./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-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_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/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 462c34e9f51057faedad8f148a3437a4550c80b7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-29 20:12:59,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:12:59,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:12:59,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:12:59,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:12:59,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:12:59,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:12:59,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:12:59,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:12:59,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:12:59,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:12:59,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:12:59,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:12:59,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:12:59,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:12:59,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:12:59,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:12:59,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:12:59,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:12:59,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:12:59,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:12:59,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:12:59,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:12:59,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:12:59,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:12:59,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:12:59,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:12:59,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:12:59,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:12:59,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:12:59,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:12:59,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:12:59,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:12:59,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:12:59,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:12:59,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:12:59,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:12:59,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:12:59,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:12:59,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:12:59,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:12:59,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-11-29 20:12:59,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:12:59,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:12:59,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:12:59,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:12:59,754 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:12:59,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:12:59,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:12:59,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:12:59,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:12:59,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:12:59,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:12:59,757 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:12:59,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:12:59,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:12:59,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:12:59,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:12:59,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:12:59,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:12:59,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:12:59,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:12:59,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:12:59,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:12:59,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:12:59,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:12:59,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:12:59,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:12:59,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:12:59,761 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_6c08312a-db1f-4917-b52a-f9b2e5e7c311/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462c34e9f51057faedad8f148a3437a4550c80b7 [2020-11-29 20:13:00,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:13:00,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:13:00,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:13:00,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:13:00,100 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:13:00,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2020-11-29 20:13:00,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/data/c070deb7a/1afa4e5d9ee94ccabc22ee8708405d42/FLAG62eb3db08 [2020-11-29 20:13:00,753 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:13:00,754 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2020-11-29 20:13:00,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/data/c070deb7a/1afa4e5d9ee94ccabc22ee8708405d42/FLAG62eb3db08 [2020-11-29 20:13:01,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/data/c070deb7a/1afa4e5d9ee94ccabc22ee8708405d42 [2020-11-29 20:13:01,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:13:01,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:13:01,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:13:01,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:13:01,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:13:01,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5869b531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01, skipping insertion in model container [2020-11-29 20:13:01,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:13:01,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:13:01,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:13:01,563 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:13:01,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:13:01,684 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:13:01,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01 WrapperNode [2020-11-29 20:13:01,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:13:01,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:13:01,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:13:01,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:13:01,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... [2020-11-29 20:13:01,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:13:01,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:13:01,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:13:01,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:13:01,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/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 [2020-11-29 20:13:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:13:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:13:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 20:13:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:13:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 20:13:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 20:13:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 20:13:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 20:13:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 20:13:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 20:13:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 20:13:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 20:13:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 20:13:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 20:13:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 20:13:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 20:13:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 20:13:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 20:13:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 20:13:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 20:13:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 20:13:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 20:13:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 20:13:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 20:13:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 20:13:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 20:13:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 20:13:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 20:13:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 20:13:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 20:13:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 20:13:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 20:13:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 20:13:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 20:13:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 20:13:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 20:13:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 20:13:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 20:13:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 20:13:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 20:13:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 20:13:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 20:13:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 20:13:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 20:13:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 20:13:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 20:13:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 20:13:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 20:13:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 20:13:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 20:13:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 20:13:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 