590 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 [2023-02-15 13:13:02,591 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 6 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:02,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 377 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:13:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-15 13:13:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-02-15 13:13:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.663265306122449) internal successors, (163), 147 states have internal predecessors, (163), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 166 transitions. [2023-02-15 13:13:02,595 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 166 transitions. Word has length 19 [2023-02-15 13:13:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:02,595 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 166 transitions. [2023-02-15 13:13:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 166 transitions. [2023-02-15 13:13:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 13:13:02,597 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:02,597 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] [2023-02-15 13:13:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 13:13:02,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash -294047799, now seen corresponding path program 1 times [2023-02-15 13:13:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:02,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774832748] [2023-02-15 13:13:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:02,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774832748] [2023-02-15 13:13:02,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774832748] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:02,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:02,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 13:13:02,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150270781] [2023-02-15 13:13:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:02,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:13:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:13:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:13:02,805 INFO L87 Difference]: Start difference. First operand 149 states and 166 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) [2023-02-15 13:13:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:03,068 INFO L93 Difference]: Finished difference Result 150 states and 165 transitions. [2023-02-15 13:13:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:13:03,068 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 [2023-02-15 13:13:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:03,069 INFO L225 Difference]: With dead ends: 150 [2023-02-15 13:13:03,069 INFO L226 Difference]: Without dead ends: 150 [2023-02-15 13:13:03,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:13:03,070 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:03,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 539 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:13:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-02-15 13:13:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2023-02-15 13:13:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.653061224489796) internal successors, (162), 147 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2023-02-15 13:13:03,073 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 22 [2023-02-15 13:13:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:03,073 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2023-02-15 13:13:03,074 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) [2023-02-15 13:13:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2023-02-15 13:13:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 13:13:03,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:03,074 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] [2023-02-15 13:13:03,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 13:13:03,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -294047798, now seen corresponding path program 1 times [2023-02-15 13:13:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:03,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113550976] [2023-02-15 13:13:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113550976] [2023-02-15 13:13:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113550976] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:03,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:03,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 13:13:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424261441] [2023-02-15 13:13:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:13:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:13:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:13:03,397 INFO L87 Difference]: Start difference. First operand 149 states and 165 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) [2023-02-15 13:13:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:03,708 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2023-02-15 13:13:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:13:03,709 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 [2023-02-15 13:13:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:03,710 INFO L225 Difference]: With dead ends: 149 [2023-02-15 13:13:03,710 INFO L226 Difference]: Without dead ends: 149 [2023-02-15 13:13:03,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:13:03,711 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 43 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:03,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 563 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:13:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-15 13:13:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-02-15 13:13:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.6428571428571428) internal successors, (161), 147 states have internal predecessors, (161), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2023-02-15 13:13:03,714 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 22 [2023-02-15 13:13:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:03,714 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2023-02-15 13:13:03,714 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) [2023-02-15 13:13:03,715 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2023-02-15 13:13:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 13:13:03,715 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:03,715 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] [2023-02-15 13:13:03,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 13:13:03,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1755349544, now seen corresponding path program 1 times [2023-02-15 13:13:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:03,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379788253] [2023-02-15 13:13:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:03,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:03,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379788253] [2023-02-15 13:13:03,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379788253] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:03,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:03,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 13:13:03,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273015372] [2023-02-15 13:13:03,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 13:13:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 13:13:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 13:13:03,958 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:04,186 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2023-02-15 13:13:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 13:13:04,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-15 13:13:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:04,187 INFO L225 Difference]: With dead ends: 150 [2023-02-15 13:13:04,187 INFO L226 Difference]: Without dead ends: 150 [2023-02-15 13:13:04,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:13:04,188 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 50 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:04,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 