./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_8.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_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/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 37d0ed05d77a0379c9ed98058bf2f327252773ce .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:01:38,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:01:38,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:01:38,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:01:38,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:01:38,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:01:38,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:01:38,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:01:38,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:01:38,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:01:38,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:01:38,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:01:38,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:01:38,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:01:38,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:01:38,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:01:38,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:01:38,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:01:38,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:01:38,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:01:38,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:01:38,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:01:38,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:01:38,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:01:38,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:01:38,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:01:38,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:01:38,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:01:38,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:01:38,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:01:38,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:01:38,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:01:38,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:01:38,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:01:38,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:01:38,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:01:38,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:01:38,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:01:38,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:01:38,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:01:38,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:01:38,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 05:01:38,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:01:38,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:01:38,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:01:38,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:01:38,223 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:01:38,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:01:38,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:01:38,224 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:01:38,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 05:01:38,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 05:01:38,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:01:38,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:01:38,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:01:38,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:01:38,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:01:38,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:01:38,227 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_a611e5ab-3cdf-4227-9b61-08a9ef54499c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-12-09 05:01:38,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:01:38,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:01:38,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:01:38,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:01:38,441 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:01:38,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_8.c [2020-12-09 05:01:38,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/data/fa58da7a8/c19df1e2b1724393b63059a989e4ac35/FLAGc4bc9ebc3 [2020-12-09 05:01:38,873 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:01:38,873 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/sv-benchmarks/c/locks/test_locks_8.c [2020-12-09 05:01:38,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/data/fa58da7a8/c19df1e2b1724393b63059a989e4ac35/FLAGc4bc9ebc3 [2020-12-09 05:01:38,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/data/fa58da7a8/c19df1e2b1724393b63059a989e4ac35 [2020-12-09 05:01:38,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:01:38,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:01:38,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:01:38,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:01:38,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:01:38,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:01:38" (1/1) ... [2020-12-09 05:01:38,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c63fbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:38, skipping insertion in model container [2020-12-09 05:01:38,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:01:38" (1/1) ... [2020-12-09 05:01:38,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:01:38,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:01:39,021 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_a611e5ab-3cdf-4227-9b61-08a9ef54499c/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2020-12-09 05:01:39,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:01:39,030 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:01:39,045 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_a611e5ab-3cdf-4227-9b61-08a9ef54499c/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2020-12-09 05:01:39,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:01:39,056 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:01:39,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39 WrapperNode [2020-12-09 05:01:39,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:01:39,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:01:39,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:01:39,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:01:39,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:01:39,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:01:39,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:01:39,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:01:39,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... [2020-12-09 05:01:39,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:01:39,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:01:39,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:01:39,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:01:39,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/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 05:01:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:01:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:01:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:01:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:01:39,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:01:39,476 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 05:01:39,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:01:39 BoogieIcfgContainer [2020-12-09 05:01:39,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:01:39,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:01:39,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:01:39,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:01:39,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:01:38" (1/3) ... [2020-12-09 05:01:39,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fe3456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:01:39, skipping insertion in model container [2020-12-09 05:01:39,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:39" (2/3) ... [2020-12-09 05:01:39,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fe3456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:01:39, skipping insertion in model container [2020-12-09 05:01:39,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:01:39" (3/3) ... [2020-12-09 05:01:39,484 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-12-09 05:01:39,493 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:01:39,496 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 05:01:39,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 05:01:39,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:01:39,517 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 05:01:39,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:01:39,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:01:39,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:01:39,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:01:39,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:01:39,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:01:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-09 05:01:39,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 05:01:39,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:39,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 05:01:39,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash 5986261, now seen corresponding path program 1 times [2020-12-09 05:01:39,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:39,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477470438] [2020-12-09 05:01:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:39,655 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 05:01:39,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477470438] [2020-12-09 05:01:39,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:39,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:01:39,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233721435] [2020-12-09 05:01:39,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:01:39,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:39,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:01:39,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:01:39,671 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-09 05:01:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:39,680 INFO L93 Difference]: Finished difference Result 25 states and 40 transitions. [2020-12-09 05:01:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:01:39,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-09 05:01:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:39,687 INFO L225 Difference]: With dead ends: 25 [2020-12-09 05:01:39,688 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 05:01:39,689 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 05:01:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 05:01:39,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-09 05:01:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-09 05:01:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-12-09 05:01:39,713 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 4 [2020-12-09 05:01:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:39,713 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-12-09 05:01:39,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:01:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-12-09 05:01:39,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:01:39,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:39,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:01:39,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:01:39,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:39,715 