./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95135695b4ab9cb9c416390540cae35b9fbb32e4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:03:19,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:03:19,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:03:19,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:03:19,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:03:19,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:03:19,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:03:19,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:03:19,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:03:19,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:03:19,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:03:19,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:03:19,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:03:19,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:03:19,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:03:19,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:03:19,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:03:19,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:03:19,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:03:19,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:03:19,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:03:19,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:03:19,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:03:19,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:03:19,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:03:19,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:03:19,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:03:19,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:03:19,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:03:19,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:03:19,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:03:19,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:03:19,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:03:19,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:03:19,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:03:19,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:03:19,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:03:19,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:03:19,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:03:19,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:03:19,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:03:19,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-11-28 03:03:19,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:03:19,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:03:19,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:03:19,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:03:19,738 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:03:19,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:03:19,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:03:19,738 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:03:19,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:03:19,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:03:19,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:03:19,739 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:03:19,739 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:03:19,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:03:19,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:03:19,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:03:19,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:03:19,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:03:19,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:03:19,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:03:19,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:03:19,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:19,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:03:19,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:03:19,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:03:19,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:03:19,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:03:19,743 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:/tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95135695b4ab9cb9c416390540cae35b9fbb32e4 [2020-11-28 03:03:19,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:03:20,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:03:20,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:03:20,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:03:20,048 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:03:20,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-token-1.i [2020-11-28 03:03:20,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/data/beb118003/e81b92bd466b4e40afda23a68df15968/FLAG7bcbc1b6c [2020-11-28 03:03:20,664 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:03:20,665 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/sv-benchmarks/c/forester-heap/sll-token-1.i [2020-11-28 03:03:20,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/data/beb118003/e81b92bd466b4e40afda23a68df15968/FLAG7bcbc1b6c [2020-11-28 03:03:20,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/data/beb118003/e81b92bd466b4e40afda23a68df15968 [2020-11-28 03:03:20,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:03:20,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:03:20,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:20,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:03:21,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:03:21,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:20" (1/1) ... [2020-11-28 03:03:21,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68215b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21, skipping insertion in model container [2020-11-28 03:03:21,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:20" (1/1) ... [2020-11-28 03:03:21,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:03:21,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:03:21,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:21,556 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:03:21,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:21,698 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:03:21,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21 WrapperNode [2020-11-28 03:03:21,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:21,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:03:21,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:03:21,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:03:21,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... [2020-11-28 03:03:21,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:03:21,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:03:21,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:03:21,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:03:21,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:21,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:03:21,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:03:21,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:03:21,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:03:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:03:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:03:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:03:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:03:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:03:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:03:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:03:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:03:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:03:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:03:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:03:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:03:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:03:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:03:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:03:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:03:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:03:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:03:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:03:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:03:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:03:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:03:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:03:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:03:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:03:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:03:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:03:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:03:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:03:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:03:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:03:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:03:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:03:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:03:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:03:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:03:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:03:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:03:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:03:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:03:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:03:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:03:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:03:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:03:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:03:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:03:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:03:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:03:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:03:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:03:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:03:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:03:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:03:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:03:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-28 