./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:26:01,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:26:01,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:26:01,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:26:01,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:26:01,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:26:01,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:26:01,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:26:01,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:26:01,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:26:01,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:26:01,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:26:01,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:26:01,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:26:01,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:26:01,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:26:01,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:26:01,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:26:01,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:26:01,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:26:01,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:26:01,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:26:01,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:26:01,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:26:01,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:26:01,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:26:01,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:26:01,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:26:01,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:26:01,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:26:01,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:26:01,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:26:01,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:26:01,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:26:01,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:26:01,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:26:01,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:26:01,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:26:01,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:26:01,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:26:01,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:26:01,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 20:26:01,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:26:01,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:26:01,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:26:01,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:26:01,978 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:26:01,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:26:01,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:26:01,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:26:01,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:26:01,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:26:01,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:26:01,981 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:26:01,982 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:26:01,982 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:26:01,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:26:01,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:26:01,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:26:01,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:26:01,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:26:01,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:26:01,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:26:01,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:26:01,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:26:01,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:26:01,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:26:01,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:26:01,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:26:01,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:26:01,987 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_254c145d-0932-4959-a48f-f5346cd4e620/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2020-11-29 20:26:02,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:26:02,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:26:02,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:26:02,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:26:02,358 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:26:02,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_6.c [2020-11-29 20:26:02,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/data/967c3f053/19abca1e6afc44a39ac5c705bc13d98f/FLAGe8776e651 [2020-11-29 20:26:03,036 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:26:03,043 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/sv-benchmarks/c/locks/test_locks_6.c [2020-11-29 20:26:03,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/data/967c3f053/19abca1e6afc44a39ac5c705bc13d98f/FLAGe8776e651 [2020-11-29 20:26:03,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/data/967c3f053/19abca1e6afc44a39ac5c705bc13d98f [2020-11-29 20:26:03,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:26:03,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:26:03,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:03,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:26:03,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:26:03,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6349ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03, skipping insertion in model container [2020-11-29 20:26:03,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:26:03,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:26:03,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:03,682 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:26:03,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:03,764 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:26:03,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03 WrapperNode [2020-11-29 20:26:03,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:03,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:26:03,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:26:03,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:26:03,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... [2020-11-29 20:26:03,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:26:03,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:26:03,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:26:03,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:26:03,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/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 20:26:03,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:26:03,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:26:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 20:26:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:26:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 20:26:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 20:26:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 20:26:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:26:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 20:26:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:26:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:26:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:26:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:26:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:26:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:26:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:26:04,574 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:26:04,575 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 20:26:04,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:04 BoogieIcfgContainer [2020-11-29 20:26:04,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:26:04,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:26:04,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:26:04,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:26:04,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:26:03" (1/3) ... [2020-11-29 20:26:04,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d0e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:04, skipping insertion in model container [2020-11-29 20:26:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:03" (2/3) ... [2020-11-29 20:26:04,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d0e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:04, skipping insertion in model container [2020-11-29 20:26:04,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:04" (3/3) ... [2020-11-29 20:26:04,593 