INFO L82 PathProgramCache]: Analyzing trace with hash 180432747, now seen corresponding path program 1 times [2020-12-09 05:01:39,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:39,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86941621] [2020-12-09 05:01:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:39,763 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 05:01:39,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86941621] [2020-12-09 05:01:39,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:39,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:01:39,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215013904] [2020-12-09 05:01:39,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:01:39,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:39,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:01:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:01:39,767 INFO L87 Difference]: Start difference. First operand 24 states and 39 transitions. Second operand 3 states. [2020-12-09 05:01:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:39,772 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-12-09 05:01:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:01:39,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 05:01:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:39,773 INFO L225 Difference]: With dead ends: 23 [2020-12-09 05:01:39,774 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 05:01:39,774 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 05:01:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 05:01:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 05:01:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 36 transitions. [2020-12-09 05:01:39,778 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 36 transitions. Word has length 5 [2020-12-09 05:01:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:39,779 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 36 transitions. [2020-12-09 05:01:39,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:01:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 36 transitions. [2020-12-09 05:01:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:01:39,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:39,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:01:39,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:01:39,780 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1303364557, now seen corresponding path program 1 times [2020-12-09 05:01:39,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:39,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988112177] [2020-12-09 05:01:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:39,840 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 05:01:39,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988112177] [2020-12-09 05:01:39,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:39,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:39,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13483112] [2020-12-09 05:01:39,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:39,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:39,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:39,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:39,843 INFO L87 Difference]: Start difference. First operand 21 states and 36 transitions. Second operand 4 states. [2020-12-09 05:01:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:39,865 INFO L93 Difference]: Finished difference Result 39 states and 66 transitions. [2020-12-09 05:01:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:39,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 05:01:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:39,867 INFO L225 Difference]: With dead ends: 39 [2020-12-09 05:01:39,867 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 05:01:39,868 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 05:01:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 05:01:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 21. [2020-12-09 05:01:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2020-12-09 05:01:39,872 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 6 [2020-12-09 05:01:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:39,872 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2020-12-09 05:01:39,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2020-12-09 05:01:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:01:39,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:39,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:39,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:01:39,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1749809599, now seen corresponding path program 1 times [2020-12-09 05:01:39,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:39,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125981834] [2020-12-09 05:01:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:39,917 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 05:01:39,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125981834] [2020-12-09 05:01:39,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:39,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:39,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858760558] [2020-12-09 05:01:39,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:39,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:39,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:39,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:39,920 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 4 states. [2020-12-09 05:01:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:39,935 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2020-12-09 05:01:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:39,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 05:01:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:39,937 INFO L225 Difference]: With dead ends: 37 [2020-12-09 05:01:39,937 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 05:01:39,937 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 05:01:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 05:01:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2020-12-09 05:01:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 34 transitions. [2020-12-09 05:01:39,941 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 34 transitions. Word has length 7 [2020-12-09 05:01:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:39,941 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 34 transitions. [2020-12-09 05:01:39,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2020-12-09 05:01:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:01:39,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:39,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:39,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:01:39,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:39,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1590262942, now seen corresponding path program 1 times [2020-12-09 05:01:39,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:39,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620217145] [2020-12-09 05:01:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:39,982 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 05:01:39,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620217145] [2020-12-09 05:01:39,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:39,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:39,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895063833] [2020-12-09 05:01:39,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:39,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:39,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:39,985 INFO L87 Difference]: Start difference. First operand 21 states and 34 transitions. Second operand 4 states. [2020-12-09 05:01:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:40,001 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2020-12-09 05:01:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:40,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 05:01:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:40,002 INFO L225 Difference]: With dead ends: 35 [2020-12-09 05:01:40,003 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 05:01:40,003 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 05:01:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 05:01:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2020-12-09 05:01:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-12-09 05:01:40,006 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 8 [2020-12-09 05:01:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:40,007 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-12-09 05:01:40,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-12-09 05:01:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:01:40,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:40,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:40,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:01:40,008 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2053296268, now seen corresponding path program 1 times [2020-12-09 05:01:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:40,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230205636] [2020-12-09 05:01:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:40,044 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 05:01:40,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230205636] [2020-12-09 05:01:40,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:40,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:40,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382840719] [2020-12-09 05:01:40,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:40,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:40,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:40,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:40,047 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 4 states. [2020-12-09 05:01:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:40,060 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-09 05:01:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:40,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:01:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:40,061 INFO L225 Difference]: With dead ends: 33 [2020-12-09 05:01:40,061 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 05:01:40,062 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 05:01:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 05:01:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2020-12-09 05:01:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-12-09 05:01:40,064 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 9 [2020-12-09 05:01:40,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:40,065 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-12-09 05:01:40,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-12-09 05:01:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:01:40,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:40,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:40,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:01:40,065 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:40,066 INFO L82 PathProgramCache]: Analyzing trace with hash 772540151, now seen corresponding path program 1 times [2020-12-09 05:01:40,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:40,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281454026] [2020-12-09 05:01:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:40,100 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 