./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_14-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 04:51:16,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:51:16,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:51:17,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:51:17,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:51:17,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:51:17,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:51:17,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:51:17,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:51:17,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:51:17,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:51:17,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:51:17,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:51:17,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:51:17,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:51:17,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:51:17,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:51:17,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:51:17,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:51:17,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:51:17,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:51:17,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:51:17,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:51:17,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:51:17,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:51:17,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:51:17,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:51:17,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:51:17,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:51:17,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:51:17,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:51:17,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:51:17,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:51:17,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:51:17,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:51:17,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:51:17,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:51:17,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:51:17,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:51:17,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:51:17,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:51:17,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 04:51:17,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:51:17,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:51:17,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:51:17,083 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:51:17,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:51:17,084 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:51:17,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:51:17,084 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:51:17,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:51:17,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:51:17,084 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:51:17,085 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:51:17,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:51:17,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:51:17,085 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:51:17,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 04:51:17,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 04:51:17,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:51:17,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:51:17,086 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 04:51:17,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:51:17,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:51:17,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:51:17,087 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 04:51:17,087 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 04:51:17,087 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 04:51:17,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:51:17,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:51:17,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:51:17,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:51:17,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:51:17,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:51:17,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:51:17,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:51:17,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:51:17,089 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:51:17,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:51:17,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:51:17,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:51:17,090 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 [2020-12-09 04:51:17,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:51:17,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:51:17,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:51:17,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:51:17,287 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:51:17,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_14-1.c [2020-12-09 04:51:17,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/data/97fec33d6/eab594f1582f49a4a884b6af4f376ee8/FLAGc55dbfb54 [2020-12-09 04:51:17,699 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:51:17,699 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/sv-benchmarks/c/locks/test_locks_14-1.c [2020-12-09 04:51:17,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/data/97fec33d6/eab594f1582f49a4a884b6af4f376ee8/FLAGc55dbfb54 [2020-12-09 04:51:17,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/data/97fec33d6/eab594f1582f49a4a884b6af4f376ee8 [2020-12-09 04:51:17,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:51:17,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:51:17,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:51:17,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:51:17,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:51:17,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f2ec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17, skipping insertion in model container [2020-12-09 04:51:17,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:51:17,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:51:17,876 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/sv-benchmarks/c/locks/test_locks_14-1.c[5283,5296] [2020-12-09 04:51:17,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:51:17,886 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:51:17,906 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/sv-benchmarks/c/locks/test_locks_14-1.c[5283,5296] [2020-12-09 04:51:17,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:51:17,918 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:51:17,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17 WrapperNode [2020-12-09 04:51:17,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:51:17,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:51:17,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:51:17,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:51:17,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:51:17,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:51:17,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:51:17,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:51:17,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... [2020-12-09 04:51:17,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:51:17,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:51:17,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:51:17,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:51:17,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/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 [2020-12-09 04:51:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:51:18,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:51:18,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:51:18,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:51:18,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:51:18,442 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 04:51:18,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:51:18 BoogieIcfgContainer [2020-12-09 04:51:18,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:51:18,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:51:18,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:51:18,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:51:18,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:51:17" (1/3) ... [2020-12-09 04:51:18,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd3799e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:51:18, skipping insertion in model container [2020-12-09 04:51:18,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:17" (2/3) ... [2020-12-09 04:51:18,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd3799e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:51:18, skipping insertion in model container [2020-12-09 04:51:18,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:51:18" (3/3) ... [2020-12-09 04:51:18,450 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2020-12-09 04:51:18,460 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:51:18,463 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 04:51:18,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 04:51:18,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:51:18,493 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 04:51:18,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:51:18,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:51:18,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:51:18,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:51:18,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:51:18,494 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:51:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 04:51:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 04:51:18,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 04:51:18,508 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash 9118541, now seen corresponding path program 1 times [2020-12-09 04:51:18,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791300690] [2020-12-09 