03:03:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:03:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:03:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:03:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:03:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:03:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:03:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:03:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:03:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:03:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:03:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:03:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:03:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:03:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:03:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:03:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:03:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:03:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:03:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:03:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:03:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:03:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:03:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:03:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:03:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:03:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:03:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:03:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:03:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:03:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:03:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:03:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:03:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:03:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:03:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:03:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:03:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:03:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:03:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:03:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:03:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:03:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:03:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:03:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:03:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:03:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:03:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:03:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:03:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:03:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:03:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:03:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:03:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:03:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:03:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:03:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:03:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:03:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:03:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:03:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:03:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:03:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:03:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:03:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:03:22,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:03:22,774 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-28 03:03:22,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:22 BoogieIcfgContainer [2020-11-28 03:03:22,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:03:22,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:03:22,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:03:22,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:03:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:20" (1/3) ... [2020-11-28 03:03:22,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e86e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:22, skipping insertion in model container [2020-11-28 03:03:22,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:21" (2/3) ... [2020-11-28 03:03:22,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e86e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:22, skipping insertion in model container [2020-11-28 03:03:22,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:22" (3/3) ... [2020-11-28 03:03:22,787 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-11-28 03:03:22,799 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:03:22,804 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 49 error locations. [2020-11-28 03:03:22,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2020-11-28 03:03:22,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:03:22,836 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:03:22,836 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:03:22,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:03:22,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:03:22,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:03:22,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:03:22,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:03:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-28 03:03:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:03:22,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:22,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:22,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash -189780735, now seen corresponding path program 1 times [2020-11-28 03:03:22,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:22,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278579762] [2020-11-28 03:03:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:23,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278579762] [2020-11-28 03:03:23,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:23,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:03:23,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215876984] [2020-11-28 03:03:23,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:23,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:23,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:23,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:23,166 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2020-11-28 03:03:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:23,615 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2020-11-28 03:03:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:03:23,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:03:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:23,635 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:03:23,635 INFO L226 Difference]: Without dead ends: 133 [2020-11-28 03:03:23,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-28 03:03:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-11-28 03:03:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 03:03:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2020-11-28 03:03:23,724 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 7 [2020-11-28 03:03:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:23,725 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2020-11-28 03:03:23,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2020-11-28 03:03:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:03:23,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:23,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:23,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:03:23,731 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash -189780734, now seen corresponding path program 1 times [2020-11-28 03:03:23,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:23,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794085699] [2020-11-28 03:03:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:23,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794085699] [2020-11-28 03:03:23,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:23,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:03:23,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516080114] [2020-11-28 03:03:23,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:23,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:23,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:23,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:23,867 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 4 states. [2020-11-28 03:03:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:24,230 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-11-28 03:03:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:03:24,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:03:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:24,235 INFO L225 Difference]: With dead ends: 139 [2020-11-28 03:03:24,235 INFO L226 Difference]: Without dead ends: 139 [2020-11-28 03:03:24,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-28 03:03:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-11-28 03:03:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:03:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2020-11-28 03:03:24,254 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 7 [2020-11-28 03:03:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:24,255 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2020-11-28 03:03:24,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2020-11-28 03:03:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:03:24,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:24,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:24,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:03:24,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:24,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:24,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1145035767, now seen corresponding path program 1 times [2020-11-28 03:03:24,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:24,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492271278] [2020-11-28 03:03:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:24,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:24,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492271278] [2020-11-28 03:03:24,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:24,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:24,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517572025] [2020-11-28 03:03:24,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:24,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:24,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:24,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:24,402 