20:13:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 20:13:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 20:13:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 20:13:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 20:13:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 20:13:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 20:13:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-29 20:13:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 20:13:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 20:13:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 20:13:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 20:13:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 20:13:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 20:13:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 20:13:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 20:13:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 20:13:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 20:13:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 20:13:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 20:13:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 20:13:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 20:13:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 20:13:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 20:13:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 20:13:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 20:13:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 20:13:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 20:13:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 20:13:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 20:13:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 20:13:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 20:13:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 20:13:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 20:13:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 20:13:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 20:13:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 20:13:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 20:13:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 20:13:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 20:13:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 20:13:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 20:13:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 20:13:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 20:13:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 20:13:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 20:13:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 20:13:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 20:13:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 20:13:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 20:13:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 20:13:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 20:13:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 20:13:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 20:13:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 20:13:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 20:13:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 20:13:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 20:13:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 20:13:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 20:13:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 20:13:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:13:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:13:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:13:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:13:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:13:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:13:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:13:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:13:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:13:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:13:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:13:02,720 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:13:02,720 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 20:13:02,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:13:02 BoogieIcfgContainer [2020-11-29 20:13:02,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:13:02,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:13:02,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:13:02,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:13:02,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:13:01" (1/3) ... [2020-11-29 20:13:02,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5435316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:13:02, skipping insertion in model container [2020-11-29 20:13:02,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:01" (2/3) ... [2020-11-29 20:13:02,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5435316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:13:02, skipping insertion in model container [2020-11-29 20:13:02,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:13:02" (3/3) ... [2020-11-29 20:13:02,736 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.i [2020-11-29 20:13:02,753 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:13:02,757 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2020-11-29 20:13:02,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2020-11-29 20:13:02,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:13:02,802 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:13:02,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:13:02,802 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:13:02,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:13:02,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:13:02,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:13:02,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:13:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-11-29 20:13:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:13:02,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:02,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:02,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:02,863 INFO L82 PathProgramCache]: Analyzing trace with hash -158475516, now seen corresponding path program 1 times [2020-11-29 20:13:02,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:02,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269054885] [2020-11-29 20:13:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:03,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:03,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269054885] [2020-11-29 20:13:03,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:03,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:13:03,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505541924] [2020-11-29 20:13:03,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:13:03,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:03,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:13:03,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:13:03,201 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 4 states. [2020-11-29 20:13:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:03,705 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-11-29 20:13:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:13:03,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:13:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:03,728 INFO L225 Difference]: With dead ends: 157 [2020-11-29 20:13:03,728 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 20:13:03,734 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 [2020-11-29 20:13:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 20:13:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-11-29 20:13:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-29 20:13:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2020-11-29 20:13:03,780 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 7 [2020-11-29 20:13:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:03,781 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2020-11-29 20:13:03,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:13:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2020-11-29 20:13:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:13:03,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:03,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:03,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:13:03,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:03,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:03,783 INFO L82 PathProgramCache]: Analyzing trace with hash -158475515, now seen corresponding path program 1 times [2020-11-29 20:13:03,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:03,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648471047] [2020-11-29 20:13:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:03,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648471047] [2020-11-29 20:13:03,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:03,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:13:03,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518234973] [2020-11-29 20:13:03,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:13:03,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:03,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:13:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:13:03,928 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 4 states. [2020-11-29 20:13:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:04,362 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2020-11-29 20:13:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:13:04,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:13:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:04,364 INFO L225 Difference]: With dead ends: 150 [2020-11-29 20:13:04,365 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 20:13:04,365 