./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_flag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/list-ext-properties/list-ext_flag.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 ddbf4fb8c36ef19bcf4ca33c6e346a064158dbfa .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:50:59,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:50:59,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:50:59,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:50:59,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:50:59,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:50:59,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:50:59,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:50:59,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:50:59,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:50:59,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:50:59,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:50:59,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:50:59,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:50:59,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:50:59,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:50:59,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:50:59,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:50:59,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:50:59,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:50:59,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:50:59,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:50:59,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:50:59,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:50:59,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:50:59,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:50:59,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:50:59,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:50:59,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:50:59,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:50:59,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:50:59,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:50:59,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:50:59,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:50:59,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:50:59,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:50:59,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:50:59,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:50:59,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:50:59,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:50:59,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:50:59,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:50:59,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:50:59,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:50:59,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:50:59,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:50:59,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:50:59,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:50:59,275 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:50:59,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:50:59,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:50:59,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:50:59,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:50:59,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:50:59,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:50:59,277 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:50:59,277 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:50:59,277 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:50:59,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:50:59,287 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:50:59,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:50:59,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:50:59,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:50:59,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:50:59,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:50:59,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:50:59,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:50:59,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:50:59,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:50:59,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:50:59,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:50:59,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddbf4fb8c36ef19bcf4ca33c6e346a064158dbfa [2021-08-27 05:50:59,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:50:59,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:50:59,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:50:59,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:50:59,661 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:50:59,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2021-08-27 05:50:59,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7f28652/40d8068e2c354f2ca0aba3c0ac5d7e9f/FLAG13a8ba133 [2021-08-27 05:51:00,241 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:51:00,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2021-08-27 05:51:00,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7f28652/40d8068e2c354f2ca0aba3c0ac5d7e9f/FLAG13a8ba133 [2021-08-27 05:51:00,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7f28652/40d8068e2c354f2ca0aba3c0ac5d7e9f [2021-08-27 05:51:00,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:51:00,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:51:00,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:51:00,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:51:00,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:51:00,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:51:00" (1/1) ... [2021-08-27 05:51:00,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2936cd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:00, skipping insertion in model container [2021-08-27 05:51:00,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:51:00" (1/1) ... [2021-08-27 05:51:00,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:51:00,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:51:00,929 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_flag.i[23527,23540] [2021-08-27 05:51:00,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:51:00,947 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:51:01,003 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_flag.i[23527,23540] [2021-08-27 05:51:01,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:51:01,028 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:51:01,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01 WrapperNode [2021-08-27 05:51:01,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:51:01,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:51:01,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:51:01,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:51:01,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:51:01,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:51:01,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:51:01,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:51:01,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (1/1) ... [2021-08-27 05:51:01,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:51:01,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:01,117 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) [2021-08-27 05:51:01,119 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 [2021-08-27 05:51:01,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:51:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:51:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:51:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:51:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:51:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 05:51:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:51:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:51:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:51:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:51:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:51:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:51:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:51:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:51:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:51:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:51:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:51:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:51:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:51:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:51:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:51:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:51:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:51:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:51:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:51:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:51:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:51:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:51:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:51:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:51:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:51:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:51:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:51:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:51:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:51:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:51:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:51:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:51:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:51:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:51:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:51:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:51:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:51:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:51:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:51:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:51:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:51:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:51:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:51:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:51:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:51:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:51:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 05:51:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:51:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:51:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:51:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:51:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:51:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:51:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:51:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:51:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:51:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:51:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:51:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:51:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:51:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:51:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:51:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:51:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:51:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:51:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:51:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:51:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:51:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:51:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:51:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:51:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:51:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:51:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:51:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:51:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:51:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:51:01,496 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 05:51:01,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:51:01,808 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-27 05:51:01,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:51:01 BoogieIcfgContainer [2021-08-27 05:51:01,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:51:01,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:51:01,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:51:01,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:51:01,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:51:00" (1/3) ... [2021-08-27 05:51:01,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6883caff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:51:01, skipping insertion in model container [2021-08-27 05:51:01,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:51:01" (2/3) ... [2021-08-27 05:51:01,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6883caff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:51:01, skipping insertion in model container [2021-08-27 05:51:01,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:51:01" (3/3) ... [2021-08-27 05:51:01,824 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2021-08-27 05:51:01,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:51:01,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2021-08-27 05:51:01,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:51:01,877 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:51:01,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-08-27 05:51:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 103 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:51:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 05:51:01,902 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:01,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:01,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash -847606299, now seen corresponding path program 1 times [2021-08-27 05:51:01,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:01,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004995630] [2021-08-27 05:51:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:01,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:02,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:02,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004995630] [2021-08-27 05:51:02,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004995630] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:02,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:02,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:51:02,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080572250] [2021-08-27 05:51:02,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:51:02,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:51:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:51:02,199 INFO L87 Difference]: Start difference. First operand has 109 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 103 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:02,482 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2021-08-27 05:51:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:51:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 05:51:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:02,490 INFO L225 Difference]: With dead ends: 128 [2021-08-27 05:51:02,490 INFO L226 Difference]: Without dead ends: 120 [2021-08-27 05:51:02,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:51:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-27 05:51:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2021-08-27 05:51:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 96 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2021-08-27 05:51:02,532 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 8 [2021-08-27 05:51:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:02,533 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2021-08-27 05:51:02,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2021-08-27 05:51:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 05:51:02,534 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:02,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:02,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:51:02,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:02,535 INFO L82 PathProgramCache]: Analyzing trace with hash -847606298, now seen corresponding path program 1 times [2021-08-27 05:51:02,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:02,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192742768] [2021-08-27 05:51:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:02,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:02,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:02,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192742768] [2021-08-27 05:51:02,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192742768] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:02,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:02,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:51:02,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924601488] [2021-08-27 05:51:02,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:51:02,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:51:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:51:02,641 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:02,812 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2021-08-27 05:51:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:51:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 05:51:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:02,816 INFO L225 Difference]: With dead ends: 99 [2021-08-27 05:51:02,816 INFO L226 Difference]: Without dead ends: 99 [2021-08-27 05:51:02,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:51:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-27 05:51:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-08-27 05:51:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 95 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2021-08-27 05:51:02,830 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 8 [2021-08-27 05:51:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:02,831 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2021-08-27 05:51:02,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2021-08-27 05:51:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 05:51:02,832 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:02,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:02,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:51:02,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:02,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1330507837, now seen corresponding path program 1 times [2021-08-27 05:51:02,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:02,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989751738] [2021-08-27 05:51:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:02,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:02,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:02,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989751738] [2021-08-27 05:51:02,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989751738] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:02,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:02,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 05:51:02,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696391462] [2021-08-27 05:51:02,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:51:02,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:51:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:51:02,947 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:03,161 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2021-08-27 05:51:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:51:03,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 05:51:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:03,163 INFO L225 Difference]: With dead ends: 109 [2021-08-27 05:51:03,163 INFO L226 Difference]: Without dead ends: 109 [2021-08-27 05:51:03,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:51:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-27 05:51:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2021-08-27 05:51:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.7) internal successors, (102), 87 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2021-08-27 05:51:03,169 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 13 [2021-08-27 05:51:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:03,169 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2021-08-27 05:51:03,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2021-08-27 05:51:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 05:51:03,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:03,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:03,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:51:03,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1330507836, now seen corresponding path program 1 times [2021-08-27 05:51:03,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:03,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018725768] [2021-08-27 