./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 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/test-0158_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa779df617b83bdc7632b93a3c3bc0bbfee71559 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 10:07:31,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 10:07:31,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 10:07:31,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 10:07:31,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 10:07:31,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 10:07:31,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 10:07:31,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 10:07:31,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 10:07:31,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 10:07:31,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 10:07:31,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 10:07:31,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 10:07:31,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 10:07:31,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 10:07:31,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 10:07:31,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 10:07:31,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 10:07:31,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 10:07:31,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 10:07:31,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 10:07:31,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 10:07:31,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 10:07:31,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 10:07:31,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 10:07:31,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 10:07:31,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 10:07:31,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 10:07:31,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 10:07:31,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 10:07:31,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 10:07:31,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 10:07:31,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 10:07:31,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 10:07:31,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 10:07:31,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 10:07:31,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 10:07:31,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 10:07:31,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 10:07:31,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 10:07:31,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 10:07:31,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 10:07:31,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 10:07:31,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 10:07:31,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 10:07:31,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 10:07:31,523 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 10:07:31,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 10:07:31,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 10:07:31,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 10:07:31,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 10:07:31,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 10:07:31,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 10:07:31,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 10:07:31,524 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 10:07:31,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 10:07:31,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 10:07:31,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 10:07:31,525 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 10:07:31,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 10:07:31,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 10:07:31,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 10:07:31,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 10:07:31,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 10:07:31,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 10:07:31,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 10:07:31,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 10:07:31,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 10:07:31,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 10:07:31,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa779df617b83bdc7632b93a3c3bc0bbfee71559 [2021-07-06 10:07:31,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 10:07:31,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 10:07:31,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 10:07:31,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 10:07:31,788 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 10:07:31,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2021-07-06 10:07:31,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e740d3c80/921f07f55196463e8c37edac92947e89/FLAGd54fb0fc3 [2021-07-06 10:07:32,328 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 10:07:32,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2021-07-06 10:07:32,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e740d3c80/921f07f55196463e8c37edac92947e89/FLAGd54fb0fc3 [2021-07-06 10:07:32,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e740d3c80/921f07f55196463e8c37edac92947e89 [2021-07-06 10:07:32,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 10:07:32,703 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 10:07:32,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 10:07:32,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 10:07:32,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 10:07:32,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 10:07:32" (1/1) ... [2021-07-06 10:07:32,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30060f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:32, skipping insertion in model container [2021-07-06 10:07:32,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 10:07:32" (1/1) ... [2021-07-06 10:07:32,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 10:07:32,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 10:07:32,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 10:07:32,944 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 10:07:32,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 10:07:33,006 INFO L208 MainTranslator]: Completed translation [2021-07-06 10:07:33,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33 WrapperNode [2021-07-06 10:07:33,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 10:07:33,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 10:07:33,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 10:07:33,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 10:07:33,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 10:07:33,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 10:07:33,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 10:07:33,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 10:07:33,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (1/1) ... [2021-07-06 10:07:33,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 10:07:33,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 10:07:33,094 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) [2021-07-06 10:07:33,116 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 [2021-07-06 10:07:33,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 10:07:33,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 10:07:33,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-07-06 10:07:33,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-07-06 10:07:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-07-06 10:07:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-07-06 10:07:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-07-06 10:07:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-07-06 10:07:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 10:07:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-07-06 10:07:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-07-06 10:07:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-07-06 10:07:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-07-06 10:07:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-07-06 10:07:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-07-06 10:07:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-07-06 10:07:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-07-06 10:07:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-07-06 10:07:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-07-06 10:07:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-07-06 10:07:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-07-06 10:07:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-07-06 10:07:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-07-06 10:07:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-07-06 10:07:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-07-06 10:07:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-07-06 10:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-07-06 10:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-07-06 10:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-07-06 10:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-07-06 10:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-07-06 10:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-07-06 10:07:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-07-06 10:07:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-07-06 10:07:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-07-06 10:07:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-07-06 10:07:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-07-06 10:07:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-07-06 10:07:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-07-06 10:07:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-07-06 10:07:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-07-06 10:07:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-07-06 