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 [2020-11-29 20:13:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 20:13:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-11-29 20:13:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 20:13:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2020-11-29 20:13:04,386 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2020-11-29 20:13:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:04,387 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2020-11-29 20:13:04,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:13:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2020-11-29 20:13:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:13:04,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:04,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:04,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:13:04,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash -959408531, now seen corresponding path program 1 times [2020-11-29 20:13:04,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:04,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032669333] [2020-11-29 20:13:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:04,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:04,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032669333] [2020-11-29 20:13:04,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:04,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:13:04,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832515777] [2020-11-29 20:13:04,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:04,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:04,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:04,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:13:04,547 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 5 states. [2020-11-29 20:13:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:04,977 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2020-11-29 20:13:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:13:04,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 20:13:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:04,979 INFO L225 Difference]: With dead ends: 122 [2020-11-29 20:13:04,980 INFO L226 Difference]: Without dead ends: 122 [2020-11-29 20:13:04,980 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 [2020-11-29 20:13:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-29 20:13:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2020-11-29 20:13:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 20:13:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2020-11-29 20:13:04,995 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 13 [2020-11-29 20:13:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:04,996 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2020-11-29 20:13:04,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2020-11-29 20:13:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:13:04,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:04,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:04,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:13:04,998 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash -959408530, now seen corresponding path program 1 times [2020-11-29 20:13:04,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:05,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433279370] [2020-11-29 20:13:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:05,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:05,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433279370] [2020-11-29 20:13:05,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:05,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:13:05,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766013218] [2020-11-29 20:13:05,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:13:05,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:05,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:13:05,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:13:05,178 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand 7 states. [2020-11-29 20:13:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:05,712 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2020-11-29 20:13:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:13:05,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-29 20:13:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:05,714 INFO L225 Difference]: With dead ends: 165 [2020-11-29 20:13:05,714 INFO L226 Difference]: Without dead ends: 165 [2020-11-29 20:13:05,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:13:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-29 20:13:05,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 144. [2020-11-29 20:13:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-29 20:13:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 173 transitions. [2020-11-29 20:13:05,725 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 173 transitions. Word has length 13 [2020-11-29 20:13:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:05,725 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 173 transitions. [2020-11-29 20:13:05,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:13:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 173 transitions. [2020-11-29 20:13:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:13:05,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:05,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:05,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:13:05,727 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1426370512, now seen corresponding path program 1 times [2020-11-29 20:13:05,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:05,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102303615] [2020-11-29 20:13:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:05,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:05,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102303615] [2020-11-29 20:13:05,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:05,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:13:05,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185032382] [2020-11-29 20:13:05,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:13:05,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:05,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:13:05,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:13:05,841 INFO L87 Difference]: Start difference. First operand 144 states and 173 transitions. Second operand 6 states. [2020-11-29 20:13:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:06,362 INFO L93 Difference]: Finished difference Result 241 states and 291 transitions. [2020-11-29 20:13:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:13:06,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 20:13:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:06,364 INFO L225 Difference]: With dead ends: 241 [2020-11-29 20:13:06,365 INFO L226 Difference]: Without dead ends: 241 [2020-11-29 20:13:06,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:13:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-11-29 20:13:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 143. [2020-11-29 20:13:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 20:13:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 171 transitions. [2020-11-29 20:13:06,377 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 171 transitions. Word has length 15 [2020-11-29 20:13:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:06,377 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 171 transitions. [2020-11-29 20:13:06,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:13:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 171 transitions. [2020-11-29 20:13:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:13:06,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:06,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:06,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:13:06,379 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1426370513, now seen corresponding path program 1 times [2020-11-29 20:13:06,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:06,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800531227] [2020-11-29 20:13:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:06,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800531227] [2020-11-29 20:13:06,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:06,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:13:06,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900945911] [2020-11-29 20:13:06,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:13:06,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:06,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:13:06,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:13:06,485 INFO L87 Difference]: Start difference. First operand 143 states and 171 transitions. Second operand 6 states. [2020-11-29 20:13:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:07,173 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-11-29 20:13:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:13:07,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 20:13:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:07,177 INFO L225 Difference]: With dead ends: 248 [2020-11-29 20:13:07,177 INFO L226 Difference]: Without dead ends: 248 [2020-11-29 20:13:07,177 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 [2020-11-29 20:13:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-11-29 20:13:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 142. [2020-11-29 20:13:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 20:13:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2020-11-29 20:13:07,199 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 15 [2020-11-29 20:13:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:07,200 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2020-11-29 20:13:07,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:13:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2020-11-29 