05:51:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:03,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:03,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:03,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018725768] [2021-08-27 05:51:03,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018725768] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:03,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:03,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 05:51:03,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829261487] [2021-08-27 05:51:03,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:51:03,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:51:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:51:03,263 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:03,499 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-08-27 05:51:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:51:03,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 05:51:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:03,501 INFO L225 Difference]: With dead ends: 127 [2021-08-27 05:51:03,501 INFO L226 Difference]: Without dead ends: 127 [2021-08-27 05:51:03,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:51:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-27 05:51:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2021-08-27 05:51:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 108 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2021-08-27 05:51:03,507 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 13 [2021-08-27 05:51:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:03,508 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2021-08-27 05:51:03,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2021-08-27 05:51:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:51:03,509 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:03,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:03,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 05:51:03,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:03,510 INFO L82 PathProgramCache]: Analyzing trace with hash 193832546, now seen corresponding path program 1 times [2021-08-27 05:51:03,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:03,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139197592] [2021-08-27 05:51:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:03,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:03,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:03,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139197592] [2021-08-27 05:51:03,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139197592] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:03,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:03,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 05:51:03,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361368801] [2021-08-27 05:51:03,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:51:03,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:51:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:51:03,606 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:03,789 INFO L93 Difference]: Finished difference Result 160 states and 181 transitions. [2021-08-27 05:51:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:51:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-27 05:51:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:03,792 INFO L225 Difference]: With dead ends: 160 [2021-08-27 05:51:03,792 INFO L226 Difference]: Without dead ends: 160 [2021-08-27 05:51:03,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:51:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-27 05:51:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 117. [2021-08-27 05:51:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.4886363636363635) internal successors, (131), 113 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2021-08-27 05:51:03,800 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 19 [2021-08-27 05:51:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:03,800 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2021-08-27 05:51:03,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2021-08-27 05:51:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 05:51:03,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:03,801 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:03,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 05:51:03,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1616463057, now seen corresponding path program 1 times [2021-08-27 05:51:03,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:03,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641313061] [2021-08-27 05:51:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:03,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:03,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:03,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641313061] [2021-08-27 05:51:03,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641313061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:03,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:03,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 05:51:03,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017368960] [2021-08-27 05:51:03,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:51:03,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:51:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:51:03,891 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:04,185 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2021-08-27 05:51:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:51:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-27 05:51:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:04,187 INFO L225 Difference]: With dead ends: 173 [2021-08-27 05:51:04,187 INFO L226 Difference]: Without dead ends: 173 [2021-08-27 05:51:04,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:51:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-08-27 05:51:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 117. [2021-08-27 05:51:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 113 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-08-27 05:51:04,193 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 21 [2021-08-27 05:51:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:04,193 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-08-27 05:51:04,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-08-27 05:51:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 05:51:04,194 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:04,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:04,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 05:51:04,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr31ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:04,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1497879082, now seen corresponding path program 1 times [2021-08-27 05:51:04,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:04,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698254036] [2021-08-27 05:51:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:04,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:04,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:04,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698254036] [2021-08-27 05:51:04,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698254036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:04,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:04,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 05:51:04,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615396182] [2021-08-27 05:51:04,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:51:04,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:51:04,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:51:04,260 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:04,425 INFO L93 Difference]: Finished difference Result 126 states and 141 transitions. [2021-08-27 05:51:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:51:04,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-27 05:51:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:04,426 INFO L225 Difference]: With dead ends: 126 [2021-08-27 05:51:04,426 INFO L226 Difference]: Without dead ends: 126 [2021-08-27 05:51:04,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:51:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-08-27 05:51:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2021-08-27 05:51:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 114 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-08-27 05:51:04,431 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 23 [2021-08-27 05:51:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:04,431 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-08-27 05:51:04,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-08-27 05:51:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 05:51:04,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:04,433 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:04,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 05:51:04,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr44ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:04,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1394657415, now seen corresponding path program 1 times [2021-08-27 05:51:04,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:04,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037784567] [2021-08-27 05:51:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:04,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:04,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:04,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037784567] [2021-08-27 05:51:04,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037784567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:04,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:04,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:51:04,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763633607] [2021-08-27 05:51:04,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:51:04,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:51:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:51:04,526 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:04,695 INFO L93 Difference]: Finished difference Result 155 states and 172 transitions. [2021-08-27 05:51:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:51:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 05:51:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:04,697 INFO L225 Difference]: With dead ends: 155 [2021-08-27 05:51:04,697 INFO L226 Difference]: Without dead ends: 145 [2021-08-27 05:51:04,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:51:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-27 05:51:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-08-27 05:51:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 95 states have (on average 1.431578947368421) internal successors, (136), 119 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2021-08-27 05:51:04,701 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 26 [2021-08-27 05:51:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:04,702 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2021-08-27 05:51:04,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2021-08-27 05:51:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 05:51:04,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:04,703 INFO L512 BasicCegarLoop]: 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] [2021-08-27 05:51:04,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 05:51:04,703 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:04,707 INFO L82 PathProgramCache]: Analyzing trace with hash -113018189, now seen corresponding path program 1 times [2021-08-27 05:51:04,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:04,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763663354] [2021-08-27 05:51:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:04,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:04,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:04,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763663354] [2021-08-27 05:51:04,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763663354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:04,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:04,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 05:51:04,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386802648] [2021-08-27 05:51:04,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:51:04,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:04,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:51:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:51:04,790 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:05,071 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2021-08-27 05:51:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:51:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 05:51:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:05,072 INFO L225 Difference]: With dead ends: 124 [2021-08-27 05:51:05,072 INFO L226 Difference]: Without dead ends: 124 [2021-08-27 05:51:05,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:51:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-27 05:51:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2021-08-27 05:51:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 117 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 137 transitions. [2021-08-27 05:51:05,077 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 137 transitions. Word has length 26 [2021-08-27 05:51:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:05,077 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 137 transitions. [2021-08-27 05:51:05,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2021-08-27 05:51:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 05:51:05,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:05,078 INFO L512 BasicCegarLoop]: 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] [2021-08-27 05:51:05,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 05:51:05,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:05,079 INFO L82 PathProgramCache]: Analyzing trace with hash -113018188, now seen corresponding path program 1 times [2021-08-27 05:51:05,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:05,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947156213] [2021-08-27 05:51:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:05,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:05,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:05,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947156213] [2021-08-27 05:51:05,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947156213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:05,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:05,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 05:51:05,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492863450] [2021-08-27 05:51:05,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:51:05,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:51:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:51:05,185 INFO L87 Difference]: Start difference. First operand 121 states and 137 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:05,502 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2021-08-27 05:51:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:51:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 05:51:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:05,503 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:51:05,503 INFO L226 Difference]: Without dead ends: 121 [2021-08-27 05:51:05,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:51:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-27 05:51:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2021-08-27 05:51:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 100 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2021-08-27 05:51:05,507 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 26 [2021-08-27 05:51:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:05,508 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2021-08-27 05:51:05,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2021-08-27 05:51:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 05:51:05,509 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:05,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:05,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 05:51:05,509 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr33REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:05,509 INFO L82 PathProgramCache]: Analyzing trace with hash 870242649, now seen corresponding path program 1 times [2021-08-27 05:51:05,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:05,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620220755] [2021-08-27 05:51:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:05,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:05,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:05,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620220755] [2021-08-27 05:51:05,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620220755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:05,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:05,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 05:51:05,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270576233] [2021-08-27 05:51:05,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:51:05,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:51:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:51:05,691 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:05,917 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-08-27 05:51:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:51:05,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-27 05:51:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:05,918 INFO L225 Difference]: With dead ends: 113 [2021-08-27 05:51:05,918 INFO L226 Difference]: Without dead ends: 102 [2021-08-27 05:51:05,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:51:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-27 05:51:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2021-08-27 05:51:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-08-27 05:51:05,921 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 29 [2021-08-27 05:51:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:05,922 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-08-27 05:51:05,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-08-27 05:51:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-27 05:51:05,922 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:05,922 INFO L512 BasicCegarLoop]: 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] [2021-08-27 05:51:05,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 05:51:05,923 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash -809558702, now seen corresponding path program 1 times [2021-08-27 05:51:05,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:05,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123208338] [2021-08-27 05:51:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:05,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:06,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:51:06,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:06,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123208338] [2021-08-27 05:51:06,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123208338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:06,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:06,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 05:51:06,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757967803] [2021-08-27 05:51:06,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:51:06,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:06,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:51:06,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:51:06,022 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:06,195 INFO L93 Difference]: Finished difference Result 144 states and 164 transitions. [2021-08-27 05:51:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:51:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-27 05:51:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:06,197 INFO L225 Difference]: With dead ends: 144 [2021-08-27 05:51:06,197 INFO L226 Difference]: Without dead ends: 144 [2021-08-27 05:51:06,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:51:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-27 05:51:06,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 100. [2021-08-27 05:51:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 96 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-08-27 05:51:06,201 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 32 [2021-08-27 05:51:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:06,201 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-08-27 05:51:06,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-08-27 05:51:06,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-27 05:51:06,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:06,206 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:06,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 