10:07:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-07-06 10:07:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-07-06 10:07:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-07-06 10:07:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-07-06 10:07:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-07-06 10:07:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-07-06 10:07:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-07-06 10:07:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-07-06 10:07:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-07-06 10:07:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-07-06 10:07:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-07-06 10:07:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-07-06 10:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-07-06 10:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-07-06 10:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-07-06 10:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-07-06 10:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-07-06 10:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-07-06 10:07:33,165 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-07-06 10:07:33,165 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-07-06 10:07:33,165 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 10:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 10:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-06 10:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 10:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 10:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-07-06 10:07:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 10:07:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 10:07:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 10:07:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 10:07:33,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 10:07:33,658 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-06 10:07:33,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:07:33 BoogieIcfgContainer [2021-07-06 10:07:33,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 10:07:33,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 10:07:33,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 10:07:33,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 10:07:33,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 10:07:32" (1/3) ... [2021-07-06 10:07:33,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e80b1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 10:07:33, skipping insertion in model container [2021-07-06 10:07:33,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:07:33" (2/3) ... [2021-07-06 10:07:33,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e80b1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 10:07:33, skipping insertion in model container [2021-07-06 10:07:33,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:07:33" (3/3) ... [2021-07-06 10:07:33,671 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2021-07-06 10:07:33,676 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 10:07:33,676 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-07-06 10:07:33,734 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr0REQUIRES_VIOLATION ======== [2021-07-06 10:07:33,738 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:33,738 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 10:07:33,768 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:33,769 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:33,769 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION] === [2021-07-06 10:07:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:33,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1320510785, now seen corresponding path program 1 times [2021-07-06 10:07:33,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:33,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962111658] [2021-07-06 10:07:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:33,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:33,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:33,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:33,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:33,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962111658] [2021-07-06 10:07:34,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962111658] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:34,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264740539] [2021-07-06 10:07:34,032 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:34,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:34,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,046 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-06 10:07:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,153 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-07-06 10:07:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,158 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,159 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,160 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 10:07:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,175 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,175 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-06 10:07:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,177 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 10:07:34,177 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,180 INFO L303 ceAbstractionStarter]: Result for error location mainErr0REQUIRES_VIOLATION was SAFE (1/16) [2021-07-06 10:07:34,185 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr1REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,186 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,187 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 10:07:34,191 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,191 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,191 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION] === [2021-07-06 10:07:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1320510786, now seen corresponding path program 1 times [2021-07-06 10:07:34,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196202927] [2021-07-06 10:07:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,250 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 10:07:34,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196202927] [2021-07-06 10:07:34,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196202927] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:34,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330647256] [2021-07-06 10:07:34,288 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:34,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:34,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,292 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-06 10:07:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,346 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-07-06 10:07:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,347 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,347 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,347 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 10:07:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,348 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,348 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-06 10:07:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,348 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 10:07:34,348 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,348 INFO L303 ceAbstractionStarter]: Result for error location mainErr1REQUIRES_VIOLATION was SAFE (2/16) [2021-07-06 10:07:34,349 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr2REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,349 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,349 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 10:07:34,351 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,351 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,351 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION] === [2021-07-06 10:07:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1731321045, now seen corresponding path program 1 times [2021-07-06 10:07:34,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190930097] [2021-07-06 10:07:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190930097] [2021-07-06 10:07:34,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190930097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:34,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112011378] [2021-07-06 10:07:34,410 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:34,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:34,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,411 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,456 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2021-07-06 10:07:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,457 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,457 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,457 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 10:07:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,458 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,458 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,459 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-06 10:07:34,459 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,459 INFO L303 ceAbstractionStarter]: Result for error location mainErr2REQUIRES_VIOLATION was SAFE (3/16) [2021-07-06 10:07:34,460 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr3REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,460 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,460 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 10:07:34,462 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,462 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,462 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION] === [2021-07-06 10:07:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1731321046, now seen corresponding path program 1 times [2021-07-06 10:07:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846396094] [2021-07-06 