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-11-29 20:26:04,607 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:26:04,612 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:26:04,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 20:26:04,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:26:04,654 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:26:04,655 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:26:04,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:26:04,655 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:26:04,655 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:26:04,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:26:04,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:26:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 20:26:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:26:04,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:04,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:04,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash -214899584, now seen corresponding path program 1 times [2020-11-29 20:26:04,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:04,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221724495] [2020-11-29 20:26:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,075 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 20:26:05,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221724495] [2020-11-29 20:26:05,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:05,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:26:05,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335526879] [2020-11-29 20:26:05,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:26:05,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:05,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:26:05,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:26:05,107 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-11-29 20:26:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:05,159 INFO L93 Difference]: Finished difference Result 34 states and 51 transitions. [2020-11-29 20:26:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:26:05,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 20:26:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:05,173 INFO L225 Difference]: With dead ends: 34 [2020-11-29 20:26:05,173 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 20:26:05,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:26:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 20:26:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 20:26:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 20:26:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 46 transitions. [2020-11-29 20:26:05,224 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 46 transitions. Word has length 9 [2020-11-29 20:26:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:05,225 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 46 transitions. [2020-11-29 20:26:05,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:26:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2020-11-29 20:26:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:26:05,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:05,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:05,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:26:05,228 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:05,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2113178603, now seen corresponding path program 1 times [2020-11-29 20:26:05,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:05,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738485994] [2020-11-29 20:26:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,440 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 20:26:05,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738485994] [2020-11-29 20:26:05,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:05,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:05,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581658271] [2020-11-29 20:26:05,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:05,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:05,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:05,450 INFO L87 Difference]: Start difference. First operand 29 states and 46 transitions. Second operand 4 states. [2020-11-29 20:26:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:05,697 INFO L93 Difference]: Finished difference Result 49 states and 82 transitions. [2020-11-29 20:26:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:05,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 20:26:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:05,701 INFO L225 Difference]: With dead ends: 49 [2020-11-29 20:26:05,701 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:26:05,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:26:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2020-11-29 20:26:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:26:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 59 transitions. [2020-11-29 20:26:05,724 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 59 transitions. Word has length 18 [2020-11-29 20:26:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:05,725 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 59 transitions. [2020-11-29 20:26:05,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 59 transitions. [2020-11-29 20:26:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:26:05,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:05,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:05,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:26:05,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:05,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:05,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1788761683, now seen corresponding path program 1 times [2020-11-29 20:26:05,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:05,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471603322] [2020-11-29 20:26:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,896 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 20:26:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471603322] [2020-11-29 20:26:05,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:05,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:05,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630936668] [2020-11-29 20:26:05,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:05,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:05,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:05,899 INFO L87 Difference]: Start difference. First operand 36 states and 59 transitions. Second operand 4 states. [2020-11-29 20:26:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,081 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2020-11-29 20:26:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 20:26:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,083 INFO L225 Difference]: With dead ends: 49 [2020-11-29 20:26:06,084 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:26:06,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:26:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-11-29 20:26:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 20:26:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 79 transitions. [2020-11-29 20:26:06,092 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 79 transitions. Word has length 18 [2020-11-29 20:26:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,093 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 79 transitions. [2020-11-29 20:26:06,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 79 transitions. [2020-11-29 20:26:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:26:06,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,095 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 20:26:06,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:26:06,095 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1077379613, now seen corresponding path program 1 times [2020-11-29 20:26:06,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797951097] [2020-11-29 20:26:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,182 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 20:26:06,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797951097] [2020-11-29 20:26:06,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:06,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:06,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362022413] [2020-11-29 20:26:06,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:06,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:06,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:06,191 INFO L87 Difference]: Start difference. First operand 48 states and 79 transitions. Second operand 4 states. [2020-11-29 