05:51:06,206 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:06,207 INFO L82 PathProgramCache]: Analyzing trace with hash -129500332, now seen corresponding path program 1 times [2021-08-27 05:51:06,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:06,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704843994] [2021-08-27 05:51:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:06,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:06,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:06,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704843994] [2021-08-27 05:51:06,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704843994] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:06,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857143633] [2021-08-27 05:51:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:06,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:06,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:06,296 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) [2021-08-27 05:51:06,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 05:51:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:06,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:51:06,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:06,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857143633] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:06,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:06,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-08-27 05:51:06,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419716259] [2021-08-27 05:51:06,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:51:06,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:51:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:51:06,703 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:06,837 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2021-08-27 05:51:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:51:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-27 05:51:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:06,839 INFO L225 Difference]: With dead ends: 164 [2021-08-27 05:51:06,839 INFO L226 Difference]: Without dead ends: 164 [2021-08-27 05:51:06,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:51:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-27 05:51:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 113. [2021-08-27 05:51:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 109 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2021-08-27 05:51:06,843 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 32 [2021-08-27 05:51:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:06,843 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2021-08-27 05:51:06,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2021-08-27 05:51:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 05:51:06,844 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:06,844 INFO L512 BasicCegarLoop]: 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, 1] [2021-08-27 05:51:06,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:07,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 05:51:07,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -569851967, now seen corresponding path program 1 times [2021-08-27 05:51:07,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:07,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855101796] [2021-08-27 05:51:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:07,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:07,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:07,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855101796] [2021-08-27 05:51:07,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855101796] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:07,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583833774] [2021-08-27 05:51:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:07,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:07,426 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) [2021-08-27 05:51:07,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 05:51:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:07,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-27 05:51:07,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:07,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:07,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:07,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 21 [2021-08-27 05:51:07,950 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:07,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:08,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:08,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:08,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-08-27 05:51:08,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:51:08,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-08-27 05:51:08,433 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-08-27 05:51:08,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-08-27 05:51:08,700 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-08-27 05:51:08,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 30 [2021-08-27 05:51:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:08,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583833774] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:08,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:08,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-08-27 05:51:08,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646123421] [2021-08-27 05:51:08,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 05:51:08,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 05:51:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-08-27 05:51:08,736 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:09,942 INFO L93 Difference]: Finished difference Result 306 states and 340 transitions. [2021-08-27 05:51:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 05:51:09,942 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-08-27 05:51:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:09,944 INFO L225 Difference]: With dead ends: 306 [2021-08-27 05:51:09,944 INFO L226 Difference]: Without dead ends: 306 [2021-08-27 05:51:09,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 760.6ms TimeCoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 05:51:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-08-27 05:51:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 146. [2021-08-27 05:51:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 142 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 169 transitions. [2021-08-27 05:51:09,949 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 169 transitions. Word has length 34 [2021-08-27 05:51:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:09,949 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 169 transitions. [2021-08-27 05:51:09,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 169 transitions. [2021-08-27 05:51:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 05:51:09,954 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:09,954 INFO L512 BasicCegarLoop]: 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, 1] [2021-08-27 05:51:09,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-27 05:51:10,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-27 05:51:10,180 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash -570159797, now seen corresponding path program 1 times [2021-08-27 05:51:10,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:10,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711500303] [2021-08-27 05:51:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:10,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:10,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:10,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711500303] [2021-08-27 05:51:10,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711500303] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:10,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950396819] [2021-08-27 05:51:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:10,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:10,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:10,392 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) [2021-08-27 05:51:10,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 05:51:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:10,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 05:51:10,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:10,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 05:51:10,816 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:10,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:10,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:51:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:10,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 11 [2021-08-27 05:51:10,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2021-08-27 05:51:11,023 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 05:51:11,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-08-27 05:51:11,206 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:51:11,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-08-27 05:51:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:11,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950396819] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:11,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:11,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-27 05:51:11,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718365802] [2021-08-27 05:51:11,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 05:51:11,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 05:51:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-08-27 05:51:11,215 INFO L87 Difference]: Start difference. First operand 146 states and 169 transitions. Second operand has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:11,938 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-08-27 05:51:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:51:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-08-27 05:51:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:11,940 INFO L225 Difference]: With dead ends: 242 [2021-08-27 05:51:11,940 INFO L226 Difference]: Without dead ends: 242 [2021-08-27 05:51:11,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 509.0ms TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 05:51:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-08-27 05:51:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 154. [2021-08-27 05:51:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.2962962962962963) internal successors, (175), 150 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2021-08-27 05:51:11,944 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 34 [2021-08-27 05:51:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:11,945 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2021-08-27 05:51:11,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2021-08-27 05:51:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 05:51:11,945 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:11,946 INFO L512 BasicCegarLoop]: 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, 1] [2021-08-27 05:51:11,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-08-27 05:51:12,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:12,161 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:12,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1187638495, now seen corresponding path program 1 times [2021-08-27 05:51:12,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:12,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117580130] [2021-08-27 05:51:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:12,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:12,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:12,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117580130] [2021-08-27 05:51:12,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117580130] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:12,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190179437] [2021-08-27 05:51:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:12,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:12,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:12,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:12,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 05:51:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:12,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 05:51:12,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:12,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 05:51:12,865 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:12,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:12,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 11 [2021-08-27 05:51:12,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:51:12,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2021-08-27 05:51:13,099 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 05:51:13,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-08-27 05:51:13,287 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:51:13,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-08-27 05:51:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:13,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190179437] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:13,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:13,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-27 05:51:13,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732216693] [2021-08-27 05:51:13,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 05:51:13,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 05:51:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-08-27 05:51:13,297 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:14,300 INFO L93 Difference]: Finished difference Result 277 states and 312 transitions. [2021-08-27 05:51:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:51:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-08-27 05:51:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:14,302 INFO L225 Difference]: With dead ends: 277 [2021-08-27 05:51:14,303 INFO L226 Difference]: Without dead ends: 277 [2021-08-27 05:51:14,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 526.3ms TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 05:51:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-08-27 05:51:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 163. [2021-08-27 05:51:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.2986111111111112) internal successors, (187), 159 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2021-08-27 05:51:14,307 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 34 [2021-08-27 05:51:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:14,307 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2021-08-27 05:51:14,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2021-08-27 05:51:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 05:51:14,308 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:14,308 INFO L512 BasicCegarLoop]: 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, 1] [2021-08-27 05:51:14,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:14,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-27 05:51:14,529 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:14,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:14,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1187946325, now seen corresponding path program 1 times [2021-08-27 05:51:14,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:14,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773637870] [2021-08-27 05:51:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:14,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:14,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:14,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773637870] [2021-08-27 05:51:14,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773637870] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:14,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937765058] [2021-08-27 05:51:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:14,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:14,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:14,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:14,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 05:51:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:15,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-27 05:51:15,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:15,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:15,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:51:15,371 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:15,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:15,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:15,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:15,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:15,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-08-27 05:51:15,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:51:15,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-08-27 05:51:15,723 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-08-27 05:51:15,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-08-27 05:51:15,966 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-08-27 05:51:15,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 29 [2021-08-27 05:51:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937765058] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:15,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:15,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-08-27 05:51:15,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949588266] [2021-08-27 05:51:15,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 05:51:15,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 05:51:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-08-27 05:51:15,978 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:17,129 INFO L93 Difference]: Finished difference Result 258 states and 292 transitions. [2021-08-27 05:51:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 05:51:17,130 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-08-27 05:51:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:17,131 INFO L225 Difference]: With dead ends: 258 [2021-08-27 05:51:17,131 INFO L226 Difference]: Without dead ends: 258 [2021-08-27 05:51:17,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 652.2ms TimeCoverageRelationStatistics Valid=271, Invalid=919, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 05:51:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-08-27 05:51:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 163. [2021-08-27 05:51:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.2916666666666667) internal successors, (186), 159 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2021-08-27 05:51:17,136 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 34 [2021-08-27 05:51:17,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:17,136 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2021-08-27 05:51:17,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2021-08-27 05:51:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 05:51:17,137 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:17,137 INFO L512 BasicCegarLoop]: 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, 1, 1, 1] [2021-08-27 05:51:17,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:17,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-27 05:51:17,353 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1832247170, now seen corresponding path program 1 times [2021-08-27 05:51:17,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:17,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056910654] [2021-08-27 05:51:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:17,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:17,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:17,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056910654] [2021-08-27 05:51:17,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056910654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:17,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503811404] [2021-08-27 05:51:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:17,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:17,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:17,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:17,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 05:51:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:17,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 05:51:17,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:18,113 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:51:18,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:18,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:51:18,359 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-27 05:51:18,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 31 [2021-08-27 05:51:18,569 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-27 05:51:18,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 27 [2021-08-27 