20:13:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:13:07,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:07,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:07,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:13:07,201 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash -527599917, now seen corresponding path program 1 times [2020-11-29 20:13:07,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:07,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237202569] [2020-11-29 20:13:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:07,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237202569] [2020-11-29 20:13:07,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:07,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 20:13:07,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380297133] [2020-11-29 20:13:07,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:13:07,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:07,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:13:07,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:13:07,422 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand 11 states. [2020-11-29 20:13:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:08,490 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-11-29 20:13:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 20:13:08,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-11-29 20:13:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:08,492 INFO L225 Difference]: With dead ends: 147 [2020-11-29 20:13:08,492 INFO L226 Difference]: Without dead ends: 147 [2020-11-29 20:13:08,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-11-29 20:13:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-29 20:13:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2020-11-29 20:13:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-29 20:13:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2020-11-29 20:13:08,505 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 19 [2020-11-29 20:13:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:08,505 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2020-11-29 20:13:08,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:13:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2020-11-29 20:13:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:13:08,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:08,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:08,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:13:08,507 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:08,507 INFO L82 PathProgramCache]: Analyzing trace with hash -527599918, now seen corresponding path program 1 times [2020-11-29 20:13:08,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:08,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528829463] [2020-11-29 20:13:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:08,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528829463] [2020-11-29 20:13:08,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:08,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 20:13:08,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659342350] [2020-11-29 20:13:08,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:13:08,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:08,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:13:08,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:13:08,701 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand 10 states. [2020-11-29 20:13:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:09,254 INFO L93 Difference]: Finished difference Result 136 states and 157 transitions. [2020-11-29 20:13:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:13:09,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-29 20:13:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:09,257 INFO L225 Difference]: With dead ends: 136 [2020-11-29 20:13:09,257 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 20:13:09,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:13:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 20:13:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2020-11-29 20:13:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-29 20:13:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2020-11-29 20:13:09,263 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 19 [2020-11-29 20:13:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:09,263 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2020-11-29 20:13:09,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:13:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2020-11-29 20:13:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:13:09,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:09,264 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] [2020-11-29 20:13:09,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:13:09,264 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash -624437830, now seen corresponding path program 1 times [2020-11-29 20:13:09,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:09,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631709170] [2020-11-29 20:13:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:09,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631709170] [2020-11-29 20:13:09,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:09,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:13:09,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354520214] [2020-11-29 20:13:09,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:13:09,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:09,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:13:09,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:13:09,396 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand 6 states. [2020-11-29 20:13:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:09,735 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2020-11-29 20:13:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:13:09,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 20:13:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:09,736 INFO L225 Difference]: With dead ends: 140 [2020-11-29 20:13:09,736 INFO L226 Difference]: Without dead ends: 140 [2020-11-29 20:13:09,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:13:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-29 20:13:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2020-11-29 20:13:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-29 20:13:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2020-11-29 20:13:09,741 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 20 [2020-11-29 20:13:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:09,742 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2020-11-29 20:13:09,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:13:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2020-11-29 20:13:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:13:09,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:09,743 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] [2020-11-29 20:13:09,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:13:09,743 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:09,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1133209634, now seen corresponding path program 1 times [2020-11-29 20:13:09,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:09,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831668158] [2020-11-29 20:13:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:09,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831668158] [2020-11-29 20:13:09,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:09,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:13:09,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516798889] [2020-11-29 20:13:09,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:09,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:09,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:13:09,856 INFO L87 Difference]: Start difference. First operand 135 states and 163 transitions. Second operand 5 states. [2020-11-29 20:13:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:10,186 INFO L93 Difference]: Finished difference Result 158 states and 182 transitions. [2020-11-29 20:13:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:13:10,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 20:13:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:10,190 INFO L225 Difference]: With dead ends: 158 [2020-11-29 20:13:10,190 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 20:13:10,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:13:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 20:13:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 119. [2020-11-29 20:13:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 20:13:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-11-29 20:13:10,195 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 20 [2020-11-29 20:13:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:10,195 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-11-29 20:13:10,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-11-29 20:13:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:13:10,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:10,202 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] [2020-11-29 20:13:10,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:13:10,203 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash -325805458, now seen corresponding path program 1 times [2020-11-29 20:13:10,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:10,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892324019] [2020-11-29 20:13:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:10,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892324019] [2020-11-29 20:13:10,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:10,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:13:10,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260312817] [2020-11-29 