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 5 states. [2020-11-28 03:03:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:24,718 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-11-28 03:03:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:03:24,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:03:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:24,720 INFO L225 Difference]: With dead ends: 117 [2020-11-28 03:03:24,720 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 03:03:24,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:03:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 03:03:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-11-28 03:03:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-28 03:03:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-11-28 03:03:24,730 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 12 [2020-11-28 03:03:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:24,730 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-11-28 03:03:24,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-11-28 03:03:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:03:24,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:24,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:24,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:03:24,732 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1145035768, now seen corresponding path program 1 times [2020-11-28 03:03:24,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:24,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707657821] [2020-11-28 03:03:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:24,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707657821] [2020-11-28 03:03:24,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:24,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:24,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196474307] [2020-11-28 03:03:24,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:24,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:24,859 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 5 states. [2020-11-28 03:03:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:25,377 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2020-11-28 03:03:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:25,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:03:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:25,381 INFO L225 Difference]: With dead ends: 177 [2020-11-28 03:03:25,381 INFO L226 Difference]: Without dead ends: 177 [2020-11-28 03:03:25,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:03:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-28 03:03:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 130. [2020-11-28 03:03:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:03:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2020-11-28 03:03:25,406 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 12 [2020-11-28 03:03:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:25,407 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2020-11-28 03:03:25,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2020-11-28 03:03:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:03:25,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:25,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:25,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:03:25,417 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:25,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1131195469, now seen corresponding path program 1 times [2020-11-28 03:03:25,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:25,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728611469] [2020-11-28 03:03:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:25,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:25,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728611469] [2020-11-28 03:03:25,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:25,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:03:25,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545172232] [2020-11-28 03:03:25,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:03:25,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:03:25,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:03:25,583 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 7 states. [2020-11-28 03:03:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:26,283 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2020-11-28 03:03:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:03:26,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-28 03:03:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:26,286 INFO L225 Difference]: With dead ends: 192 [2020-11-28 03:03:26,286 INFO L226 Difference]: Without dead ends: 192 [2020-11-28 03:03:26,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:03:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-28 03:03:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 129. [2020-11-28 03:03:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-28 03:03:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2020-11-28 03:03:26,297 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 15 [2020-11-28 03:03:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:26,298 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2020-11-28 03:03:26,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:03:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2020-11-28 03:03:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:03:26,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:26,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:26,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:03:26,300 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:26,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1131195470, now seen corresponding path program 1 times [2020-11-28 03:03:26,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:26,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770985028] [2020-11-28 03:03:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:26,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770985028] [2020-11-28 03:03:26,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:26,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:03:26,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343973827] [2020-11-28 03:03:26,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:03:26,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:03:26,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:03:26,484 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand 7 states. [2020-11-28 03:03:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:27,249 INFO L93 Difference]: Finished difference Result 214 states and 244 transitions. [2020-11-28 03:03:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:03:27,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-28 03:03:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:27,252 INFO L225 Difference]: With dead ends: 214 [2020-11-28 03:03:27,252 INFO L226 Difference]: Without dead ends: 214 [2020-11-28 03:03:27,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:03:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-28 03:03:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 115. [2020-11-28 03:03:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-28 03:03:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-11-28 03:03:27,271 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 15 [2020-11-28 03:03:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:27,272 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-11-28 03:03:27,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:03:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-11-28 03:03:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:03:27,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:27,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:27,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:03:27,276 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:27,277 INFO L82 PathProgramCache]: Analyzing trace with hash 679644411, now seen corresponding path program 1 times [2020-11-28 03:03:27,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:27,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223652583] [2020-11-28 03:03:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:27,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223652583] [2020-11-28 03:03:27,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:27,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:27,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013945276] [2020-11-28 03:03:27,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:03:27,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:27,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:03:27,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:03:27,421 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-11-28 03:03:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:27,812 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-11-28 03:03:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:03:27,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:03:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:27,814 INFO L225 Difference]: With dead ends: 121 [2020-11-28 03:03:27,815 INFO L226 Difference]: Without dead ends: 121 [2020-11-28 03:03:27,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:03:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-28 03:03:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-11-28 03:03:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 03:03:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2020-11-28 03:03:27,828 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 16 [2020-11-28 03:03:27,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:27,829 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2020-11-28 03:03:27,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:03:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2020-11-28 03:03:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:03:27,830 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:27,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:27,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:03:27,832 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash 679644412, now seen corresponding path program 1 times [2020-11-28 03:03:27,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:27,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720374257] [2020-11-28 