05:51:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:18,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503811404] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:18,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:18,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-08-27 05:51:18,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334869924] [2021-08-27 05:51:18,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 05:51:18,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 05:51:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-08-27 05:51:18,623 INFO L87 Difference]: Start difference. First operand 163 states and 189 transitions. Second operand has 26 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:19,305 INFO L93 Difference]: Finished difference Result 266 states and 301 transitions. [2021-08-27 05:51:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 05:51:19,307 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-08-27 05:51:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:19,308 INFO L225 Difference]: With dead ends: 266 [2021-08-27 05:51:19,308 INFO L226 Difference]: Without dead ends: 266 [2021-08-27 05:51:19,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 445.0ms TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 05:51:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-08-27 05:51:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 166. [2021-08-27 05:51:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 162 states have internal predecessors, (190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2021-08-27 05:51:19,312 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 36 [2021-08-27 05:51:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:19,312 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2021-08-27 05:51:19,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2021-08-27 05:51:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 05:51:19,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:19,313 INFO L512 BasicCegarLoop]: 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, 1, 1, 1] [2021-08-27 05:51:19,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:19,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-27 05:51:19,521 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1832247171, now seen corresponding path program 1 times [2021-08-27 05:51:19,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:19,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585581451] [2021-08-27 05:51:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:19,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:19,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:19,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585581451] [2021-08-27 05:51:19,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585581451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:19,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130508694] [2021-08-27 05:51:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:19,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:19,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:19,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 05:51:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:20,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-27 05:51:20,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:20,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:20,422 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:20,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:20,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:51:20,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:20,650 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-27 05:51:20,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 79 treesize of output 53 [2021-08-27 05:51:20,660 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-08-27 05:51:20,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 28 [2021-08-27 05:51:20,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 31 [2021-08-27 05:51:20,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 16 [2021-08-27 05:51:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:20,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130508694] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:20,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:20,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-08-27 05:51:20,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555600459] [2021-08-27 05:51:20,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 05:51:20,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 05:51:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:51:20,825 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:21,442 INFO L93 Difference]: Finished difference Result 272 states and 310 transitions. [2021-08-27 05:51:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:51:21,443 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-08-27 05:51:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:21,444 INFO L225 Difference]: With dead ends: 272 [2021-08-27 05:51:21,444 INFO L226 Difference]: Without dead ends: 272 [2021-08-27 05:51:21,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 423.9ms TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2021-08-27 05:51:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-08-27 05:51:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 165. [2021-08-27 05:51:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.2876712328767124) internal successors, (188), 161 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2021-08-27 05:51:21,449 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 36 [2021-08-27 05:51:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:21,449 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2021-08-27 05:51:21,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2021-08-27 05:51:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-27 05:51:21,450 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:21,451 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:21,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:21,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:21,674 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr44ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:21,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:21,674 INFO L82 PathProgramCache]: Analyzing trace with hash -744971369, now seen corresponding path program 1 times [2021-08-27 05:51:21,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:21,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382598014] [2021-08-27 05:51:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:21,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:21,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:21,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382598014] [2021-08-27 05:51:21,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382598014] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:21,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043803197] [2021-08-27 05:51:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:21,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:21,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:21,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:21,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 05:51:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:22,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 05:51:22,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:22,510 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:22,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 05:51:22,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 18 [2021-08-27 05:51:22,767 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:51:22,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 38 [2021-08-27 05:51:22,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:51:22,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 30 [2021-08-27 05:51:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:23,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043803197] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:23,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-08-27 05:51:23,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243008708] [2021-08-27 05:51:23,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-27 05:51:23,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-27 05:51:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-08-27 05:51:23,025 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:24,818 INFO L93 Difference]: Finished difference Result 367 states and 414 transitions. [2021-08-27 05:51:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-27 05:51:24,819 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-08-27 05:51:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:24,820 INFO L225 Difference]: With dead ends: 367 [2021-08-27 05:51:24,820 INFO L226 Difference]: Without dead ends: 365 [2021-08-27 05:51:24,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 1238.8ms TimeCoverageRelationStatistics Valid=604, Invalid=2818, Unknown=0, NotChecked=0, Total=3422 [2021-08-27 05:51:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-08-27 05:51:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 192. [2021-08-27 05:51:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 173 states have (on average 1.329479768786127) internal successors, (230), 188 states have internal predecessors, (230), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 233 transitions. [2021-08-27 05:51:24,826 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 233 transitions. Word has length 39 [2021-08-27 05:51:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:24,826 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 233 transitions. [2021-08-27 05:51:24,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 233 transitions. [2021-08-27 05:51:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 05:51:24,827 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:24,827 INFO L512 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2021-08-27 05:51:24,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-27 05:51:25,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:25,041 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash 410314524, now seen corresponding path program 1 times [2021-08-27 05:51:25,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:25,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499830000] [2021-08-27 05:51:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:25,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:51:25,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:25,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499830000] [2021-08-27 05:51:25,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499830000] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:25,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571167158] [2021-08-27 05:51:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:25,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:25,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:25,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 05:51:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:25,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:51:25,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:25,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-08-27 05:51:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:25,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571167158] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:25,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:25,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-08-27 05:51:25,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701981560] [2021-08-27 05:51:25,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 05:51:25,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 05:51:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:51:25,811 INFO L87 Difference]: Start difference. First operand 192 states and 233 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:26,082 INFO L93 Difference]: Finished difference Result 428 states and 517 transitions. [2021-08-27 05:51:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 05:51:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-08-27 05:51:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:26,084 INFO L225 Difference]: With dead ends: 428 [2021-08-27 05:51:26,084 INFO L226 Difference]: Without dead ends: 428 [2021-08-27 05:51:26,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 189.8ms TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-08-27 05:51:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-27 05:51:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 258. [2021-08-27 05:51:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 239 states have (on average 1.397489539748954) internal successors, (334), 254 states have internal predecessors, (334), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 337 transitions. [2021-08-27 05:51:26,090 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 337 transitions. Word has length 40 [2021-08-27 05:51:26,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:26,090 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 337 transitions. [2021-08-27 05:51:26,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 337 transitions. [2021-08-27 05:51:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 05:51:26,091 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:26,091 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:26,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:26,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:26,305 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr44ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1936269525, now seen corresponding path program 1 times [2021-08-27 05:51:26,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:26,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095323123] [2021-08-27 05:51:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:26,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 05:51:26,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:26,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095323123] [2021-08-27 05:51:26,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095323123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:51:26,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:51:26,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 05:51:26,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099605253] [2021-08-27 05:51:26,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:51:26,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:51:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:51:26,395 INFO L87 Difference]: Start difference. First operand 258 states and 337 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:26,548 INFO L93 Difference]: Finished difference Result 257 states and 335 transitions. [2021-08-27 05:51:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:51:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-08-27 05:51:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:26,550 INFO L225 Difference]: With dead ends: 257 [2021-08-27 05:51:26,550 INFO L226 Difference]: Without dead ends: 257 [2021-08-27 05:51:26,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:51:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-08-27 05:51:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2021-08-27 05:51:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 237 states have (on average 1.3966244725738397) internal successors, (331), 252 states have internal predecessors, (331), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 334 transitions. [2021-08-27 05:51:26,556 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 334 transitions. Word has length 41 [2021-08-27 05:51:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:26,556 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 334 transitions. [2021-08-27 05:51:26,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 334 transitions. [2021-08-27 05:51:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-27 05:51:26,557 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:26,557 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:26,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-27 05:51:26,558 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash -797753589, now seen corresponding path program 1 times [2021-08-27 05:51:26,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:26,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600011469] [2021-08-27 05:51:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:26,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:26,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:26,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600011469] [2021-08-27 05:51:26,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600011469] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:26,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51682103] [2021-08-27 05:51:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:26,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:26,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:26,851 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:26,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 05:51:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:27,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-27 05:51:27,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:27,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:27,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:27,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:27,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:51:27,678 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-08-27 05:51:27,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 130 treesize of output 84 [2021-08-27 05:51:27,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 85 treesize of output 75 [2021-08-27 05:51:27,693 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-08-27 05:51:27,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 59 [2021-08-27 05:51:27,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 26 [2021-08-27 05:51:27,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2021-08-27 05:51:27,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-08-27 05:51:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:27,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51682103] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:27,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:27,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 20 [2021-08-27 05:51:27,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954434896] [2021-08-27 05:51:27,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 05:51:27,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 05:51:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-08-27 05:51:27,881 INFO L87 Difference]: Start difference. First operand 256 states and 334 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:28,533 INFO L93 Difference]: Finished difference Result 262 states and 309 transitions. [2021-08-27 05:51:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 05:51:28,533 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-08-27 05:51:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:28,534 INFO L225 Difference]: With dead ends: 262 [2021-08-27 05:51:28,534 INFO L226 Difference]: Without dead ends: 262 [2021-08-27 05:51:28,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 426.6ms TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2021-08-27 05:51:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-08-27 05:51:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2021-08-27 05:51:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 204 states have (on average 1.3137254901960784) internal successors, (268), 219 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 271 transitions. [2021-08-27 05:51:28,539 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 271 transitions. Word has length 42 [2021-08-27 05:51:28,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:28,539 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 271 transitions. [2021-08-27 05:51:28,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:28,540 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 271 transitions. [2021-08-27 05:51:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-27 05:51:28,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:28,541 INFO L512 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:28,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:28,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-27 05:51:28,749 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr33REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1466980265, now seen corresponding path program 1 times [2021-08-27 05:51:28,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:28,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905595931] [2021-08-27 05:51:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:28,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:28,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:51:28,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:28,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905595931] [2021-08-27 