04:51:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:18,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791300690] [2020-12-09 04:51:18,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:18,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:51:18,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474104190] [2020-12-09 04:51:18,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:51:18,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:18,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:51:18,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:51:18,632 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-09 04:51:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:18,641 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2020-12-09 04:51:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:51:18,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-09 04:51:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:18,649 INFO L225 Difference]: With dead ends: 37 [2020-12-09 04:51:18,649 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 04:51:18,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:51:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 04:51:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-09 04:51:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 04:51:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-12-09 04:51:18,674 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2020-12-09 04:51:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:18,674 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-12-09 04:51:18,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:51:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-12-09 04:51:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:51:18,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:51:18,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:51:18,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash 274635153, now seen corresponding path program 1 times [2020-12-09 04:51:18,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7572617] [2020-12-09 04:51:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:18,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7572617] [2020-12-09 04:51:18,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:18,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 04:51:18,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378257578] [2020-12-09 04:51:18,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:51:18,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:18,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:51:18,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:51:18,715 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 3 states. [2020-12-09 04:51:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:18,719 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2020-12-09 04:51:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:51:18,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 04:51:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:18,720 INFO L225 Difference]: With dead ends: 35 [2020-12-09 04:51:18,720 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 04:51:18,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:51:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 04:51:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 04:51:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2020-12-09 04:51:18,725 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2020-12-09 04:51:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:18,725 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2020-12-09 04:51:18,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:51:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2020-12-09 04:51:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:51:18,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:51:18,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:51:18,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,726 INFO L82 PathProgramCache]: Analyzing trace with hash -67997349, now seen corresponding path program 1 times [2020-12-09 04:51:18,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224507810] [2020-12-09 04:51:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:18,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224507810] [2020-12-09 04:51:18,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:18,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:18,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373512941] [2020-12-09 04:51:18,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:18,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:18,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,775 INFO L87 Difference]: Start difference. First operand 33 states and 60 transitions. Second operand 4 states. [2020-12-09 04:51:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:18,799 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2020-12-09 04:51:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:18,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 04:51:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:18,800 INFO L225 Difference]: With dead ends: 63 [2020-12-09 04:51:18,800 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 04:51:18,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 04:51:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2020-12-09 04:51:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2020-12-09 04:51:18,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2020-12-09 04:51:18,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:18,805 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2020-12-09 04:51:18,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2020-12-09 04:51:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 04:51:18,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:18,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:51:18,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2107705767, now seen corresponding path program 1 times [2020-12-09 04:51:18,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159381508] [2020-12-09 04:51:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:18,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159381508] [2020-12-09 04:51:18,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:18,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:18,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524109775] [2020-12-09 04:51:18,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:18,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,846 INFO L87 Difference]: Start difference. First operand 33 states and 59 transitions. Second operand 4 states. [2020-12-09 04:51:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:18,863 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-12-09 04:51:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:18,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 04:51:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:18,864 INFO L225 Difference]: With dead ends: 61 [2020-12-09 04:51:18,865 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 04:51:18,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 04:51:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 33. [2020-12-09 04:51:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 58 transitions. [2020-12-09 04:51:18,868 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 58 transitions. Word has length 7 [2020-12-09 04:51:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:18,869 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 58 transitions. [2020-12-09 04:51:18,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2020-12-09 04:51:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 04:51:18,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:18,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:51:18,870 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash -914156944, now seen corresponding path program 1 times [2020-12-09 04:51:18,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460072688] [2020-12-09 04:51:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:18,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460072688] [2020-12-09 04:51:18,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:18,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:18,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372214633] [2020-12-09 04:51:18,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:18,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:18,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,914 INFO L87 Difference]: Start difference. First operand 33 states and 58 transitions. Second operand 4 states. [2020-12-09 04:51:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:18,939 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-12-09 04:51:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:18,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 04:51:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:18,940 INFO L225 Difference]: With dead ends: 59 [2020-12-09 04:51:18,940 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 04:51:18,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 04:51:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2020-12-09 04:51:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 57 transitions. [2020-12-09 04:51:18,944 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 57 transitions. Word has length 8 [2020-12-09 04:51:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:18,944 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 57 transitions. [2020-12-09 04:51:18,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 57 transitions. [2020-12-09 04:51:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 04:51:18,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:18,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 04:51:18,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1726118542, now seen corresponding path program 1 times [2020-12-09 04:51:18,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024414385] [2020-12-09 04:51:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:18,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024414385] [2020-12-09 04:51:18,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:18,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:18,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511603354] [2020-12-09 