10:07:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,484 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-07-06 10:07:34,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 10:07:34,493 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 10:07:34,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846396094] [2021-07-06 10:07:34,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846396094] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 10:07:34,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812370524] [2021-07-06 10:07:34,533 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 10:07:34,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 10:07:34,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:34,535 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,584 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-07-06 10:07:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,585 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,585 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,587 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,587 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 10:07:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,588 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,588 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,588 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-06 10:07:34,589 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,589 INFO L303 ceAbstractionStarter]: Result for error location mainErr3REQUIRES_VIOLATION was SAFE (4/16) [2021-07-06 10:07:34,590 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr4REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,590 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,590 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 10:07:34,591 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,591 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,591 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION] === [2021-07-06 10:07:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1731321205, now seen corresponding path program 1 times [2021-07-06 10:07:34,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123044825] [2021-07-06 10:07:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123044825] [2021-07-06 10:07:34,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123044825] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:34,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470828667] [2021-07-06 10:07:34,626 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:34,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,626 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,672 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2021-07-06 10:07:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,672 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,673 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,673 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 10:07:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,673 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,673 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,674 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-06 10:07:34,674 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,674 INFO L303 ceAbstractionStarter]: Result for error location mainErr4REQUIRES_VIOLATION was SAFE (5/16) [2021-07-06 10:07:34,674 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr5REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,675 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,675 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 10:07:34,676 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,676 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,676 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr5REQUIRES_VIOLATION] === [2021-07-06 10:07:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1731321206, now seen corresponding path program 1 times [2021-07-06 10:07:34,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720633167] [2021-07-06 10:07:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,691 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-07-06 10:07:34,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 10:07:34,702 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 10:07:34,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:34,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720633167] [2021-07-06 10:07:34,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720633167] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 10:07:34,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209155215] [2021-07-06 10:07:34,727 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 10:07:34,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 10:07:34,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:34,728 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,768 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-07-06 10:07:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,769 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,769 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,769 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 10:07:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,770 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,770 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-07-06 10:07:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,770 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-06 10:07:34,770 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,770 INFO L303 ceAbstractionStarter]: Result for error location mainErr5REQUIRES_VIOLATION was SAFE (6/16) [2021-07-06 10:07:34,771 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr6REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,771 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,771 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 10:07:34,772 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,772 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,772 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr6REQUIRES_VIOLATION] === [2021-07-06 10:07:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2131344845, now seen corresponding path program 1 times [2021-07-06 10:07:34,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960783884] [2021-07-06 10:07:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:34,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960783884] [2021-07-06 10:07:34,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960783884] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:34,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772637867] [2021-07-06 10:07:34,810 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:34,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:34,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,812 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-07-06 10:07:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:34,856 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:34,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 11 [2021-07-06 10:07:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:34,857 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:34,857 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:34,857 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:34,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 10:07:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:34,858 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:34,858 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-07-06 10:07:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:34,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:34,859 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-06 10:07:34,859 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:34,859 INFO L303 ceAbstractionStarter]: Result for error location mainErr6REQUIRES_VIOLATION was SAFE (7/16) [2021-07-06 10:07:34,860 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr7REQUIRES_VIOLATION ======== [2021-07-06 10:07:34,861 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:34,861 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 10:07:34,865 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:34,865 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:34,865 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr7REQUIRES_VIOLATION] === [2021-07-06 10:07:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2131344846, now seen corresponding path program 1 times [2021-07-06 10:07:34,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:34,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555859377] [2021-07-06 10:07:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:34,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:34,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 10:07:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:34,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:34,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:34,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555859377] [2021-07-06 10:07:34,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555859377] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:34,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:34,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 10:07:34,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966509713] [2021-07-06 10:07:34,975 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 10:07:34,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:34,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 10:07:34,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:34,976 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-07-06 10:07:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,037 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-07-06 10:07:35,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,038 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:35,038 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,038 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 10:07:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,039 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,039 