03:03:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:27,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720374257] [2020-11-28 03:03:27,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:27,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:27,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738426058] [2020-11-28 03:03:27,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:03:27,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:27,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:03:27,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:03:27,981 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 6 states. [2020-11-28 03:03:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:28,370 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-11-28 03:03:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:03:28,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:03:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:28,372 INFO L225 Difference]: With dead ends: 113 [2020-11-28 03:03:28,372 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 03:03:28,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:03:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 03:03:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-28 03:03:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 03:03:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2020-11-28 03:03:28,377 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 16 [2020-11-28 03:03:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:28,377 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2020-11-28 03:03:28,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:03:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2020-11-28 03:03:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:03:28,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:28,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:28,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:03:28,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:28,379 INFO L82 PathProgramCache]: Analyzing trace with hash 696071059, now seen corresponding path program 1 times [2020-11-28 03:03:28,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:28,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416554541] [2020-11-28 03:03:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:28,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416554541] [2020-11-28 03:03:28,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:28,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:03:28,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148815534] [2020-11-28 03:03:28,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:03:28,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:28,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:03:28,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:03:28,489 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand 7 states. [2020-11-28 03:03:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:29,026 INFO L93 Difference]: Finished difference Result 209 states and 238 transitions. [2020-11-28 03:03:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:03:29,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:03:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:29,029 INFO L225 Difference]: With dead ends: 209 [2020-11-28 03:03:29,029 INFO L226 Difference]: Without dead ends: 209 [2020-11-28 03:03:29,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:03:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-28 03:03:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 112. [2020-11-28 03:03:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:03:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-11-28 03:03:29,035 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 19 [2020-11-28 03:03:29,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:29,038 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-11-28 03:03:29,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:03:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-11-28 03:03:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:03:29,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:29,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:29,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:03:29,040 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1845276885, now seen corresponding path program 1 times [2020-11-28 03:03:29,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472702199] [2020-11-28 03:03:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:29,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472702199] [2020-11-28 03:03:29,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:29,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:29,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876965626] [2020-11-28 03:03:29,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:29,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:29,183 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 5 states. [2020-11-28 03:03:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:29,483 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2020-11-28 03:03:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:03:29,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-28 03:03:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:29,485 INFO L225 Difference]: With dead ends: 163 [2020-11-28 03:03:29,485 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 03:03:29,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:03:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 03:03:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 111. [2020-11-28 03:03:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-28 03:03:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2020-11-28 03:03:29,490 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 21 [2020-11-28 03:03:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:29,490 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2020-11-28 03:03:29,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2020-11-28 03:03:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:03:29,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:29,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:29,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:03:29,495 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-28 03:03:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1016411300, now seen corresponding path program 1 times [2020-11-28 03:03:29,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:29,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859768432] [2020-11-28 03:03:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:03:29,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:03:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:03:29,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:03:29,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:03:29,629 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:03:29,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:03:29,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:03:29 BoogieIcfgContainer [2020-11-28 03:03:29,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:03:29,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:03:29,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:03:29,691 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:03:29,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:22" (3/4) ... [2020-11-28 03:03:29,694 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:03:29,771 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f0b8482a-61f0-464b-a7b2-5087291b7010/bin/uautomizer/witness.graphml [2020-11-28 03:03:29,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:03:29,774 INFO L168 Benchmark]: Toolchain (without parser) took 8786.93 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 59.6 MB in the beginning and 81.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:29,775 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 46.7 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:03:29,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.96 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 57.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:29,776 INFO L168 Benchmark]: Boogie Preprocessor took 61.53 ms. Allocated memory is still 92.3 MB. Free memory was 57.7 MB in the beginning and 55.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:29,779 INFO L168 Benchmark]: RCFGBuilder took 1015.67 ms. Allocated memory is still 92.3 MB. Free memory was 55.1 MB in the beginning and 36.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:29,782 INFO L168 Benchmark]: TraceAbstraction took 6911.66 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 35.6 MB in the beginning and 84.3 MB in the end (delta: -48.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:29,784 INFO L168 Benchmark]: Witness Printer took 81.32 ms. Allocated memory is still 161.5 MB. Free memory was 84.3 MB in the beginning and 81.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:29,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 46.7 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.96 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 57.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.53 ms. Allocated memory is still 92.3 MB. Free memory was 57.7 MB in the beginning and 55.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1015.67 ms. Allocated memory is still 92.3 MB. Free memory was 55.1 MB in the beginning and 36.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6911.66 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 35.6 MB in the beginning and 84.3 MB in the end (delta: -48.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * Witness Printer took 81.32 ms. Allocated memory is still 161.5 MB. Free memory was 84.3 MB in the beginning and 81.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1019] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1020] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1020] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1022] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) [L1031] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "sll-token-1.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 127 locations, 49 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 889 SDtfs, 1104 SDslu, 1378 SDs, 0 SdLazy, 2821 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 427 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 8442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...