397 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:13:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-02-15 13:13:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2023-02-15 13:13:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.6326530612244898) internal successors, (160), 147 states have internal predecessors, (160), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2023-02-15 13:13:04,192 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 25 [2023-02-15 13:13:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:04,192 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2023-02-15 13:13:04,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2023-02-15 13:13:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 13:13:04,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:04,192 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] [2023-02-15 13:13:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-15 13:13:04,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1755349545, now seen corresponding path program 1 times [2023-02-15 13:13:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:04,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115670857] [2023-02-15 13:13:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:04,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:04,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115670857] [2023-02-15 13:13:04,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115670857] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:04,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:04,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 13:13:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066774617] [2023-02-15 13:13:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:04,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 13:13:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 13:13:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 13:13:04,582 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:04,896 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2023-02-15 13:13:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 13:13:04,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-15 13:13:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:04,897 INFO L225 Difference]: With dead ends: 149 [2023-02-15 13:13:04,897 INFO L226 Difference]: Without dead ends: 149 [2023-02-15 13:13:04,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:13:04,898 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 46 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:04,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 565 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:13:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-15 13:13:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-02-15 13:13:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 147 states have internal predecessors, (159), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2023-02-15 13:13:04,901 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 25 [2023-02-15 13:13:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:04,902 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2023-02-15 13:13:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2023-02-15 13:13:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 13:13:04,902 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:04,902 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] [2023-02-15 13:13:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 13:13:04,902 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:04,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1903478128, now seen corresponding path program 1 times [2023-02-15 13:13:04,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:04,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292874170] [2023-02-15 13:13:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:04,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:05,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292874170] [2023-02-15 13:13:05,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292874170] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:05,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:05,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 13:13:05,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573813299] [2023-02-15 13:13:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:05,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 13:13:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 13:13:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:13:05,159 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2023-02-15 13:13:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:05,453 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2023-02-15 13:13:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 13:13:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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 [2023-02-15 13:13:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:05,455 INFO L225 Difference]: With dead ends: 151 [2023-02-15 13:13:05,455 INFO L226 Difference]: Without dead ends: 151 [2023-02-15 13:13:05,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-02-15 13:13:05,455 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 57 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:05,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 471 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:13:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-15 13:13:05,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2023-02-15 13:13:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.6122448979591837) internal successors, (158), 147 states have internal predecessors, (158), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 161 transitions. [2023-02-15 13:13:05,459 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 161 transitions. Word has length 28 [2023-02-15 13:13:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:05,459 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 161 transitions. [2023-02-15 13:13:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2023-02-15 13:13:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 161 transitions. [2023-02-15 13:13:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 13:13:05,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:05,460 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] [2023-02-15 13:13:05,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 13:13:05,460 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1903478127, now seen corresponding path program 1 times [2023-02-15 13:13:05,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:05,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170541624] [2023-02-15 13:13:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:05,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170541624] [2023-02-15 13:13:05,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170541624] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:13:05,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:13:05,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 13:13:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530351050] [2023-02-15 13:13:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:13:05,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 13:13:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:13:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 13:13:05,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:13:05,840 INFO L87 Difference]: Start difference. First operand 149 states and 161 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2023-02-15 13:13:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:13:06,318 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2023-02-15 13:13:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 13:13:06,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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 [2023-02-15 13:13:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:13:06,320 INFO L225 Difference]: With dead ends: 149 [2023-02-15 13:13:06,320 INFO L226 Difference]: Without dead ends: 149 [2023-02-15 13:13:06,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-02-15 