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-07-06 10:07:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,039 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-06 10:07:35,039 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,039 INFO L303 ceAbstractionStarter]: Result for error location mainErr7REQUIRES_VIOLATION was SAFE (8/16) [2021-07-06 10:07:35,040 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr8REQUIRES_VIOLATION ======== [2021-07-06 10:07:35,040 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,040 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 10:07:35,041 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,041 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,041 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION] === [2021-07-06 10:07:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash -477003922, now seen corresponding path program 1 times [2021-07-06 10:07:35,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408022124] [2021-07-06 10:07:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408022124] [2021-07-06 10:07:35,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408022124] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:35,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675455784] [2021-07-06 10:07:35,079 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:35,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:35,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:35,080 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-07-06 10:07:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,137 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-07-06 10:07:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,139 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:35,139 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,139 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 10:07:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,141 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,141 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-07-06 10:07:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,142 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-06 10:07:35,142 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,142 INFO L303 ceAbstractionStarter]: Result for error location mainErr8REQUIRES_VIOLATION was SAFE (9/16) [2021-07-06 10:07:35,144 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr9REQUIRES_VIOLATION ======== [2021-07-06 10:07:35,144 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,144 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 10:07:35,148 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,148 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,148 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION] === [2021-07-06 10:07:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash -477003921, now seen corresponding path program 1 times [2021-07-06 10:07:35,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862587972] [2021-07-06 10:07:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:35,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 10:07:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862587972] [2021-07-06 10:07:35,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862587972] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 10:07:35,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674015414] [2021-07-06 10:07:35,226 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 10:07:35,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 10:07:35,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:35,227 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2021-07-06 10:07:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,286 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-07-06 10:07:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:35,286 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 [2021-07-06 10:07:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,286 INFO L225 Difference]: With dead ends: 35 [2021-07-06 10:07:35,286 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,286 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,287 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 10:07:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,287 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,287 INFO L443 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) [2021-07-06 10:07:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,287 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-06 10:07:35,287 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,287 INFO L303 ceAbstractionStarter]: Result for error location mainErr9REQUIRES_VIOLATION was SAFE (10/16) [2021-07-06 10:07:35,288 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr10REQUIRES_VIOLATION ======== [2021-07-06 10:07:35,288 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,288 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 10:07:35,289 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,289 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,289 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr10REQUIRES_VIOLATION] === [2021-07-06 10:07:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash -477003761, now seen corresponding path program 1 times [2021-07-06 10:07:35,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763249057] [2021-07-06 10:07:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763249057] [2021-07-06 10:07:35,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763249057] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 10:07:35,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146367799] [2021-07-06 10:07:35,326 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 10:07:35,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 10:07:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:35,326 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-07-06 10:07:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,366 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-07-06 10:07:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:35,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-07-06 10:07:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,366 INFO L225 Difference]: With dead ends: 32 [2021-07-06 10:07:35,366 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,367 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 10:07:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 10:07:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,367 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,367 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-07-06 10:07:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,367 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-06 10:07:35,367 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,380 INFO L303 ceAbstractionStarter]: Result for error location mainErr10REQUIRES_VIOLATION was SAFE (11/16) [2021-07-06 10:07:35,381 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr11REQUIRES_VIOLATION ======== [2021-07-06 10:07:35,381 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,381 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 10:07:35,382 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,382 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,383 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr11REQUIRES_VIOLATION] === [2021-07-06 10:07:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,383 INFO L82 PathProgramCache]: Analyzing trace with hash -477003760, now seen corresponding path program 1 times [2021-07-06 10:07:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308522868] [2021-07-06 10:07:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:35,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 10:07:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308522868] [2021-07-06 10:07:35,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308522868] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 10:07:35,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106762124] [2021-07-06 10:07:35,418 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 10:07:35,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 10:07:35,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:35,418 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2021-07-06 10:07:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,480 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-07-06 10:07:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 10:07:35,480 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 [2021-07-06 10:07:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,481 INFO L225 Difference]: With dead ends: 35 [2021-07-06 10:07:35,481 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,481 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 10:07:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 10:07:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,481 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,482 INFO L443 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) [2021-07-06 10:07:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,482 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-06 10:07:35,482 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,482 INFO L303 ceAbstractionStarter]: Result for error location mainErr11REQUIRES_VIOLATION was SAFE (12/16) [2021-07-06 10:07:35,483 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr12ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 10:07:35,483 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,483 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-06 10:07:35,484 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,484 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,484 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr12ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 10:07:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1902214687, now seen corresponding path program 1 times [2021-07-06 10:07:35,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468689347] [2021-07-06 10:07:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:35,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 10:07:35,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 