05:51:28,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905595931] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:28,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986069482] [2021-08-27 05:51:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:28,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:28,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:28,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:28,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 05:51:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 05:51:29,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:29,695 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:51:29,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:29,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:51:29,968 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:51:29,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 39 [2021-08-27 05:51:30,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:51:30,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 31 [2021-08-27 05:51:30,548 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-08-27 05:51:30,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 21 [2021-08-27 05:51:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:30,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986069482] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:30,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:30,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2021-08-27 05:51:30,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630366913] [2021-08-27 05:51:30,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 05:51:30,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 05:51:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2021-08-27 05:51:30,589 INFO L87 Difference]: Start difference. First operand 223 states and 271 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:32,902 INFO L93 Difference]: Finished difference Result 337 states and 385 transitions. [2021-08-27 05:51:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-27 05:51:32,903 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-08-27 05:51:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:32,904 INFO L225 Difference]: With dead ends: 337 [2021-08-27 05:51:32,904 INFO L226 Difference]: Without dead ends: 337 [2021-08-27 05:51:32,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1441.7ms TimeCoverageRelationStatistics Valid=591, Invalid=3069, Unknown=0, NotChecked=0, Total=3660 [2021-08-27 05:51:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-08-27 05:51:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 231. [2021-08-27 05:51:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 212 states have (on average 1.3018867924528301) internal successors, (276), 227 states have internal predecessors, (276), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 279 transitions. [2021-08-27 05:51:32,912 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 279 transitions. Word has length 42 [2021-08-27 05:51:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:32,913 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 279 transitions. [2021-08-27 05:51:32,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 279 transitions. [2021-08-27 05:51:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-27 05:51:32,914 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:32,914 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:32,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:33,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-27 05:51:33,141 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:33,141 INFO L82 PathProgramCache]: Analyzing trace with hash -961030053, now seen corresponding path program 2 times [2021-08-27 05:51:33,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:33,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113757100] [2021-08-27 05:51:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:33,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:33,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:33,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113757100] [2021-08-27 05:51:33,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113757100] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:33,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198440598] [2021-08-27 05:51:33,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:51:33,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:33,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:33,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:33,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 05:51:34,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:51:34,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:51:34,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-27 05:51:34,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:34,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 05:51:34,348 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:34,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:34,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 11 [2021-08-27 05:51:34,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:51:34,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2021-08-27 05:51:34,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:51:34,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-08-27 05:51:34,716 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:51:34,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 05:51:34,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-27 05:51:34,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:34,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-27 05:51:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-08-27 05:51:35,046 INFO L354 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2021-08-27 05:51:35,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44 [2021-08-27 05:51:35,269 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:51:35,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-08-27 05:51:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:35,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198440598] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:35,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:35,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2021-08-27 05:51:35,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193883229] [2021-08-27 05:51:35,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 05:51:35,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:35,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 05:51:35,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-08-27 05:51:35,277 INFO L87 Difference]: Start difference. First operand 231 states and 279 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:36,357 INFO L93 Difference]: Finished difference Result 438 states and 523 transitions. [2021-08-27 05:51:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-27 05:51:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-08-27 05:51:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:36,365 INFO L225 Difference]: With dead ends: 438 [2021-08-27 05:51:36,366 INFO L226 Difference]: Without dead ends: 438 [2021-08-27 05:51:36,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 868.6ms TimeCoverageRelationStatistics Valid=398, Invalid=1954, Unknown=0, NotChecked=0, Total=2352 [2021-08-27 05:51:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-08-27 05:51:36,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 277. [2021-08-27 05:51:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 258 states have (on average 1.2868217054263567) internal successors, (332), 273 states have internal predecessors, (332), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 335 transitions. [2021-08-27 05:51:36,373 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 335 transitions. Word has length 47 [2021-08-27 05:51:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:36,373 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 335 transitions. [2021-08-27 05:51:36,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 335 transitions. [2021-08-27 05:51:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-27 05:51:36,374 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:36,375 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:36,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:36,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-27 05:51:36,593 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash -667307151, now seen corresponding path program 1 times [2021-08-27 05:51:36,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:36,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594747810] [2021-08-27 05:51:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:36,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:36,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:36,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594747810] [2021-08-27 05:51:36,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594747810] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:36,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831701108] [2021-08-27 05:51:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:36,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:36,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:36,906 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:36,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 05:51:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:37,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-27 05:51:37,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:37,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 05:51:37,760 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:51:37,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:37,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 11 [2021-08-27 05:51:37,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:51:37,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-08-27 05:51:38,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:51:38,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-08-27 05:51:38,198 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-08-27 05:51:38,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:51:38,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-08-27 05:51:38,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:38,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-27 05:51:38,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 23 [2021-08-27 05:51:38,539 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-08-27 05:51:38,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-08-27 05:51:38,936 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-27 05:51:38,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-08-27 05:51:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:38,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831701108] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:38,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:38,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2021-08-27 05:51:38,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367325485] [2021-08-27 05:51:38,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 05:51:38,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 05:51:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2021-08-27 05:51:38,944 INFO L87 Difference]: Start difference. First operand 277 states and 335 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:51:56,731 INFO L93 Difference]: Finished difference Result 583 states and 695 transitions. [2021-08-27 05:51:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-27 05:51:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-08-27 05:51:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:51:56,737 INFO L225 Difference]: With dead ends: 583 [2021-08-27 05:51:56,737 INFO L226 Difference]: Without dead ends: 583 [2021-08-27 05:51:56,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1296.1ms TimeCoverageRelationStatistics Valid=684, Invalid=3348, Unknown=0, NotChecked=0, Total=4032 [2021-08-27 05:51:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-08-27 05:51:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 281. [2021-08-27 05:51:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 262 states have (on average 1.2786259541984732) internal successors, (335), 277 states have internal predecessors, (335), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 338 transitions. [2021-08-27 05:51:56,745 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 338 transitions. Word has length 47 [2021-08-27 05:51:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:51:56,746 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 338 transitions. [2021-08-27 05:51:56,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 31 states have internal predecessors, (85), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:51:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 338 transitions. [2021-08-27 05:51:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-27 05:51:56,746 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:51:56,748 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:51:56,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-27 05:51:56,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-27 05:51:56,973 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:51:56,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:51:56,973 INFO L82 PathProgramCache]: Analyzing trace with hash -667614981, now seen corresponding path program 1 times [2021-08-27 05:51:56,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:51:56,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442013572] [2021-08-27 05:51:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:56,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:51:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:51:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:57,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:51:57,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442013572] [2021-08-27 05:51:57,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442013572] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:57,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154352303] [2021-08-27 05:51:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:51:57,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:51:57,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:51:57,351 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:51:57,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 05:51:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:51:58,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-27 05:51:58,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:51:58,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:58,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:51:58,329 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:51:58,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:51:58,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:51:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-08-27 05:51:58,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-08-27 05:51:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-08-27 05:51:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-08-27 05:51:58,832 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-08-27 05:51:58,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:51:58,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:58,916 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 05:51:58,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-08-27 05:51:58,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-08-27 05:51:58,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 23 [2021-08-27 05:51:59,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:51:59,229 INFO L354 Elim1Store]: treesize reduction 104, result has 18.8 percent of original size [2021-08-27 05:51:59,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-08-27 05:51:59,547 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-08-27 05:51:59,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 34 [2021-08-27 05:51:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:51:59,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154352303] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:51:59,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:51:59,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2021-08-27 05:51:59,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676693820] [2021-08-27 05:51:59,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-27 05:51:59,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:51:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-27 05:51:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 05:51:59,580 INFO L87 Difference]: Start difference. First operand 281 states and 338 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 36 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:10,290 INFO L93 Difference]: Finished difference Result 542 states and 644 transitions. [2021-08-27 05:52:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-27 05:52:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 36 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-08-27 05:52:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:10,292 INFO L225 Difference]: With dead ends: 542 [2021-08-27 05:52:10,292 INFO L226 Difference]: Without dead ends: 542 [2021-08-27 05:52:10,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 1809.6ms TimeCoverageRelationStatistics Valid=765, Invalid=3791, Unknown=0, NotChecked=0, Total=4556 [2021-08-27 05:52:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-08-27 05:52:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 275. [2021-08-27 05:52:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 256 states have (on average 1.26171875) internal successors, (323), 271 states have internal predecessors, (323), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 326 transitions. [2021-08-27 05:52:10,299 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 326 transitions. Word has length 47 [2021-08-27 05:52:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 326 transitions. [2021-08-27 05:52:10,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 36 states have internal predecessors, (84), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 326 transitions. [2021-08-27 05:52:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-27 05:52:10,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:10,301 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:10,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:10,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:10,517 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash -131914094, now seen corresponding path program 2 times [2021-08-27 05:52:10,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:10,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664786420] [2021-08-27 05:52:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:10,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:10,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:10,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664786420] [2021-08-27 05:52:10,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664786420] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:10,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220592289] [2021-08-27 05:52:10,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:52:10,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:10,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:10,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 05:52:11,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:52:11,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:52:11,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-27 05:52:11,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:11,904 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:11,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:11,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:52:12,079 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-08-27 05:52:12,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 17 [2021-08-27 05:52:12,137 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:12,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 17 [2021-08-27 05:52:12,161 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:12,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:12,212 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:12,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-08-27 05:52:12,421 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-08-27 05:52:12,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 59 [2021-08-27 05:52:12,644 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-08-27 05:52:12,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 25 [2021-08-27 05:52:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:12,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220592289] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:12,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:12,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-08-27 05:52:12,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234569686] [2021-08-27 05:52:12,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 