20:26:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,372 INFO L93 Difference]: Finished difference Result 52 states and 82 transitions. [2020-11-29 20:26:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 20:26:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,374 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:26:06,374 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 20:26:06,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 20:26:06,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-29 20:26:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 20:26:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 81 transitions. [2020-11-29 20:26:06,383 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 81 transitions. Word has length 19 [2020-11-29 20:26:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,384 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 81 transitions. [2020-11-29 20:26:06,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 81 transitions. [2020-11-29 20:26:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:26:06,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,385 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 20:26:06,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:26:06,386 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash -376315035, now seen corresponding path program 1 times [2020-11-29 20:26:06,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099628255] [2020-11-29 20:26:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,511 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 20:26:06,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099628255] [2020-11-29 20:26:06,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:06,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:06,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892117743] [2020-11-29 20:26:06,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:06,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:06,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:06,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:06,517 INFO L87 Difference]: Start difference. First operand 51 states and 81 transitions. Second operand 4 states. [2020-11-29 20:26:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,691 INFO L93 Difference]: Finished difference Result 89 states and 143 transitions. [2020-11-29 20:26:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 20:26:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,693 INFO L225 Difference]: With dead ends: 89 [2020-11-29 20:26:06,693 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 20:26:06,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 20:26:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-11-29 20:26:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 20:26:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 142 transitions. [2020-11-29 20:26:06,715 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 142 transitions. Word has length 19 [2020-11-29 20:26:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,716 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 142 transitions. [2020-11-29 20:26:06,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 142 transitions. [2020-11-29 20:26:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:26:06,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,719 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 20:26:06,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:26:06,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash 16711975, now seen corresponding path program 1 times [2020-11-29 20:26:06,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255339691] [2020-11-29 20:26:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,829 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 20:26:06,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255339691] [2020-11-29 20:26:06,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:06,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:06,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248079680] [2020-11-29 20:26:06,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:06,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:06,847 INFO L87 Difference]: Start difference. First operand 88 states and 142 transitions. Second operand 4 states. [2020-11-29 20:26:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,996 INFO L93 Difference]: Finished difference Result 109 states and 177 transitions. [2020-11-29 20:26:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 20:26:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,999 INFO L225 Difference]: With dead ends: 109 [2020-11-29 20:26:06,999 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 20:26:06,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 20:26:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2020-11-29 20:26:07,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 20:26:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 140 transitions. [2020-11-29 20:26:07,009 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 140 transitions. Word has length 19 [2020-11-29 20:26:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:07,010 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 140 transitions. [2020-11-29 20:26:07,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 140 transitions. [2020-11-29 20:26:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:26:07,011 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:07,012 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 20:26:07,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:26:07,012 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:07,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1225794014, now seen corresponding path program 1 times [2020-11-29 20:26:07,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:07,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781637645] [2020-11-29 20:26:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,083 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 20:26:07,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781637645] [2020-11-29 20:26:07,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:07,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:07,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165160067] [2020-11-29 20:26:07,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:07,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:07,086 INFO L87 Difference]: Start difference. First operand 88 states and 140 transitions. Second operand 4 states. [2020-11-29 20:26:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:07,258 INFO L93 Difference]: Finished difference Result 153 states and 247 transitions. [2020-11-29 20:26:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:07,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 20:26:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:07,260 INFO L225 Difference]: With dead ends: 153 [2020-11-29 20:26:07,260 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 20:26:07,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 20:26:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-11-29 20:26:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 20:26:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 190 transitions. [2020-11-29 20:26:07,281 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 190 transitions. Word has length 20 [2020-11-29 20:26:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:07,282 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 190 transitions. [2020-11-29 20:26:07,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 190 transitions. [2020-11-29 20:26:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:26:07,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:07,285 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 20:26:07,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:26:07,286 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:07,286 INFO L82 PathProgramCache]: Analyzing trace with hash 832767004, now seen corresponding path program 1 times [2020-11-29 20:26:07,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:07,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251202108] [2020-11-29 20:26:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,384 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 20:26:07,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251202108] [2020-11-29 20:26:07,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:07,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:07,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009811507] [2020-11-29 20:26:07,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:07,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:07,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:07,390 INFO L87 Difference]: Start difference. First operand 120 states and 190 