10:07:35,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468689347] [2021-07-06 10:07:35,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468689347] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 10:07:35,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514896859] [2021-07-06 10:07:35,540 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 10:07:35,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 10:07:35,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 10:07:35,541 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-07-06 10:07:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,627 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-07-06 10:07:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 10:07:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14 [2021-07-06 10:07:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,627 INFO L225 Difference]: With dead ends: 37 [2021-07-06 10:07:35,628 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,628 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 10:07:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-06 10:07:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,628 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,628 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-07-06 10:07:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,629 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-06 10:07:35,629 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,629 INFO L303 ceAbstractionStarter]: Result for error location mainErr12ASSERT_VIOLATIONMEMORY_FREE was SAFE (13/16) [2021-07-06 10:07:35,630 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr13ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 10:07:35,630 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,630 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-06 10:07:35,631 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,631 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,631 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr13ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 10:07:35,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1160886927, now seen corresponding path program 1 times [2021-07-06 10:07:35,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814042715] [2021-07-06 10:07:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:35,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:35,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:35,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:35,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814042715] [2021-07-06 10:07:35,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814042715] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 10:07:35,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344746839] [2021-07-06 10:07:35,689 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 10:07:35,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 10:07:35,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 10:07:35,690 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-07-06 10:07:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,773 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-07-06 10:07:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 10:07:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2021-07-06 10:07:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,774 INFO L225 Difference]: With dead ends: 37 [2021-07-06 10:07:35,774 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,774 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 10:07:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-07-06 10:07:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,775 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,775 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-07-06 10:07:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,775 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,775 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-06 10:07:35,776 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,776 INFO L303 ceAbstractionStarter]: Result for error location mainErr13ASSERT_VIOLATIONMEMORY_FREE was SAFE (14/16) [2021-07-06 10:07:35,776 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr14ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 10:07:35,777 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,777 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-06 10:07:35,778 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,778 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,778 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr14ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 10:07:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1627756451, now seen corresponding path program 1 times [2021-07-06 10:07:35,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549475140] [2021-07-06 10:07:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:35,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:35,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 10:07:35,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 10:07:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:35,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:35,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549475140] [2021-07-06 10:07:35,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549475140] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:35,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:35,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 10:07:35,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142448345] [2021-07-06 10:07:35,830 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 10:07:35,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:35,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 10:07:35,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 10:07:35,830 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-07-06 10:07:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:35,918 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-07-06 10:07:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 10:07:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-07-06 10:07:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:35,919 INFO L225 Difference]: With dead ends: 37 [2021-07-06 10:07:35,919 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:35,919 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 10:07:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:35,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-07-06 10:07:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:35,919 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:35,920 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-07-06 10:07:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:35,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:35,920 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-06 10:07:35,920 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:35,920 INFO L303 ceAbstractionStarter]: Result for error location mainErr14ASSERT_VIOLATIONMEMORY_FREE was SAFE (15/16) [2021-07-06 10:07:35,921 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr15ENSURES_VIOLATIONMEMORY_LEAK ======== [2021-07-06 10:07:35,921 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 10:07:35,921 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 10:07:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 10:07:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-07-06 10:07:35,922 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 10:07:35,922 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 10:07:35,922 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK] === [2021-07-06 10:07:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 10:07:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1079157486, now seen corresponding path program 1 times [2021-07-06 10:07:35,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 10:07:35,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324664806] [2021-07-06 10:07:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 10:07:35,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 10:07:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:35,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:35,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:35,953 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-07-06 10:07:35,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-06 10:07:35,969 INFO L142 QuantifierPusher]: treesize reduction 16, result has 72.9 percent of original size [2021-07-06 10:07:35,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 10:07:35,984 INFO L142 QuantifierPusher]: treesize reduction 16, result has 72.9 percent of original size [2021-07-06 10:07:35,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 10:07:35,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 10:07:35,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:35,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 10:07:36,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 10:07:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 10:07:36,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 10:07:36,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 10:07:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 10:07:36,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 10:07:36,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324664806] [2021-07-06 10:07:36,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324664806] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 10:07:36,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 10:07:36,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 10:07:36,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597361438] [2021-07-06 10:07:36,017 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 10:07:36,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 10:07:36,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 10:07:36,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-06 10:07:36,018 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-07-06 10:07:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 10:07:36,121 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-07-06 