05:52:12,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 05:52:12,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2021-08-27 05:52:12,653 INFO L87 Difference]: Start difference. First operand 275 states and 326 transitions. Second operand has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:14,091 INFO L93 Difference]: Finished difference Result 352 states and 411 transitions. [2021-08-27 05:52:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 05:52:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-08-27 05:52:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:14,093 INFO L225 Difference]: With dead ends: 352 [2021-08-27 05:52:14,093 INFO L226 Difference]: Without dead ends: 352 [2021-08-27 05:52:14,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 960.9ms TimeCoverageRelationStatistics Valid=390, Invalid=1962, Unknown=0, NotChecked=0, Total=2352 [2021-08-27 05:52:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-08-27 05:52:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 275. [2021-08-27 05:52:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 256 states have (on average 1.2578125) internal successors, (322), 271 states have internal predecessors, (322), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 325 transitions. [2021-08-27 05:52:14,123 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 325 transitions. Word has length 49 [2021-08-27 05:52:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:14,123 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 325 transitions. [2021-08-27 05:52:14,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 325 transitions. [2021-08-27 05:52:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-27 05:52:14,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:14,124 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:14,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:14,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-27 05:52:14,337 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash -131914093, now seen corresponding path program 2 times [2021-08-27 05:52:14,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:14,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778935380] [2021-08-27 05:52:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:14,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:14,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:14,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778935380] [2021-08-27 05:52:14,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778935380] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:14,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995864576] [2021-08-27 05:52:14,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:52:14,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:14,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:14,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 05:52:15,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:52:15,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:52:15,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-27 05:52:15,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:15,898 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:15,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:15,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:15,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:52:16,261 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-08-27 05:52:16,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 57 [2021-08-27 05:52:16,275 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-08-27 05:52:16,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 32 [2021-08-27 05:52:16,433 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:16,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 47 [2021-08-27 05:52:16,444 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:16,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 38 [2021-08-27 05:52:16,518 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:16,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:16,608 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:16,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 64 [2021-08-27 05:52:16,619 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:16,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 45 [2021-08-27 05:52:17,163 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-08-27 05:52:17,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 94 [2021-08-27 05:52:17,174 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:17,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 80 [2021-08-27 05:52:17,486 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-08-27 05:52:17,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 58 treesize of output 43 [2021-08-27 05:52:17,493 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-08-27 05:52:17,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 28 [2021-08-27 05:52:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:17,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995864576] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:17,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:17,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2021-08-27 05:52:17,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652076821] [2021-08-27 05:52:17,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 05:52:17,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 05:52:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2021-08-27 05:52:17,509 INFO L87 Difference]: Start difference. First operand 275 states and 325 transitions. Second operand has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:19,259 INFO L93 Difference]: Finished difference Result 366 states and 421 transitions. [2021-08-27 05:52:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-27 05:52:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-08-27 05:52:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:19,261 INFO L225 Difference]: With dead ends: 366 [2021-08-27 05:52:19,261 INFO L226 Difference]: Without dead ends: 366 [2021-08-27 05:52:19,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1282.9ms TimeCoverageRelationStatistics Valid=334, Invalid=1922, Unknown=0, NotChecked=0, Total=2256 [2021-08-27 05:52:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-08-27 05:52:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 272. [2021-08-27 05:52:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 253 states have (on average 1.2371541501976284) internal successors, (313), 268 states have internal predecessors, (313), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 316 transitions. [2021-08-27 05:52:19,267 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 316 transitions. Word has length 49 [2021-08-27 05:52:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:19,267 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 316 transitions. [2021-08-27 05:52:19,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 316 transitions. [2021-08-27 05:52:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 05:52:19,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:19,268 INFO L512 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:19,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-27 05:52:19,485 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash -421529196, now seen corresponding path program 1 times [2021-08-27 05:52:19,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:19,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913019701] [2021-08-27 05:52:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:19,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:19,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:19,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913019701] [2021-08-27 05:52:19,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913019701] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:19,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679050963] [2021-08-27 05:52:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:19,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:19,821 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:19,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 05:52:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:20,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-27 05:52:20,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:21,021 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:21,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:21,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 05:52:21,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:52:21,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:21,303 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:21,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 103 treesize of output 63 [2021-08-27 05:52:21,313 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-08-27 05:52:21,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 40 [2021-08-27 05:52:21,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:52:21,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 55 treesize of output 49 [2021-08-27 05:52:21,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:52:21,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 46 [2021-08-27 05:52:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 05:52:21,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679050963] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:21,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:21,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 29 [2021-08-27 05:52:21,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203961826] [2021-08-27 05:52:21,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-27 05:52:21,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:21,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-27 05:52:21,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-08-27 05:52:21,906 INFO L87 Difference]: Start difference. First operand 272 states and 316 transitions. Second operand has 30 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:23,317 INFO L93 Difference]: Finished difference Result 321 states and 363 transitions. [2021-08-27 05:52:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 05:52:23,317 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-08-27 05:52:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:23,318 INFO L225 Difference]: With dead ends: 321 [2021-08-27 05:52:23,318 INFO L226 Difference]: Without dead ends: 321 [2021-08-27 05:52:23,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 928.8ms TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 05:52:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-08-27 05:52:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 277. [2021-08-27 05:52:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 258 states have (on average 1.2325581395348837) internal successors, (318), 273 states have internal predecessors, (318), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 321 transitions. [2021-08-27 05:52:23,323 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 321 transitions. Word has length 50 [2021-08-27 05:52:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:23,323 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 321 transitions. [2021-08-27 05:52:23,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 321 transitions. [2021-08-27 05:52:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-27 05:52:23,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:23,325 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:23,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-08-27 05:52:23,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:23,552 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr44ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:23,553 INFO L82 PathProgramCache]: Analyzing trace with hash -438746489, now seen corresponding path program 2 times [2021-08-27 05:52:23,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:23,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008680260] [2021-08-27 05:52:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:23,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:23,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:23,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008680260] [2021-08-27 05:52:23,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008680260] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:23,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797728700] [2021-08-27 05:52:23,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:52:23,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:23,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:23,849 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:23,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 05:52:24,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:52:24,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:52:24,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-27 05:52:24,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:25,144 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:25,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 05:52:25,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 18 [2021-08-27 05:52:25,407 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-08-27 05:52:25,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 27 [2021-08-27 05:52:25,518 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:25,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 27 [2021-08-27 05:52:25,573 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:25,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:25,638 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:25,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-08-27 05:52:25,890 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-08-27 05:52:25,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 64 [2021-08-27 05:52:26,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:52:26,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 30 [2021-08-27 05:52:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:26,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797728700] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:26,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:26,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2021-08-27 05:52:26,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250580026] [2021-08-27 05:52:26,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-27 05:52:26,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-27 05:52:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2021-08-27 05:52:26,175 INFO L87 Difference]: Start difference. First operand 277 states and 321 transitions. Second operand has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:29,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:29,067 INFO L93 Difference]: Finished difference Result 487 states and 550 transitions. [2021-08-27 05:52:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-27 05:52:29,068 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-08-27 05:52:29,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:29,069 INFO L225 Difference]: With dead ends: 487 [2021-08-27 05:52:29,070 INFO L226 Difference]: Without dead ends: 485 [2021-08-27 05:52:29,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 2228.9ms TimeCoverageRelationStatistics Valid=932, Invalid=5874, Unknown=0, NotChecked=0, Total=6806 [2021-08-27 05:52:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-08-27 05:52:29,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 300. [2021-08-27 05:52:29,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 281 states have (on average 1.2597864768683273) internal successors, (354), 296 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 357 transitions. [2021-08-27 05:52:29,077 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 357 transitions. Word has length 52 [2021-08-27 05:52:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:29,077 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 357 transitions. [2021-08-27 05:52:29,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 357 transitions. [2021-08-27 05:52:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 05:52:29,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:29,079 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:29,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-27 05:52:29,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:29,305 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr41ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash 708201269, now seen corresponding path program 1 times [2021-08-27 05:52:29,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:29,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247296909] [2021-08-27 05:52:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:29,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:29,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:29,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247296909] [2021-08-27 05:52:29,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247296909] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:29,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031619000] [2021-08-27 05:52:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:29,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:29,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:29,521 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:29,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-27 05:52:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 05:52:30,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:30,810 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:30,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:30,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 17 [2021-08-27 05:52:31,022 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:31,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 37 [2021-08-27 05:52:31,375 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:52:31,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 29 [2021-08-27 05:52:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 05:52:31,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031619000] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:31,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:31,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2021-08-27 05:52:31,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465088653] [2021-08-27 05:52:31,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 05:52:31,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 05:52:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2021-08-27 05:52:31,527 INFO L87 Difference]: Start difference. First operand 300 states and 357 transitions. Second operand has 27 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:32,931 INFO L93 Difference]: Finished difference Result 353 states and 409 transitions. [2021-08-27 05:52:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-27 05:52:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-08-27 05:52:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:32,933 INFO L225 Difference]: With dead ends: 353 [2021-08-27 05:52:32,933 INFO L226 Difference]: Without dead ends: 353 [2021-08-27 05:52:32,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1032.0ms TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2021-08-27 05:52:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-08-27 05:52:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 298. [2021-08-27 05:52:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 279 states have (on average 1.2616487455197132) internal successors, (352), 294 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 355 transitions. [2021-08-27 05:52:32,938 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 355 transitions. Word has length 53 [2021-08-27 05:52:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:32,938 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 355 transitions. [2021-08-27 05:52:32,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 355 transitions. [2021-08-27 05:52:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:52:32,940 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:32,940 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:32,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:33,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:33,153 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash -562890213, now seen corresponding path program 2 times [2021-08-27 05:52:33,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:33,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093159014] [2021-08-27 05:52:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:33,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:33,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:33,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093159014] [2021-08-27 05:52:33,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093159014] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:33,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756805000] [2021-08-27 05:52:33,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:52:33,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:33,759 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:33,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-27 