13:13:06,320 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 49 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 13:13:06,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 717 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 13:13:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-15 13:13:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-02-15 13:13:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.6020408163265305) internal successors, (157), 147 states have internal predecessors, (157), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:13:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2023-02-15 13:13:06,324 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 28 [2023-02-15 13:13:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:13:06,324 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2023-02-15 13:13:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2023-02-15 13:13:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2023-02-15 13:13:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 13:13:06,325 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:13:06,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:13:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-15 13:13:06,326 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-02-15 13:13:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:13:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1030942896, now seen corresponding path program 1 times [2023-02-15 13:13:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:13:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322708421] [2023-02-15 13:13:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:13:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:06,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:13:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322708421] [2023-02-15 13:13:06,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322708421] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:13:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435260834] [2023-02-15 13:13:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:13:06,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:13:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:13:06,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:13:06,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 13:13:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:13:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 13:13:07,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:13:07,091 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 [2023-02-15 13:13:07,111 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 [2023-02-15 13:13:07,119 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 [2023-02-15 13:13:07,139 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 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:13:07,145 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 23 treesize of output 22 [2023-02-15 13:13:07,173 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 13:13:07,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-15 13:13:07,185 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 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 13:13:07,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 13:13:07,232 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 13:13:07,233 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-15 13:13:07,238 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 20 treesize of output 22 [2023-02-15 13:13:07,286 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 13:13:07,286 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-15 13:13:07,291 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 20 treesize of output 22 [2023-02-15 13:13:07,338 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 13:13:07,339 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-15 13:13:07,345 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 20 treesize of output 22 [2023-02-15 13:13:07,395 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 13:13:07,396 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-15 13:13:07,401 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 20 treesize of output 22 [2023-02-15 13:13:07,415 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 19 treesize of output 7 [2023-02-15 13:13:07,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 13:13:07,420 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 27 treesize of output 11 [2023-02-15 13:13:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:13:07,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:13:07,507 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_create_tree_~node~0#1.offset| 4))) (and (forall ((v_ArrVal_607 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_607) |c_ULTIMATE.start_create_tree_~node~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_608 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_608) |c_ULTIMATE.start_create_tree_~node~0#1.base|) .cse1) 0)))) is different from false [2023-02-15 13:13:07,833 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse3 (+ |c_ULTIMATE.start_create_tree_~node~0#1.offset| 4))) (and (forall ((v_ArrVal_603 (Array Int Int)) (v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int)) (v_ArrVal_607 (Array Int Int)) (v_ArrVal_606 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_604))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_603) .cse1 v_ArrVal_605) (select (select (store .cse2 .cse1 v_ArrVal_606) |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_607))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_604 (Array Int Int)) (v_ArrVal_606 (Array Int Int)) (v_ArrVal_608 (Array Int Int))) (= (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_604))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_606)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_608)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) .cse3) 0)))) is different from false [2023-02-15 13:13:07,859 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_create_tree_~node~0#1.offset| 4))) (and (forall ((v_ArrVal_601 (Array Int Int)) (v_ArrVal_603 (Array Int Int)) (v_ArrVal_602 (Array Int Int)) (v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int)) (v_ArrVal_607 (Array Int Int)) (v_ArrVal_606 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem12#1.base| v_ArrVal_601))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (let ((.cse2 (store .cse3 .cse0 v_ArrVal_604))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_#t~mem12#1.base| v_ArrVal_602) .cse0 v_ArrVal_603) .cse1 v_ArrVal_605) (select (select (store .cse2 .cse1 v_ArrVal_606) |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_607))))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) .cse4) 0)) (forall ((v_ArrVal_601 (Array Int Int)) (v_ArrVal_604 (Array Int Int)) (v_ArrVal_606 (Array Int Int)) (v_ArrVal_608 (Array Int Int))) (= (select (select (let ((.cse5 (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem12#1.base| v_ArrVal_601))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_604)))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_606)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|) v_ArrVal_608)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) .cse4) 0)))) is different from false [2023-02-15 13:13:10,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 13:13:10,476 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 226 treesize of output 111 [2023-02-15 13:13:10,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 13:13:10,549 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 1231184 treesize of output 982190 [2023-02-15 13:13:10,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 13:13:10,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 982180 treesize of output 941820 [2023-02-15 13:13:10,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 13:13:10,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 941820 treesize of output 836336 [2023-02-15 13:13:10,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 13:13:10,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 836336 treesize of output 760912 [2023-02-15 13:13:10,782 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 760912 treesize of output 758864