10:07:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 10:07:36,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 17 [2021-07-06 10:07:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 10:07:36,122 INFO L225 Difference]: With dead ends: 37 [2021-07-06 10:07:36,122 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 10:07:36,127 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-06 10:07:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 10:07:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 10:07:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 10:07:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 10:07:36,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-07-06 10:07:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 10:07:36,127 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 10:07:36,127 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-07-06 10:07:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 10:07:36,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 10:07:36,127 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-06 10:07:36,128 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 10:07:36,128 INFO L303 ceAbstractionStarter]: Result for error location mainErr15ENSURES_VIOLATIONMEMORY_LEAK was SAFE (16/16) [2021-07-06 10:07:36,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 10:07:36 BoogieIcfgContainer [2021-07-06 10:07:36,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 10:07:36,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 10:07:36,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 10:07:36,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 10:07:36,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:07:33" (3/4) ... [2021-07-06 10:07:36,139 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-07-06 10:07:36,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-07-06 10:07:36,146 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-07-06 10:07:36,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-07-06 10:07:36,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-06 10:07:36,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 10:07:36,167 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 10:07:36,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 10:07:36,168 INFO L168 Benchmark]: Toolchain (without parser) took 3464.83 ms. Allocated memory was 65.0 MB in the beginning and 100.7 MB in the end (delta: 35.7 MB). Free memory was 44.6 MB in the beginning and 78.8 MB in the end (delta: -34.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2021-07-06 10:07:36,168 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 65.0 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 10:07:36,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.25 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 37.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 10:07:36,168 INFO L168 Benchmark]: Boogie Preprocessor took 63.09 ms. Allocated memory is still 65.0 MB. Free memory was 37.0 MB in the beginning and 34.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 10:07:36,169 INFO L168 Benchmark]: RCFGBuilder took 587.31 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 34.5 MB in the beginning and 53.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-07-06 10:07:36,169 INFO L168 Benchmark]: TraceAbstraction took 2471.53 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 53.3 MB in the beginning and 26.9 MB in the end (delta: 26.4 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2021-07-06 10:07:36,169 INFO L168 Benchmark]: Witness Printer took 35.84 ms. Allocated memory is still 100.7 MB. Free memory was 26.9 MB in the beginning and 78.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2021-07-06 10:07:36,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 65.0 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.25 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 37.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.09 ms. Allocated memory is still 65.0 MB. Free memory was 37.0 MB in the beginning and 34.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 587.31 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 34.5 MB in the beginning and 53.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2471.53 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 53.3 MB in the beginning and 26.9 MB in the end (delta: 26.4 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * Witness Printer took 35.84 ms. Allocated memory is still 100.7 MB. Free memory was 26.9 MB in the beginning and 78.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 3.7 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 447.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.0ms, AutomataDifference: 126.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 22 SDslu, 10 SDs, 0 SdLazy, 47 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.8ms SsaConstructionTime, 38.3ms SatisfiabilityAnalysisTime, 92.8ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr1REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 162.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 59.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 12 SDs, 0 SdLazy, 44 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8ms SsaConstructionTime, 23.5ms SatisfiabilityAnalysisTime, 61.4ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr2REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 110.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 46.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 19 SDslu, 10 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 4.9ms SatisfiabilityAnalysisTime, 49.1ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr3REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 128.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.8ms, AutomataDifference: 52.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 41 SDslu, 12 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 5.3ms SatisfiabilityAnalysisTime, 59.7ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr4REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 84.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 46.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 19 SDslu, 10 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 3.2ms SatisfiabilityAnalysisTime, 26.1ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr5REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 95.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 41.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 41 SDslu, 12 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 3.7ms SatisfiabilityAnalysisTime, 43.6ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr6REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 88.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 46.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 2.8ms SatisfiabilityAnalysisTime, 30.3ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr7REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 179.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 62.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 20 SDs, 0 SdLazy, 46 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8ms SsaConstructionTime, 3.2ms SatisfiabilityAnalysisTime, 100.6ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr8REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 102.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 59.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 16 SDslu, 10 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 2.5ms SatisfiabilityAnalysisTime, 31.3ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr9REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 143.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.6ms, AutomataDifference: 60.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 25 SDslu, 20 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 4.3ms SatisfiabilityAnalysisTime, 64.1ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr10REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 79.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 40.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 16 SDslu, 10 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 2.6ms SatisfiabilityAnalysisTime, 29.3ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr11REQUIRES_VIOLATION CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 101.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 62.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 25 SDslu, 20 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 2.4ms SatisfiabilityAnalysisTime, 29.0ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr12ASSERT_VIOLATIONMEMORY_FREE CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 146.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 87.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 47 SDslu, 33 SDs, 0 SdLazy, 76 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 3.8ms SatisfiabilityAnalysisTime, 46.4ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr13ASSERT_VIOLATIONMEMORY_FREE CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 145.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 85.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 46 SDslu, 30 SDs, 0 SdLazy, 80 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 3.6ms SatisfiabilityAnalysisTime, 49.0ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr14ASSERT_VIOLATIONMEMORY_FREE CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 143.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 88.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 43 SDslu, 28 SDs, 0 SdLazy, 86 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 3.7ms SatisfiabilityAnalysisTime, 43.1ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr15ENSURES_VIOLATIONMEMORY_LEAK CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 206.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 109.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 47 SDslu, 27 SDs, 0 SdLazy, 121 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 6.5ms SatisfiabilityAnalysisTime, 82.0ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-07-06 10:07:36,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...