05:52:34,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:52:34,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:52:34,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 56 conjunts are in the unsatisfiable core [2021-08-27 05:52:34,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:35,136 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:52:35,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:35,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:52:35,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 13 [2021-08-27 05:52:35,534 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-08-27 05:52:35,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2021-08-27 05:52:35,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:35,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:35,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 20 [2021-08-27 05:52:35,764 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-27 05:52:35,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2021-08-27 05:52:35,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:35,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 20 [2021-08-27 05:52:35,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:35,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 21 [2021-08-27 05:52:35,883 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-08-27 05:52:35,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:52:35,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-08-27 05:52:35,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:35,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:35,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:35,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-08-27 05:52:36,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 23 [2021-08-27 05:52:36,335 INFO L354 Elim1Store]: treesize reduction 76, result has 18.3 percent of original size [2021-08-27 05:52:36,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 102 [2021-08-27 05:52:36,346 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-08-27 05:52:36,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 105 [2021-08-27 05:52:36,365 INFO L354 Elim1Store]: treesize reduction 128, result has 16.3 percent of original size [2021-08-27 05:52:36,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 98 [2021-08-27 05:52:36,733 INFO L354 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2021-08-27 05:52:36,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 67 [2021-08-27 05:52:36,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 49 [2021-08-27 05:52:36,999 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-08-27 05:52:37,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 33 [2021-08-27 05:52:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:37,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756805000] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:37,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:37,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 43 [2021-08-27 05:52:37,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119453305] [2021-08-27 05:52:37,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-27 05:52:37,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-27 05:52:37,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1590, Unknown=2, NotChecked=0, Total=1806 [2021-08-27 05:52:37,052 INFO L87 Difference]: Start difference. First operand 298 states and 355 transitions. Second operand has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 42 states have internal predecessors, (100), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:38,828 INFO L93 Difference]: Finished difference Result 455 states and 532 transitions. [2021-08-27 05:52:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 05:52:38,828 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 42 states have internal predecessors, (100), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-08-27 05:52:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:38,830 INFO L225 Difference]: With dead ends: 455 [2021-08-27 05:52:38,830 INFO L226 Difference]: Without dead ends: 455 [2021-08-27 05:52:38,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1585.8ms TimeCoverageRelationStatistics Valid=394, Invalid=2684, Unknown=2, NotChecked=0, Total=3080 [2021-08-27 05:52:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-08-27 05:52:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 336. [2021-08-27 05:52:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 317 states have (on average 1.249211356466877) internal successors, (396), 332 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 399 transitions. [2021-08-27 05:52:38,836 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 399 transitions. Word has length 55 [2021-08-27 05:52:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:38,836 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 399 transitions. [2021-08-27 05:52:38,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 42 states have internal predecessors, (100), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 399 transitions. [2021-08-27 05:52:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:52:38,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:38,838 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:38,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:39,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-27 05:52:39,053 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash -563198043, now seen corresponding path program 1 times [2021-08-27 05:52:39,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:39,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163897202] [2021-08-27 05:52:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:39,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:39,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:39,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163897202] [2021-08-27 05:52:39,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163897202] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:39,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6908170] [2021-08-27 05:52:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:39,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:39,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:39,512 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:39,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-27 05:52:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:40,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 56 conjunts are in the unsatisfiable core [2021-08-27 05:52:40,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:40,982 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:52:40,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:41,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:52:41,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 13 [2021-08-27 05:52:41,290 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-08-27 05:52:41,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 20 [2021-08-27 05:52:41,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:41,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 14 [2021-08-27 05:52:41,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 05:52:41,459 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-27 05:52:41,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2021-08-27 05:52:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:41,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 20 [2021-08-27 05:52:41,543 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-08-27 05:52:41,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:52:41,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-08-27 05:52:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:41,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 11 [2021-08-27 05:52:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:41,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:41,908 INFO L354 Elim1Store]: treesize reduction 92, result has 18.6 percent of original size [2021-08-27 05:52:41,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 223 treesize of output 97 [2021-08-27 05:52:41,918 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-08-27 05:52:41,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 166 treesize of output 122 [2021-08-27 05:52:41,928 INFO L354 Elim1Store]: treesize reduction 77, result has 16.3 percent of original size [2021-08-27 05:52:41,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 94 [2021-08-27 05:52:42,194 INFO L354 Elim1Store]: treesize reduction 14, result has 22.2 percent of original size [2021-08-27 05:52:42,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 58 [2021-08-27 05:52:42,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 36 [2021-08-27 05:52:42,364 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:52:42,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 20 [2021-08-27 05:52:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6908170] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:42,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:42,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 37 [2021-08-27 05:52:42,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305050806] [2021-08-27 05:52:42,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-27 05:52:42,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-27 05:52:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 05:52:42,372 INFO L87 Difference]: Start difference. First operand 336 states and 399 transitions. Second operand has 37 states, 37 states have (on average 2.72972972972973) internal successors, (101), 36 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:44,088 INFO L93 Difference]: Finished difference Result 483 states and 560 transitions. [2021-08-27 05:52:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 05:52:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.72972972972973) internal successors, (101), 36 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-08-27 05:52:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:44,089 INFO L225 Difference]: With dead ends: 483 [2021-08-27 05:52:44,090 INFO L226 Difference]: Without dead ends: 483 [2021-08-27 05:52:44,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1340.1ms TimeCoverageRelationStatistics Valid=403, Invalid=2459, Unknown=0, NotChecked=0, Total=2862 [2021-08-27 05:52:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-08-27 05:52:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 336. [2021-08-27 05:52:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 317 states have (on average 1.249211356466877) internal successors, (396), 332 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 399 transitions. [2021-08-27 05:52:44,095 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 399 transitions. Word has length 55 [2021-08-27 05:52:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:44,095 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 399 transitions. [2021-08-27 05:52:44,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.72972972972973) internal successors, (101), 36 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 399 transitions. [2021-08-27 05:52:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:52:44,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:44,097 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:44,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-27 05:52:44,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-08-27 05:52:44,305 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:44,305 INFO L82 PathProgramCache]: Analyzing trace with hash 105311611, now seen corresponding path program 1 times [2021-08-27 05:52:44,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:44,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795737240] [2021-08-27 05:52:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:44,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:44,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:44,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:44,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795737240] [2021-08-27 05:52:44,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795737240] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:44,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795581790] [2021-08-27 05:52:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:44,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:44,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:44,769 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:44,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-27 05:52:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:46,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 63 conjunts are in the unsatisfiable core [2021-08-27 05:52:46,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:46,359 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:52:46,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:46,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:46,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:52:46,662 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-08-27 05:52:46,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2021-08-27 05:52:46,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:46,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 20 [2021-08-27 05:52:46,791 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-27 05:52:46,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-08-27 05:52:46,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 05:52:46,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2021-08-27 05:52:46,876 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-08-27 05:52:46,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:52:46,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:52:46,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:46,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 11 [2021-08-27 05:52:46,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-08-27 05:52:47,316 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-08-27 05:52:47,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 303 treesize of output 156 [2021-08-27 05:52:47,351 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-08-27 05:52:47,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 218 treesize of output 141 [2021-08-27 05:52:47,368 INFO L354 Elim1Store]: treesize reduction 77, result has 16.3 percent of original size [2021-08-27 05:52:47,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 104 [2021-08-27 05:52:47,678 INFO L354 Elim1Store]: treesize reduction 14, result has 22.2 percent of original size [2021-08-27 05:52:47,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 60 [2021-08-27 05:52:47,683 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 05:52:47,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 37 [2021-08-27 05:52:47,803 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:47,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 14 [2021-08-27 05:52:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:47,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795581790] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:47,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:47,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 37 [2021-08-27 05:52:47,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416783400] [2021-08-27 05:52:47,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-27 05:52:47,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-27 05:52:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 05:52:47,810 INFO L87 Difference]: Start difference. First operand 336 states and 399 transitions. Second operand has 37 states, 37 states have (on average 2.72972972972973) internal successors, (101), 36 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:49,464 INFO L93 Difference]: Finished difference Result 485 states and 560 transitions. [2021-08-27 05:52:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 05:52:49,465 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.72972972972973) internal successors, (101), 36 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-08-27 05:52:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:49,466 INFO L225 Difference]: With dead ends: 485 [2021-08-27 05:52:49,466 INFO L226 Difference]: Without dead ends: 485 [2021-08-27 05:52:49,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1395.4ms TimeCoverageRelationStatistics Valid=403, Invalid=2459, Unknown=0, NotChecked=0, Total=2862 [2021-08-27 05:52:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-08-27 05:52:49,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 338. [2021-08-27 05:52:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 319 states have (on average 1.2476489028213167) internal successors, (398), 334 states have internal predecessors, (398), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 401 transitions. [2021-08-27 05:52:49,471 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 401 transitions. Word has length 55 [2021-08-27 05:52:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:49,471 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 401 transitions. [2021-08-27 05:52:49,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.72972972972973) internal successors, (101), 36 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 401 transitions. [2021-08-27 05:52:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:52:49,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:49,473 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:49,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:49,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:49,681 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash 105003781, now seen corresponding path program 1 times [2021-08-27 05:52:49,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:49,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830585009] [2021-08-27 05:52:49,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:49,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:50,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:50,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830585009] [2021-08-27 05:52:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830585009] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:50,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109322666] [2021-08-27 05:52:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:50,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:50,291 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:50,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-27 05:52:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:51,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 59 conjunts are in the unsatisfiable core [2021-08-27 05:52:51,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:52,069 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:52:52,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:52,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 05:52:52,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 13 [2021-08-27 05:52:52,394 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-08-27 05:52:52,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2021-08-27 05:52:52,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:52,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:52,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 20 [2021-08-27 05:52:52,665 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-27 05:52:52,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-08-27 05:52:52,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2021-08-27 05:52:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:52,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:52,769 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-08-27 05:52:52,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:52:52,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:52,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:52,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:52:52,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-08-27 05:52:52,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-08-27 05:52:52,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 23 [2021-08-27 05:52:53,192 INFO L354 Elim1Store]: treesize reduction 92, result has 18.6 percent of original size [2021-08-27 05:52:53,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 110 [2021-08-27 05:52:53,214 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-08-27 05:52:53,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 183 treesize of output 135 [2021-08-27 05:52:53,232 INFO L354 Elim1Store]: treesize reduction 176, result has 15.8 percent of original size [2021-08-27 05:52:53,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 114 [2021-08-27 05:52:53,539 INFO L354 Elim1Store]: treesize reduction 14, result has 22.2 percent of original size [2021-08-27 05:52:53,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 71 [2021-08-27 05:52:53,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 45 [2021-08-27 05:52:53,696 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-27 05:52:53,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 23 [2021-08-27 05:52:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:53,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109322666] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:53,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:53,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2021-08-27 