20:13:10,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:13:10,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:10,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:13:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:13:10,324 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 7 states. [2020-11-29 20:13:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:10,840 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2020-11-29 20:13:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:13:10,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-29 20:13:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:10,841 INFO L225 Difference]: With dead ends: 154 [2020-11-29 20:13:10,841 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 20:13:10,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:13:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 20:13:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2020-11-29 20:13:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-29 20:13:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2020-11-29 20:13:10,848 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 22 [2020-11-29 20:13:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:10,848 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2020-11-29 20:13:10,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:13:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2020-11-29 20:13:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:13:10,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:10,849 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] [2020-11-29 20:13:10,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:13:10,850 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:10,850 INFO L82 PathProgramCache]: Analyzing trace with hash -325805457, now seen corresponding path program 1 times [2020-11-29 20:13:10,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:10,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947938803] [2020-11-29 20:13:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:11,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:11,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947938803] [2020-11-29 20:13:11,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:11,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:13:11,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313965949] [2020-11-29 20:13:11,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:13:11,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:11,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:13:11,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:13:11,010 INFO L87 Difference]: Start difference. First operand 118 states and 132 transitions. Second operand 7 states. [2020-11-29 20:13:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:11,544 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-11-29 20:13:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:13:11,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-29 20:13:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:11,546 INFO L225 Difference]: With dead ends: 160 [2020-11-29 20:13:11,546 INFO L226 Difference]: Without dead ends: 160 [2020-11-29 20:13:11,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:13:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-29 20:13:11,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 115. [2020-11-29 20:13:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-29 20:13:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2020-11-29 20:13:11,551 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 22 [2020-11-29 20:13:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:11,552 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2020-11-29 20:13:11,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:13:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2020-11-29 20:13:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:13:11,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:11,558 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] [2020-11-29 20:13:11,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 20:13:11,559 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:11,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1100750679, now seen corresponding path program 1 times [2020-11-29 20:13:11,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:11,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627086366] [2020-11-29 20:13:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:11,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:11,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627086366] [2020-11-29 20:13:11,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391657815] [2020-11-29 20:13:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:13:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 20:13:11,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:13:12,024 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-29 20:13:12,024 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:13:12,066 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,067 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 20:13:12,138 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-29 20:13:12,139 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2020-11-29 20:13:12,140 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:13:12,147 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,147 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2020-11-29 20:13:12,183 INFO L350 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2020-11-29 20:13:12,183 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-11-29 20:13:12,184 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:13:12,197 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-11-29 20:13:12,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 20:13:12,227 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,228 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:13:12,229 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:13:12,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 20:13:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:12,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:13:12,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-11-29 20:13:12,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792104784] [2020-11-29 20:13:12,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:12,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:12,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:12,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:13:12,246 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 5 states. [2020-11-29 20:13:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:12,687 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-11-29 20:13:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:13:12,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-29 20:13:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:12,688 INFO L225 Difference]: With dead ends: 145 [2020-11-29 20:13:12,688 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 20:13:12,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:13:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 20:13:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 118. [2020-11-29 20:13:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-29 20:13:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2020-11-29 20:13:12,693 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 24 [2020-11-29 20:13:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:12,694 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2020-11-29 20:13:12,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2020-11-29 20:13:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:13:12,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:12,695 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] [2020-11-29 20:13:12,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 20:13:12,925 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash 555768290, now seen corresponding path program 1 times [2020-11-29 20:13:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:12,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974158676] [2020-11-29 20:13:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:13,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:13,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974158676] [2020-11-29 20:13:13,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:13,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 20:13:13,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664549162] [2020-11-29 20:13:13,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:13:13,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:13,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:13:13,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:13:13,112 INFO L87 Difference]: Start difference. First operand 118 states and 132 transitions. Second operand 7 states. [2020-11-29 20:13:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:13,610 INFO L93 Difference]: Finished difference Result 180 states and 200 transitions. [2020-11-29 20:13:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:13:13,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 20:13:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:13,612 INFO L225 Difference]: With dead ends: 180 [2020-11-29 20:13:13,612 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 20:13:13,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:13:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 20:13:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 130. [2020-11-29 20:13:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-29 20:13:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2020-11-29 20:13:13,621 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 25 [2020-11-29 20:13:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:13,622 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2020-11-29 20:13:13,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:13:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2020-11-29 