04:51:18,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:18,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:18,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,978 INFO L87 Difference]: Start difference. First operand 33 states and 57 transitions. Second operand 4 states. [2020-12-09 04:51:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:18,992 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-12-09 04:51:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:18,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 04:51:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:18,993 INFO L225 Difference]: With dead ends: 57 [2020-12-09 04:51:18,993 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 04:51:18,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 04:51:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-09 04:51:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2020-12-09 04:51:18,997 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 9 [2020-12-09 04:51:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:18,997 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2020-12-09 04:51:18,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2020-12-09 04:51:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 04:51:18,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:18,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:18,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 04:51:18,998 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1970280325, now seen corresponding path program 1 times [2020-12-09 04:51:18,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:18,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667652215] [2020-12-09 04:51:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667652215] [2020-12-09 04:51:19,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298716160] [2020-12-09 04:51:19,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,030 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand 4 states. [2020-12-09 04:51:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,045 INFO L93 Difference]: Finished difference Result 55 states and 94 transitions. [2020-12-09 04:51:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 04:51:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,046 INFO L225 Difference]: With dead ends: 55 [2020-12-09 04:51:19,046 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 04:51:19,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 04:51:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-12-09 04:51:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 55 transitions. [2020-12-09 04:51:19,050 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 55 transitions. Word has length 10 [2020-12-09 04:51:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,050 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 55 transitions. [2020-12-09 04:51:19,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2020-12-09 04:51:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 04:51:19,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 04:51:19,051 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash 949361347, now seen corresponding path program 1 times [2020-12-09 04:51:19,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26080276] [2020-12-09 04:51:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26080276] [2020-12-09 04:51:19,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860377365] [2020-12-09 04:51:19,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,090 INFO L87 Difference]: Start difference. First operand 33 states and 55 transitions. Second operand 4 states. [2020-12-09 04:51:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,105 INFO L93 Difference]: Finished difference Result 53 states and 89 transitions. [2020-12-09 04:51:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 04:51:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,107 INFO L225 Difference]: With dead ends: 53 [2020-12-09 04:51:19,107 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 04:51:19,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 04:51:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2020-12-09 04:51:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2020-12-09 04:51:19,111 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 11 [2020-12-09 04:51:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,111 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2020-12-09 04:51:19,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2020-12-09 04:51:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 04:51:19,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 04:51:19,112 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,113 INFO L82 PathProgramCache]: Analyzing trace with hash -634355558, now seen corresponding path program 1 times [2020-12-09 04:51:19,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790931135] [2020-12-09 04:51:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790931135] [2020-12-09 04:51:19,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558556520] [2020-12-09 04:51:19,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,151 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 4 states. [2020-12-09 04:51:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,165 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2020-12-09 04:51:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 04:51:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,166 INFO L225 Difference]: With dead ends: 51 [2020-12-09 04:51:19,167 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 04:51:19,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 04:51:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-12-09 04:51:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 53 transitions. [2020-12-09 04:51:19,170 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 53 transitions. Word has length 12 [2020-12-09 04:51:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,170 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 53 transitions. [2020-12-09 04:51:19,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 53 transitions. [2020-12-09 04:51:19,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 04:51:19,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 04:51:19,172 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1810028280, now seen corresponding path program 1 times [2020-12-09 04:51:19,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637872162] [2020-12-09 04:51:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637872162] [2020-12-09 04:51:19,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947178372] [2020-12-09 04:51:19,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,206 INFO L87 Difference]: Start difference. First operand 33 states and 53 transitions. Second operand 4 states. [2020-12-09 04:51:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,218 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2020-12-09 04:51:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 04:51:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,220 INFO L225 Difference]: With dead ends: 49 [2020-12-09 04:51:19,220 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 04:51:19,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 04:51:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2020-12-09 04:51:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 52 transitions. [2020-12-09 04:51:19,223 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 52 transitions. Word has length 13 [2020-12-09 04:51:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,223 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 52 transitions. [2020-12-09 04:51:19,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,224 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 52 transitions. [2020-12-09 04:51:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 04:51:19,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 04:51:19,225 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash 276516271, now seen corresponding path program 1 times [2020-12-09 04:51:19,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856619031] [2020-12-09 04:51:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856619031] [2020-12-09 04:51:19,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332363843] [2020-12-09 04:51:19,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,259 INFO L87 Difference]: Start difference. First operand 33 states and 52 transitions. Second operand 4 states. [2020-12-09 04:51:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,274 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-12-09 04:51:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 04:51:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,275 INFO L225 Difference]: With dead ends: 47 [2020-12-09 04:51:19,275 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 04:51:19,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 04:51:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2020-12-09 04:51:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-09 04:51:19,279 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-12-09 04:51:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,279 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-09 04:51:19,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-09 04:51:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 04:51:19,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 04:51:19,280 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash -17715411, now seen corresponding path program 1 times [2020-12-09 04:51:19,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95007204] [2020-12-09 04:51:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95007204] [2020-12-09 04:51:19,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365021948] [2020-12-09 04:51:19,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,312 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-09 04:51:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,325 INFO L93 Difference]: Finished difference Result 45 states and 69 transitions. [2020-12-09 04:51:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 04:51:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,326 INFO L225 Difference]: With dead ends: 45 [2020-12-09 04:51:19,326 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 04:51:19,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 04:51:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2020-12-09 04:51:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-12-09 04:51:19,329 