05:01:40,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281454026] [2020-12-09 05:01:40,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:40,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595530652] [2020-12-09 05:01:40,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:40,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:40,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:40,102 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand 4 states. [2020-12-09 05:01:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:40,115 INFO L93 Difference]: Finished difference Result 31 states and 46 transitions. [2020-12-09 05:01:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:40,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 05:01:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:40,116 INFO L225 Difference]: With dead ends: 31 [2020-12-09 05:01:40,116 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 05:01:40,116 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 05:01:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 05:01:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-12-09 05:01:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-12-09 05:01:40,119 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-12-09 05:01:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:40,119 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-12-09 05:01:40,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-12-09 05:01:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:01:40,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:40,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:40,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:01:40,121 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:40,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1820843735, now seen corresponding path program 1 times [2020-12-09 05:01:40,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:40,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506453929] [2020-12-09 05:01:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:40,157 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 05:01:40,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506453929] [2020-12-09 05:01:40,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:40,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:40,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203251119] [2020-12-09 05:01:40,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:40,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:40,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:40,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:40,160 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2020-12-09 05:01:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:40,173 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2020-12-09 05:01:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:40,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:01:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:40,174 INFO L225 Difference]: With dead ends: 29 [2020-12-09 05:01:40,174 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 05:01:40,175 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 05:01:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 05:01:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-12-09 05:01:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-12-09 05:01:40,177 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2020-12-09 05:01:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:40,178 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-12-09 05:01:40,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2020-12-09 05:01:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:01:40,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:40,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:40,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:01:40,179 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash -611365236, now seen corresponding path program 1 times [2020-12-09 05:01:40,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:40,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009993575] [2020-12-09 05:01:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:40,210 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 05:01:40,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009993575] [2020-12-09 05:01:40,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:40,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:40,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817843572] [2020-12-09 05:01:40,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:40,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:40,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:40,212 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2020-12-09 05:01:40,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:40,224 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2020-12-09 05:01:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:40,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 05:01:40,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:40,225 INFO L225 Difference]: With dead ends: 27 [2020-12-09 05:01:40,225 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 05:01:40,226 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 05:01:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 05:01:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-12-09 05:01:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:01:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2020-12-09 05:01:40,228 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2020-12-09 05:01:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:40,229 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-12-09 05:01:40,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2020-12-09 05:01:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:01:40,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:40,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:40,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:01:40,230 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 05:01:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:40,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1772237090, now seen corresponding path program 1 times [2020-12-09 05:01:40,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:40,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199537121] [2020-12-09 05:01:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:40,258 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 05:01:40,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199537121] [2020-12-09 05:01:40,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:40,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:01:40,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767260664] [2020-12-09 05:01:40,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:40,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:40,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:40,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:40,260 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 4 states. [2020-12-09 05:01:40,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:40,272 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-12-09 05:01:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:01:40,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 05:01:40,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:40,273 INFO L225 Difference]: With dead ends: 21 [2020-12-09 05:01:40,273 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:01:40,273 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 05:01:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:01:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:01:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:01:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:01:40,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 05:01:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:40,274 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:01:40,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:01:40,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:01:40,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 05:01:40,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:01:40 BoogieIcfgContainer [2020-12-09 05:01:40,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:01:40,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:01:40,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:01:40,279 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:01:40,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:01:39" (3/4) ... [2020-12-09 05:01:40,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:01:40,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 05:01:40,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 05:01:40,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:01:40,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:01:40,335 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a611e5ab-3cdf-4227-9b61-08a9ef54499c/bin/utaipan/witness.graphml [2020-12-09 05:01:40,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:01:40,337 INFO L168 Benchmark]: Toolchain (without parser) took 1443.92 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 62.6 MB in the beginning and 53.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:01:40,337 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 69.2 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:01:40,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.53 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 52.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:01:40,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.83 ms. Allocated memory is still 83.9 MB. Free memory was 52.1 MB in the beginning and 50.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:01:40,338 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 ms. Allocated memory is still 83.9 MB. Free memory was 50.5 MB in the beginning and 49.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:01:40,339 INFO L168 Benchmark]: RCFGBuilder took 378.33 ms. Allocated memory is still 83.9 MB. Free memory was 49.1 MB in the beginning and 38.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:01:40,339 INFO L168 Benchmark]: TraceAbstraction took 799.25 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 57.8 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:01:40,339 INFO L168 Benchmark]: Witness Printer took 56.59 ms. Allocated memory is still 100.7 MB. Free memory was 57.8 MB in the beginning and 53.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:01:40,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 69.2 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.53 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 52.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.83 ms. Allocated memory is still 83.9 MB. Free memory was 52.1 MB in the beginning and 50.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.89 ms. Allocated memory is still 83.9 MB. Free memory was 50.5 MB in the beginning and 49.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 378.33 ms. Allocated memory is still 83.9 MB. Free memory was 49.1 MB in the beginning and 38.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 799.25 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 57.8 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.59 ms. Allocated memory is still 100.7 MB. Free memory was 57.8 MB in the beginning and 53.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 135]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 313 SDtfs, 233 SDslu, 338 SDs, 0 SdLazy, 72 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...