20:13:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:13:13,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:13,626 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] [2020-11-29 20:13:13,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 20:13:13,626 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:13,629 INFO L82 PathProgramCache]: Analyzing trace with hash -238098129, now seen corresponding path program 1 times [2020-11-29 20:13:13,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:13,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053292049] [2020-11-29 20:13:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:13,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053292049] [2020-11-29 20:13:13,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:13,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:13:13,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105628967] [2020-11-29 20:13:13,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:13:13,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:13:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:13:13,819 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand 9 states. [2020-11-29 20:13:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:14,369 INFO L93 Difference]: Finished difference Result 158 states and 177 transitions. [2020-11-29 20:13:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:13:14,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-29 20:13:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:14,371 INFO L225 Difference]: With dead ends: 158 [2020-11-29 20:13:14,371 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 20:13:14,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:13:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 20:13:14,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-11-29 20:13:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-29 20:13:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2020-11-29 20:13:14,380 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 25 [2020-11-29 20:13:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:14,381 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2020-11-29 20:13:14,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:13:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2020-11-29 20:13:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:13:14,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:14,382 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] [2020-11-29 20:13:14,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 20:13:14,382 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash -238098128, now seen corresponding path program 1 times [2020-11-29 20:13:14,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:14,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964534587] [2020-11-29 20:13:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:13:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:13:14,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964534587] [2020-11-29 20:13:14,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:14,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:13:14,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971332284] [2020-11-29 20:13:14,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:13:14,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:14,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:13:14,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:13:14,613 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand 9 states. [2020-11-29 20:13:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:15,399 INFO L93 Difference]: Finished difference Result 181 states and 200 transitions. [2020-11-29 20:13:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:13:15,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-29 20:13:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:15,401 INFO L225 Difference]: With dead ends: 181 [2020-11-29 20:13:15,401 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 20:13:15,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:13:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 20:13:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 133. [2020-11-29 20:13:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-29 20:13:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2020-11-29 20:13:15,407 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 25 [2020-11-29 20:13:15,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:15,407 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2020-11-29 20:13:15,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:13:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2020-11-29 20:13:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 20:13:15,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:15,410 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, 1, 1, 1] [2020-11-29 20:13:15,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 20:13:15,411 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr59ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 20:13:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:15,412 INFO L82 PathProgramCache]: Analyzing trace with hash 822697320, now seen corresponding path program 1 times [2020-11-29 20:13:15,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:15,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488966026] [2020-11-29 20:13:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:13:15,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:13:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:13:15,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:13:15,503 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:13:15,503 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:13:15,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 20:13:15,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:13:15 BoogieIcfgContainer [2020-11-29 20:13:15,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:13:15,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:13:15,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:13:15,559 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:13:15,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:13:02" (3/4) ... [2020-11-29 20:13:15,570 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:13:15,633 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6c08312a-db1f-4917-b52a-f9b2e5e7c311/bin/uautomizer/witness.graphml [2020-11-29 20:13:15,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:13:15,635 INFO L168 Benchmark]: Toolchain (without parser) took 14575.64 ms. Allocated memory was 83.9 MB in the beginning and 192.9 MB in the end (delta: 109.1 MB). Free memory was 52.4 MB in the beginning and 90.5 MB in the end (delta: -38.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:15,635 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:13:15,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.73 ms. Allocated memory is still 83.9 MB. Free memory was 52.2 MB in the beginning and 50.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:15,636 INFO L168 Benchmark]: Boogie Preprocessor took 75.76 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:15,636 INFO L168 Benchmark]: RCFGBuilder took 959.29 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 47.7 MB in the beginning and 42.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:15,637 INFO L168 Benchmark]: TraceAbstraction took 12834.75 ms. Allocated memory was 109.1 MB in the beginning and 192.9 MB in the end (delta: 83.9 MB). Free memory was 42.8 MB in the beginning and 93.6 MB in the end (delta: -50.8 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:15,637 INFO L168 Benchmark]: Witness Printer took 74.43 ms. Allocated memory is still 192.9 MB. Free memory was 93.6 MB in the beginning and 90.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:15,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 616.73 ms. Allocated memory is still 83.9 MB. Free memory was 52.2 MB in the beginning and 50.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.76 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 959.29 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 47.7 MB in the beginning and 42.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12834.75 ms. Allocated memory was 109.1 MB in the beginning and 192.9 MB in the end (delta: 83.9 MB). Free memory was 42.8 MB in the beginning and 93.6 MB in the end (delta: -50.8 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Witness Printer took 74.43 ms. Allocated memory is still 192.9 MB. Free memory was 93.6 MB in the beginning and 90.5 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: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1001] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1003] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1021] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1022] x->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1023] x->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1024] head = x VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1050] x = head VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1053] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=1] [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->next={-1:0}] [L1059] x = x->next [L1060] COND TRUE \read(*x) VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1062] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=0] [L1062] COND TRUE x->data != 1 [L1063] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-simple-white-blue-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 135 locations, 61 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1294 SDtfs, 2105 SDslu, 2163 SDs, 0 SdLazy, 6032 SolverSat, 360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 10 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred 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, 16 MinimizatonAttempts, 590 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 39133 SizeOfPredicates, 7 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 17 InterpolantComputations, 16 PerfectInterpolantSequences, 2/3 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...