05:52:53,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372317318] [2021-08-27 05:52:53,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-08-27 05:52:53,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:53,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-08-27 05:52:53,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 05:52:53,707 INFO L87 Difference]: Start difference. First operand 338 states and 401 transitions. Second operand has 40 states, 40 states have (on average 2.475) internal successors, (99), 39 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:52:55,521 INFO L93 Difference]: Finished difference Result 451 states and 525 transitions. [2021-08-27 05:52:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 05:52:55,522 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.475) internal successors, (99), 39 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-08-27 05:52:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:52:55,523 INFO L225 Difference]: With dead ends: 451 [2021-08-27 05:52:55,523 INFO L226 Difference]: Without dead ends: 451 [2021-08-27 05:52:55,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 1542.0ms TimeCoverageRelationStatistics Valid=371, Invalid=2385, Unknown=0, NotChecked=0, Total=2756 [2021-08-27 05:52:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-08-27 05:52:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 336. [2021-08-27 05:52:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 317 states have (on average 1.2429022082018928) internal successors, (394), 332 states have internal predecessors, (394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 397 transitions. [2021-08-27 05:52:55,527 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 397 transitions. Word has length 55 [2021-08-27 05:52:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:52:55,528 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 397 transitions. [2021-08-27 05:52:55,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.475) internal successors, (99), 39 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:52:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 397 transitions. [2021-08-27 05:52:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:52:55,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:52:55,529 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:52:55,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-27 05:52:55,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:55,757 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr33REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:52:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:52:55,757 INFO L82 PathProgramCache]: Analyzing trace with hash -566843399, now seen corresponding path program 1 times [2021-08-27 05:52:55,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:52:55,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947446516] [2021-08-27 05:52:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:55,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:52:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:52:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:52:56,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:52:56,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947446516] [2021-08-27 05:52:56,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947446516] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:56,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199985877] [2021-08-27 05:52:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:52:56,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:52:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:52:56,032 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:52:56,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-27 05:52:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:52:57,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 44 conjunts are in the unsatisfiable core [2021-08-27 05:52:57,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:52:57,860 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:57,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:57,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-08-27 05:52:58,081 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-08-27 05:52:58,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 23 [2021-08-27 05:52:58,190 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:58,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 23 [2021-08-27 05:52:58,240 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:52:58,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 05:52:58,300 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:52:58,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 36 [2021-08-27 05:52:58,564 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-08-27 05:52:58,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 65 [2021-08-27 05:52:58,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:52:58,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 31 [2021-08-27 05:52:59,012 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:52:59,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-08-27 05:52:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:52:59,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199985877] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:52:59,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:52:59,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2021-08-27 05:52:59,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811253549] [2021-08-27 05:52:59,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-27 05:52:59,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:52:59,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-27 05:52:59,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 05:52:59,051 INFO L87 Difference]: Start difference. First operand 336 states and 397 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:03,122 INFO L93 Difference]: Finished difference Result 539 states and 614 transitions. [2021-08-27 05:53:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-27 05:53:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-08-27 05:53:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:03,124 INFO L225 Difference]: With dead ends: 539 [2021-08-27 05:53:03,124 INFO L226 Difference]: Without dead ends: 539 [2021-08-27 05:53:03,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 2760.1ms TimeCoverageRelationStatistics Valid=1083, Invalid=6927, Unknown=0, NotChecked=0, Total=8010 [2021-08-27 05:53:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-08-27 05:53:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 366. [2021-08-27 05:53:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 347 states have (on average 1.2593659942363113) internal successors, (437), 362 states have internal predecessors, (437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 440 transitions. [2021-08-27 05:53:03,130 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 440 transitions. Word has length 55 [2021-08-27 05:53:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:03,130 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 440 transitions. [2021-08-27 05:53:03,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 440 transitions. [2021-08-27 05:53:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 05:53:03,131 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:03,132 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:03,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-27 05:53:03,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-27 05:53:03,345 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr44ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:53:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:03,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1144862377, now seen corresponding path program 1 times [2021-08-27 05:53:03,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:03,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824103228] [2021-08-27 05:53:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:03,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:03,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:03,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824103228] [2021-08-27 05:53:03,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824103228] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:53:03,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833758249] [2021-08-27 05:53:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:03,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:53:03,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:53:03,713 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:53:03,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-27 05:53:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:05,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-27 05:53:05,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:53:05,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 27 [2021-08-27 05:53:05,951 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-08-27 05:53:05,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 69 treesize of output 47 [2021-08-27 05:53:06,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:53:06,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 39 [2021-08-27 05:53:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 05:53:06,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833758249] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 05:53:06,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:53:06,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-08-27 05:53:06,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449420774] [2021-08-27 05:53:06,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-27 05:53:06,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-27 05:53:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2021-08-27 05:53:06,742 INFO L87 Difference]: Start difference. First operand 366 states and 440 transitions. Second operand has 31 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:08,068 INFO L93 Difference]: Finished difference Result 391 states and 465 transitions. [2021-08-27 05:53:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 05:53:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-08-27 05:53:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:08,069 INFO L225 Difference]: With dead ends: 391 [2021-08-27 05:53:08,070 INFO L226 Difference]: Without dead ends: 386 [2021-08-27 05:53:08,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1041.0ms TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 05:53:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-08-27 05:53:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 362. [2021-08-27 05:53:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 343 states have (on average 1.2594752186588922) internal successors, (432), 358 states have internal predecessors, (432), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 435 transitions. [2021-08-27 05:53:08,075 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 435 transitions. Word has length 56 [2021-08-27 05:53:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:08,075 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 435 transitions. [2021-08-27 05:53:08,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 435 transitions. [2021-08-27 05:53:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-27 05:53:08,076 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:08,077 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:08,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-27 05:53:08,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-27 05:53:08,297 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr33REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 40 more)] === [2021-08-27 05:53:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1802178581, now seen corresponding path program 1 times [2021-08-27 05:53:08,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:08,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630766422] [2021-08-27 05:53:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:08,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:53:08,320 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:53:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:53:08,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 05:53:08,371 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:53:08,372 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr33REQUIRES_VIOLATION [2021-08-27 05:53:08,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:53:08,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:53:08,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:53:08,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:53:08,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:53:08,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:53:08,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:53:08,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:53:08,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 05:53:08,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 05:53:08,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-08-27 05:53:08,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-08-27 05:53:08,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-08-27 05:53:08,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-08-27 05:53:08,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-08-27 05:53:08,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:08,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 05:53:08,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:53:08,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-27 05:53:08,386 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:53:08,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:53:08 BoogieIcfgContainer [2021-08-27 05:53:08,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:53:08,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:53:08,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:53:08,423 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:53:08,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:51:01" (3/4) ... [2021-08-27 05:53:08,426 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 05:53:08,482 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 05:53:08,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:53:08,486 INFO L168 Benchmark]: Toolchain (without parser) took 127900.29 ms. Allocated memory was 54.5 MB in the beginning and 960.5 MB in the end (delta: 906.0 MB). Free memory was 32.1 MB in the beginning and 632.9 MB in the end (delta: -600.8 MB). Peak memory consumption was 305.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:08,488 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory is still 36.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:53:08,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.29 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.9 MB in the beginning and 48.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:08,489 INFO L168 Benchmark]: Boogie Preprocessor took 60.76 ms. Allocated memory is still 71.3 MB. Free memory was 48.1 MB in the beginning and 45.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:08,489 INFO L168 Benchmark]: RCFGBuilder took 719.31 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 45.1 MB in the end (delta: 235.6 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:08,489 INFO L168 Benchmark]: TraceAbstraction took 126610.19 ms. Allocated memory was 71.3 MB in the beginning and 960.5 MB in the end (delta: 889.2 MB). Free memory was 44.7 MB in the beginning and 636.1 MB in the end (delta: -591.4 MB). Peak memory consumption was 296.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:08,489 INFO L168 Benchmark]: Witness Printer took 59.56 ms. Allocated memory is still 960.5 MB. Free memory was 636.1 MB in the beginning and 632.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:08,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory is still 36.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 443.29 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.9 MB in the beginning and 48.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.76 ms. Allocated memory is still 71.3 MB. Free memory was 48.1 MB in the beginning and 45.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 719.31 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 45.1 MB in the end (delta: 235.6 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 126610.19 ms. Allocated memory was 71.3 MB in the beginning and 960.5 MB in the end (delta: 889.2 MB). Free memory was 44.7 MB in the beginning and 636.1 MB in the end (delta: -591.4 MB). Peak memory consumption was 296.8 MB. Max. memory is 16.1 GB. * Witness Printer took 59.56 ms. Allocated memory is still 960.5 MB. Free memory was 636.1 MB in the beginning and 632.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 610]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L567] List p, a, t; [L568] a = (List) malloc(sizeof(struct node)) [L569] COND FALSE !(a == 0) VAL [a={1:0}] [L570] a->n = 0 VAL [a={1:0}] [L571] p = a [L572] int i = 0; VAL [a={1:0}, i=0, p={1:0}] [L573] i < 20 && __VERIFIER_nondet_int() [L573] i < 20 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, a={1:0}, i=0, i < 20 && __VERIFIER_nondet_int()=1, p={1:0}] [L573] COND TRUE i < 20 && __VERIFIER_nondet_int() [L574] i++ [L575] p->flag = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, a={1:0}, i=1, p={1:0}] [L576] p->flag VAL [a={1:0}, i=1, p={1:0}, p->flag=-1] [L576] COND TRUE p->flag [L577] p->h = 1 VAL [a={1:0}, i=1, p={1:0}] [L581] t = (List) malloc(sizeof(struct node)) [L582] COND FALSE !(t == 0) VAL [a={1:0}, i=1, p={1:0}, t={-2:0}] [L583] p->n = t VAL [a={1:0}, i=1, p={1:0}, t={-2:0}] [L584] EXPR p->n VAL [a={1:0}, i=1, p={1:0}, p->n={-2:0}, t={-2:0}] [L584] p = p->n [L573] i < 20 && __VERIFIER_nondet_int() [L573] i < 20 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={1:0}, i=1, i < 20 && __VERIFIER_nondet_int()=0, p={-2:0}, t={-2:0}] [L573] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) [L586] p->h = 3 VAL [a={1:0}, i=1, p={-2:0}, t={-2:0}] [L587] p = a VAL [a={1:0}, i=1, p={1:0}, t={-2:0}] [L588] EXPR p->h VAL [a={1:0}, i=1, p={1:0}, p->h=1, t={-2:0}] [L588] COND TRUE p->h != 3 [L589] p->flag VAL [a={1:0}, i=1, p={1:0}, p->flag=-1, t={-2:0}] [L589] COND TRUE p->flag [L590] EXPR p->h VAL [a={1:0}, i=1, p={1:0}, p->h=1, t={-2:0}] [L590] COND FALSE !(p->h != 1) [L596] EXPR p->n VAL [a={1:0}, i=1, p={1:0}, p->n={-2:0}, t={-2:0}] [L596] p = p->n [L597] i++ VAL [a={1:0}, i=2, p={-2:0}, t={-2:0}] [L588] EXPR p->h VAL [a={1:0}, i=2, p={-2:0}, p->h=3, t={-2:0}] [L588] COND FALSE !(p->h != 3) [L599] EXPR p->h VAL [a={1:0}, i=2, p={-2:0}, p->h=3, t={-2:0}] [L599] COND FALSE !(p->h != 3 || i > 20) [L601] p = a VAL [a={1:0}, i=2, p={1:0}, t={-2:0}] [L602] COND FALSE !(p == 0) VAL [a={1:0}, i=2, p={1:0}, t={-2:0}] [L605] EXPR p->n VAL [a={1:0}, i=2, p={1:0}, p->n={-2:0}, t={-2:0}] [L605] COND FALSE !(p->n == 0) [L610] EXPR p->n VAL [a={1:0}, i=2, p={1:0}, p->n={-2:0}, t={-2:0}] [L610] COND TRUE p->n != 0 [L611] EXPR p->n VAL [a={1:0}, i=2, p={1:0}, p->n={-2:0}, t={-2:0}] [L611] t = p->n [L612] free(p) VAL [a={1:0}, i=2, p={1:0}, t={-2:0}] [L612] free(p) VAL [a={1:0}, i=2, p={1:0}, t={-2:0}] [L612] free(p) [L613] p = t VAL [a={1:0}, i=2, p={-2:0}, t={-2:0}] [L610] EXPR p->n VAL [a={1:0}, i=2, p={-2:0}, p->n={58:60}, t={-2:0}] [L610] COND TRUE p->n != 0 [L611] EXPR p->n VAL [a={1:0}, i=2, p={-2:0}, p->n={58:60}, t={-2:0}] [L611] t = p->n [L612] free(p) VAL [a={1:0}, i=2, p={-2:0}, t={58:60}] [L612] free(p) VAL [a={1:0}, i=2, p={-2:0}, t={58:60}] [L612] free(p) [L613] p = t VAL [a={1:0}, i=2, p={58:60}, t={58:60}] [L610] p->n - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 615]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 615]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 615]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 119 locations, 45 error locations. Started 1 CEGAR loops. OverallTime: 126514.6ms, OverallIterations: 39, TraceHistogramMax: 3, EmptinessCheckTime: 41.6ms, AutomataDifference: 64391.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2731 SDtfs, 14574 SDslu, 22807 SDs, 0 SdLazy, 37663 SolverSat, 2704 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 43399.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2140 GetRequests, 885 SyntacticMatches, 33 SemanticMatches, 1222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16546 ImplicationChecksByTransitivity, 27404.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=37, InterpolantAutomatonStates: 775, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 233.8ms AutomataMinimizationTime, 38 MinimizatonAttempts, 3369 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 335.0ms SsaConstructionTime, 1256.2ms SatisfiabilityAnalysisTime, 35652.0ms InterpolantComputationTime, 2598 NumberOfCodeBlocks, 2598 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 2478 ConstructedInterpolants, 321 QuantifiedInterpolants, 43696 SizeOfPredicates, 336 NumberOfNonLiveVariables, 6024 ConjunctsInSsa, 897 ConjunctsInUnsatCore, 63 InterpolantComputations, 13 PerfectInterpolantSequences, 34/591 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-27 05:53:08,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...