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 15 [2020-12-09 04:51:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,329 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-12-09 04:51:19,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-12-09 04:51:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 04:51:19,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 04:51:19,330 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash -548962620, now seen corresponding path program 1 times [2020-12-09 04:51:19,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512420680] [2020-12-09 04:51:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512420680] [2020-12-09 04:51:19,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533013995] [2020-12-09 04:51:19,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,354 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-12-09 04:51:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,367 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2020-12-09 04:51:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 04:51:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,368 INFO L225 Difference]: With dead ends: 43 [2020-12-09 04:51:19,368 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 04:51:19,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 04:51:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-12-09 04:51:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2020-12-09 04:51:19,370 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 16 [2020-12-09 04:51:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,370 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2020-12-09 04:51:19,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2020-12-09 04:51:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 04:51:19,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 04:51:19,371 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash 162243426, now seen corresponding path program 1 times [2020-12-09 04:51:19,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342130398] [2020-12-09 04:51:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342130398] [2020-12-09 04:51:19,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273940836] [2020-12-09 04:51:19,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,397 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 4 states. [2020-12-09 04:51:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,410 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-12-09 04:51:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 04:51:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,411 INFO L225 Difference]: With dead ends: 41 [2020-12-09 04:51:19,411 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 04:51:19,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 04:51:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-12-09 04:51:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 48 transitions. [2020-12-09 04:51:19,413 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 48 transitions. Word has length 17 [2020-12-09 04:51:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,413 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 48 transitions. [2020-12-09 04:51:19,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2020-12-09 04:51:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 04:51:19,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 04:51:19,414 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash 734794713, now seen corresponding path program 1 times [2020-12-09 04:51:19,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791170398] [2020-12-09 04:51:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791170398] [2020-12-09 04:51:19,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235660937] [2020-12-09 04:51:19,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,437 INFO L87 Difference]: Start difference. First operand 33 states and 48 transitions. Second operand 4 states. [2020-12-09 04:51:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,449 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2020-12-09 04:51:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 04:51:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,450 INFO L225 Difference]: With dead ends: 39 [2020-12-09 04:51:19,450 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 04:51:19,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 04:51:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-12-09 04:51:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2020-12-09 04:51:19,452 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 18 [2020-12-09 04:51:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,452 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2020-12-09 04:51:19,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2020-12-09 04:51:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 04:51:19,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:19,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:19,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 04:51:19,453 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 04:51:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1304015767, now seen corresponding path program 1 times [2020-12-09 04:51:19,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:19,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635364583] [2020-12-09 04:51:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:19,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635364583] [2020-12-09 04:51:19,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:19,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:19,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094733888] [2020-12-09 04:51:19,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:19,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:19,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:19,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,476 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand 4 states. [2020-12-09 04:51:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:19,488 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-12-09 04:51:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:19,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-09 04:51:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:19,488 INFO L225 Difference]: With dead ends: 33 [2020-12-09 04:51:19,488 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:51:19,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:51:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:51:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:51:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:51:19,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-09 04:51:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:19,489 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:51:19,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:51:19,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:51:19,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 04:51:19,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:51:19 BoogieIcfgContainer [2020-12-09 04:51:19,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:51:19,493 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:51:19,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:51:19,493 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:51:19,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:51:18" (3/4) ... [2020-12-09 04:51:19,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:51:19,504 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 04:51:19,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 04:51:19,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 04:51:19,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:51:19,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_caf4f516-01a2-48a1-bd12-641616b33c17/bin/utaipan/witness.graphml [2020-12-09 04:51:19,548 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:51:19,549 INFO L168 Benchmark]: Toolchain (without parser) took 1830.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 57.5 MB in the beginning and 46.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:19,550 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 73.6 MB in the end (delta: 65.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:51:19,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.15 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 71.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:19,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.36 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:51:19,551 INFO L168 Benchmark]: Boogie Preprocessor took 18.83 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:19,551 INFO L168 Benchmark]: RCFGBuilder took 475.23 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.1 MB in the beginning and 82.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:19,551 INFO L168 Benchmark]: TraceAbstraction took 1047.94 ms. Allocated memory is still 117.4 MB. Free memory was 81.9 MB in the beginning and 51.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:19,552 INFO L168 Benchmark]: Witness Printer took 55.41 ms. Allocated memory is still 117.4 MB. Free memory was 51.1 MB in the beginning and 46.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:19,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 73.6 MB in the end (delta: 65.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 199.15 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 71.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.36 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.83 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 475.23 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.1 MB in the beginning and 82.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1047.94 ms. Allocated memory is still 117.4 MB. Free memory was 81.9 MB in the beginning and 51.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * Witness Printer took 55.41 ms. Allocated memory is still 117.4 MB. Free memory was 51.1 MB in the beginning and 46.9 MB in the end (delta: 4.2 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: 219]: 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 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 832 SDtfs, 659 SDslu, 1055 SDs, 0 SdLazy, 126 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 234 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 11068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...