transitions. Second operand 4 states. [2020-11-29 20:26:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:07,565 INFO L93 Difference]: Finished difference Result 161 states and 249 transitions. [2020-11-29 20:26:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:07,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 20:26:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:07,567 INFO L225 Difference]: With dead ends: 161 [2020-11-29 20:26:07,568 INFO L226 Difference]: Without dead ends: 161 [2020-11-29 20:26:07,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-29 20:26:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-11-29 20:26:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-29 20:26:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 248 transitions. [2020-11-29 20:26:07,599 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 248 transitions. Word has length 20 [2020-11-29 20:26:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:07,599 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 248 transitions. [2020-11-29 20:26:07,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:07,600 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 248 transitions. [2020-11-29 20:26:07,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:26:07,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:07,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:07,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:26:07,602 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:07,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:07,603 INFO L82 PathProgramCache]: Analyzing trace with hash -648422448, now seen corresponding path program 1 times [2020-11-29 20:26:07,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:07,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492537327] [2020-11-29 20:26:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,694 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 20:26:07,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492537327] [2020-11-29 20:26:07,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:07,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:07,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553606992] [2020-11-29 20:26:07,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:07,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:07,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:07,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:07,705 INFO L87 Difference]: Start difference. First operand 160 states and 248 transitions. Second operand 4 states. [2020-11-29 20:26:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:07,866 INFO L93 Difference]: Finished difference Result 167 states and 253 transitions. [2020-11-29 20:26:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:07,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-29 20:26:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:07,869 INFO L225 Difference]: With dead ends: 167 [2020-11-29 20:26:07,869 INFO L226 Difference]: Without dead ends: 167 [2020-11-29 20:26:07,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-29 20:26:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2020-11-29 20:26:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-29 20:26:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 252 transitions. [2020-11-29 20:26:07,879 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 252 transitions. Word has length 21 [2020-11-29 20:26:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:07,879 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 252 transitions. [2020-11-29 20:26:07,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 252 transitions. [2020-11-29 20:26:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:26:07,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:07,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:07,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:26:07,882 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:07,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:07,883 INFO L82 PathProgramCache]: Analyzing trace with hash 52642130, now seen corresponding path program 1 times [2020-11-29 20:26:07,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:07,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524374069] [2020-11-29 20:26:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:26:07,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524374069] [2020-11-29 20:26:07,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:07,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:07,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39189100] [2020-11-29 20:26:07,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:07,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:07,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:07,970 INFO L87 Difference]: Start difference. First operand 166 states and 252 transitions. Second operand 4 states. [2020-11-29 20:26:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:08,133 INFO L93 Difference]: Finished difference Result 283 states and 429 transitions. [2020-11-29 20:26:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:08,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-29 20:26:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:08,136 INFO L225 Difference]: With dead ends: 283 [2020-11-29 20:26:08,136 INFO L226 Difference]: Without dead ends: 283 [2020-11-29 20:26:08,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-29 20:26:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2020-11-29 20:26:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 20:26:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 348 transitions. [2020-11-29 20:26:08,147 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 348 transitions. Word has length 21 [2020-11-29 20:26:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:08,147 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 348 transitions. [2020-11-29 20:26:08,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 348 transitions. [2020-11-29 20:26:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:26:08,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:08,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:08,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:26:08,158 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:08,159 INFO L82 PathProgramCache]: Analyzing trace with hash -340384880, now seen corresponding path program 1 times [2020-11-29 20:26:08,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:08,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652322805] [2020-11-29 20:26:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:08,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:08,246 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 20:26:08,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652322805] [2020-11-29 20:26:08,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:08,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:08,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218322071] [2020-11-29 20:26:08,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:08,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:08,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:08,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:08,252 INFO L87 Difference]: Start difference. First operand 234 states and 348 transitions. Second operand 4 states. [2020-11-29 20:26:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:08,409 INFO L93 Difference]: Finished difference Result 307 states and 441 transitions. [2020-11-29 20:26:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:08,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-29 20:26:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:08,412 INFO L225 Difference]: With dead ends: 307 [2020-11-29 20:26:08,413 INFO L226 Difference]: Without dead ends: 307 [2020-11-29 20:26:08,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-29 20:26:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2020-11-29 20:26:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-11-29 20:26:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 440 transitions. [2020-11-29 20:26:08,429 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 440 transitions. Word has length 21 [2020-11-29 20:26:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:08,429 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 440 transitions. [2020-11-29 20:26:08,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 440 transitions. [2020-11-29 20:26:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:26:08,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:08,438 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 20:26:08,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:26:08,439 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:08,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:08,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1638585383, now seen corresponding path program 1 times [2020-11-29 20:26:08,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:08,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059059077] [2020-11-29 20:26:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:08,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:08,517 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 20:26:08,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059059077] [2020-11-29 20:26:08,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:08,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:08,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950095019] [2020-11-29 20:26:08,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:08,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:08,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:08,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:08,522 INFO L87 Difference]: Start difference. First operand 306 states and 440 transitions. Second operand 4 states. [2020-11-29 20:26:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:08,679 INFO L93 Difference]: Finished difference Result 315 states and 441 transitions. [2020-11-29 20:26:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:08,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 20:26:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:08,682 INFO L225 Difference]: With dead ends: 315 [2020-11-29 20:26:08,683 INFO L226 Difference]: Without dead ends: 315 [2020-11-29 20:26:08,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-11-29 20:26:08,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314. [2020-11-29 20:26:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-11-29 20:26:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 440 transitions. [2020-11-29 20:26:08,694 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 440 transitions. Word has length 22 [2020-11-29 20:26:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:08,694 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 440 transitions. [2020-11-29 20:26:08,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:08,695 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 440 transitions. [2020-11-29 20:26:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:26:08,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:08,696 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 20:26:08,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 20:26:08,696 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:08,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1955317335, now seen corresponding path program 1 times [2020-11-29 20:26:08,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:08,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235888818] [2020-11-29 20:26:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:08,786 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 20:26:08,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235888818] [2020-11-29 20:26:08,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:08,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:08,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255812097] [2020-11-29 20:26:08,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:08,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:08,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:08,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:08,789 INFO L87 Difference]: Start difference. First operand 314 states and 440 transitions. Second operand 4 states. [2020-11-29 20:26:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:08,937 INFO L93 Difference]: Finished difference Result 523 states and 721 transitions. [2020-11-29 20:26:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:08,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 20:26:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:08,941 INFO L225 Difference]: With dead ends: 523 [2020-11-29 20:26:08,941 INFO L226 Difference]: Without dead ends: 523 [2020-11-29 20:26:08,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-11-29 20:26:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 458. [2020-11-29 20:26:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-11-29 20:26:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 624 transitions. [2020-11-29 20:26:08,961 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 624 transitions. Word has length 22 [2020-11-29 20:26:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:08,961 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 624 transitions. [2020-11-29 20:26:08,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 624 transitions. [2020-11-29 20:26:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:26:08,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:08,964 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 20:26:08,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 20:26:08,965 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1946622951, now seen corresponding path program 1 times [2020-11-29 20:26:08,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:08,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160633449] [2020-11-29 20:26:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,042 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 20:26:09,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160633449] [2020-11-29 20:26:09,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:09,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:09,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764793162] [2020-11-29 20:26:09,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:09,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:09,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:09,044 INFO L87 Difference]: Start difference. First operand 458 states and 624 transitions. Second operand 4 states. [2020-11-29 20:26:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:09,201 INFO L93 Difference]: Finished difference Result 587 states and 761 transitions. [2020-11-29 20:26:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:09,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 20:26:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:09,206 INFO L225 Difference]: With dead ends: 587 [2020-11-29 20:26:09,206 INFO L226 Difference]: Without dead ends: 587 [2020-11-29 20:26:09,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-11-29 20:26:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 586. [2020-11-29 20:26:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-29 20:26:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 760 transitions. [2020-11-29 20:26:09,230 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 760 transitions. Word has length 22 [2020-11-29 20:26:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:09,230 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 760 transitions. [2020-11-29 20:26:09,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 760 transitions. [2020-11-29 20:26:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 20:26:09,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:09,232 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] [2020-11-29 20:26:09,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 20:26:09,233 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -478605317, now seen corresponding path program 1 times [2020-11-29 20:26:09,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:09,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73081456] [2020-11-29 20:26:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,304 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 20:26:09,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73081456] [2020-11-29 20:26:09,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:09,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:09,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631098041] [2020-11-29 20:26:09,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:09,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:09,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:09,306 INFO L87 Difference]: Start difference. First operand 586 states and 760 transitions. Second operand 4 states. [2020-11-29 20:26:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:09,445 INFO L93 Difference]: Finished difference Result 603 states and 761 transitions. [2020-11-29 20:26:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:09,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 20:26:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:09,450 INFO L225 Difference]: With dead ends: 603 [2020-11-29 20:26:09,450 INFO L226 Difference]: Without dead ends: 603 [2020-11-29 20:26:09,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-11-29 20:26:09,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 602. [2020-11-29 20:26:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-11-29 20:26:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 760 transitions. [2020-11-29 20:26:09,474 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 760 transitions. Word has length 23 [2020-11-29 20:26:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:09,474 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 760 transitions. [2020-11-29 20:26:09,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 760 transitions. [2020-11-29 20:26:09,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 20:26:09,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:09,476 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] [2020-11-29 20:26:09,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 20:26:09,476 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:09,477 INFO L82 PathProgramCache]: Analyzing trace with hash 222459261, now seen corresponding path program 1 times [2020-11-29 20:26:09,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:09,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474980234] [2020-11-29 20:26:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,547 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 20:26:09,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474980234] [2020-11-29 20:26:09,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:09,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:09,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187727408] [2020-11-29 20:26:09,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:09,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:09,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:09,549 INFO L87 Difference]: Start difference. First operand 602 states and 760 transitions. Second operand 4 states. [2020-11-29 20:26:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:09,722 INFO L93 Difference]: Finished difference Result 970 states and 1176 transitions. [2020-11-29 20:26:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:09,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 20:26:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:09,730 INFO L225 Difference]: With dead ends: 970 [2020-11-29 20:26:09,731 INFO L226 Difference]: Without dead ends: 970 [2020-11-29 20:26:09,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-11-29 20:26:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 906. [2020-11-29 20:26:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-11-29 20:26:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1112 transitions. [2020-11-29 20:26:09,765 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1112 transitions. Word has length 23 [2020-11-29 20:26:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:09,765 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1112 transitions. [2020-11-29 20:26:09,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1112 transitions. [2020-11-29 20:26:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 20:26:09,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:09,788 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] [2020-11-29 20:26:09,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 20:26:09,789 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 20:26:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:09,790 INFO L82 PathProgramCache]: Analyzing trace with hash -170567749, now seen corresponding path program 1 times [2020-11-29 20:26:09,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:09,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140370909] [2020-11-29 20:26:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:26:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:09,866 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 20:26:09,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140370909] [2020-11-29 20:26:09,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:09,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:09,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338532173] [2020-11-29 20:26:09,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:09,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:09,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:09,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:09,868 INFO L87 Difference]: Start difference. First operand 906 states and 1112 transitions. Second operand 4 states. [2020-11-29 20:26:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:10,011 INFO L93 Difference]: Finished difference Result 1127 states and 1286 transitions. [2020-11-29 20:26:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:10,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 20:26:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:10,013 INFO L225 Difference]: With dead ends: 1127 [2020-11-29 20:26:10,013 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:26:10,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:26:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:26:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:26:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:26:10,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-29 20:26:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:10,014 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:26:10,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:26:10,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:26:10,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 20:26:10,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:26:10 BoogieIcfgContainer [2020-11-29 20:26:10,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:26:10,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:26:10,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:26:10,023 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:26:10,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:04" (3/4) ... [2020-11-29 20:26:10,028 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:26:10,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-29 20:26:10,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 20:26:10,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 20:26:10,050 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 20:26:10,050 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:26:10,050 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 20:26:10,051 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:26:10,107 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_254c145d-0932-4959-a48f-f5346cd4e620/bin/uautomizer/witness.graphml [2020-11-29 20:26:10,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:26:10,109 INFO L168 Benchmark]: Toolchain (without parser) took 6741.29 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 68.0 MB in the beginning and 89.3 MB in the end (delta: -21.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:10,110 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 96.5 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:26:10,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.52 ms. Allocated memory is still 96.5 MB. Free memory was 67.8 MB in the beginning and 73.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:10,112 INFO L168 Benchmark]: Boogie Preprocessor took 80.94 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:10,112 INFO L168 Benchmark]: RCFGBuilder took 727.48 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 55.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:10,113 INFO L168 Benchmark]: TraceAbstraction took 5442.98 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 54.8 MB in the beginning and 92.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:10,113 INFO L168 Benchmark]: Witness Printer took 84.99 ms. Allocated memory is still 142.6 MB. Free memory was 92.5 MB in the beginning and 89.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:10,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 96.5 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.52 ms. Allocated memory is still 96.5 MB. Free memory was 67.8 MB in the beginning and 73.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.94 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 727.48 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 55.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5442.98 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 54.8 MB in the beginning and 92.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Witness Printer took 84.99 ms. Allocated memory is still 142.6 MB. Free memory was 92.5 MB in the beginning and 89.3 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: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 934 SDtfs, 1243 SDslu, 124 SDs, 0 SdLazy, 642 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=906occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 254 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 20501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...