./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_10.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_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/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 6423b7e5fbcc52c08e52aff49c79db620dd407c4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:42:43,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:42:43,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:42:43,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:42:43,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:42:43,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:42:43,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:42:43,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:42:43,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:42:43,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:42:43,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:42:43,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:42:43,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:42:43,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:42:43,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:42:43,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:42:43,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:42:43,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:42:43,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:42:43,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:42:43,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:42:43,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:42:43,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:42:43,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:42:43,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:42:43,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:42:43,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:42:43,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:42:43,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:42:43,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:42:43,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:42:43,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:42:43,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:42:43,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:42:43,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:42:43,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:42:43,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:42:43,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:42:43,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:42:43,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:42:43,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:42:43,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 19:42:43,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:42:43,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:42:43,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:42:43,328 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:42:43,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:42:43,328 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:42:43,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:42:43,328 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:42:43,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:42:43,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:42:43,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:42:43,329 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:42:43,329 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:42:43,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:42:43,329 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:42:43,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 19:42:43,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 19:42:43,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:42:43,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:42:43,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:42:43,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:42:43,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:42:43,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:42:43,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:42:43,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:42:43,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:42:43,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:42:43,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:42:43,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:42:43,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:42:43,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:42:43,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:42:43,333 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_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6423b7e5fbcc52c08e52aff49c79db620dd407c4 [2020-12-09 19:42:43,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:42:43,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:42:43,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:42:43,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:42:43,523 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:42:43,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_10.c [2020-12-09 19:42:43,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/data/b5d28e289/ed6ddf9a45b64dd1a3fbad464d5fd191/FLAG9c904db90 [2020-12-09 19:42:43,921 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:42:43,922 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/sv-benchmarks/c/locks/test_locks_10.c [2020-12-09 19:42:43,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/data/b5d28e289/ed6ddf9a45b64dd1a3fbad464d5fd191/FLAG9c904db90 [2020-12-09 19:42:43,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/data/b5d28e289/ed6ddf9a45b64dd1a3fbad464d5fd191 [2020-12-09 19:42:43,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:42:43,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:42:43,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:42:43,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:42:43,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:42:43,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:42:43" (1/1) ... [2020-12-09 19:42:43,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8336bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:43, skipping insertion in model container [2020-12-09 19:42:43,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:42:43" (1/1) ... [2020-12-09 19:42:43,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:42:43,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:42:44,083 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_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2020-12-09 19:42:44,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:42:44,096 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:42:44,118 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_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2020-12-09 19:42:44,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:42:44,132 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:42:44,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44 WrapperNode [2020-12-09 19:42:44,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:42:44,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:42:44,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:42:44,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:42:44,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:42:44,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:42:44,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:42:44,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:42:44,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... [2020-12-09 19:42:44,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:42:44,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:42:44,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:42:44,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:42:44,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/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 19:42:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:42:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:42:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:42:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:42:44,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:42:44,623 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 19:42:44,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:42:44 BoogieIcfgContainer [2020-12-09 19:42:44,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:42:44,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:42:44,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:42:44,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:42:44,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:42:43" (1/3) ... [2020-12-09 19:42:44,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4f8181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:42:44, skipping insertion in model container [2020-12-09 19:42:44,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:44" (2/3) ... [2020-12-09 19:42:44,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4f8181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:42:44, skipping insertion in model container [2020-12-09 19:42:44,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:42:44" (3/3) ... [2020-12-09 19:42:44,633 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-12-09 19:42:44,646 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:42:44,649 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 19:42:44,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 19:42:44,680 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:42:44,680 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 19:42:44,681 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:42:44,681 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:42:44,681 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:42:44,681 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:42:44,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:42:44,681 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:42:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 19:42:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 19:42:44,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:44,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 19:42:44,701 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:44,706 INFO L82 PathProgramCache]: Analyzing trace with hash 7022346, now seen corresponding path program 1 times [2020-12-09 19:42:44,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:44,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032110817] [2020-12-09 19:42:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:44,838 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 19:42:44,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032110817] [2020-12-09 19:42:44,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:44,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:42:44,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574246381] [2020-12-09 19:42:44,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:42:44,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:44,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:42:44,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:42:44,855 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 19:42:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:44,865 INFO L93 Difference]: Finished difference Result 29 states and 48 transitions. [2020-12-09 19:42:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:42:44,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-09 19:42:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:44,872 INFO L225 Difference]: With dead ends: 29 [2020-12-09 19:42:44,872 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 19:42:44,873 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 19:42:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 19:42:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 19:42:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 19:42:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2020-12-09 19:42:44,896 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 4 [2020-12-09 19:42:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:44,896 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2020-12-09 19:42:44,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:42:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2020-12-09 19:42:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:42:44,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:44,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:42:44,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:42:44,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash 211833549, now seen corresponding path program 1 times [2020-12-09 19:42:44,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:44,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210999366] [2020-12-09 19:42:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:44,932 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 19:42:44,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210999366] [2020-12-09 19:42:44,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:44,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:42:44,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144253800] [2020-12-09 19:42:44,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:42:44,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:44,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:42:44,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:42:44,934 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2020-12-09 19:42:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:44,938 INFO L93 Difference]: Finished difference Result 27 states and 46 transitions. [2020-12-09 19:42:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:42:44,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 19:42:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:44,939 INFO L225 Difference]: With dead ends: 27 [2020-12-09 19:42:44,939 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 19:42:44,939 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 19:42:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 19:42:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-09 19:42:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 44 transitions. [2020-12-09 19:42:44,942 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 44 transitions. Word has length 5 [2020-12-09 19:42:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:44,943 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 44 transitions. [2020-12-09 19:42:44,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:42:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 44 transitions. [2020-12-09 19:42:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:42:44,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:44,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:42:44,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:42:44,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:44,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2017067609, now seen corresponding path program 1 times [2020-12-09 19:42:44,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:44,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631233308] [2020-12-09 19:42:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:44,987 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 19:42:44,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631233308] [2020-12-09 19:42:44,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:44,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:44,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885447222] [2020-12-09 19:42:44,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:44,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:44,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:44,989 INFO L87 Difference]: Start difference. First operand 25 states and 44 transitions. Second operand 4 states. [2020-12-09 19:42:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,009 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-12-09 19:42:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 19:42:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,011 INFO L225 Difference]: With dead ends: 47 [2020-12-09 19:42:45,011 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 19:42:45,011 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 19:42:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 19:42:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 25. [2020-12-09 19:42:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 43 transitions. [2020-12-09 19:42:45,014 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 43 transitions. Word has length 6 [2020-12-09 19:42:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,014 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 43 transitions. [2020-12-09 19:42:45,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 43 transitions. [2020-12-09 19:42:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 19:42:45,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:42:45,015 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1895626909, now seen corresponding path program 1 times [2020-12-09 19:42:45,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477776300] [2020-12-09 19:42:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,049 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 19:42:45,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477776300] [2020-12-09 19:42:45,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284819286] [2020-12-09 19:42:45,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,051 INFO L87 Difference]: Start difference. First operand 25 states and 43 transitions. Second operand 4 states. [2020-12-09 19:42:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,067 INFO L93 Difference]: Finished difference Result 45 states and 77 transitions. [2020-12-09 19:42:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 19:42:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,068 INFO L225 Difference]: With dead ends: 45 [2020-12-09 19:42:45,068 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 19:42:45,068 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 19:42:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 19:42:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 25. [2020-12-09 19:42:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 42 transitions. [2020-12-09 19:42:45,071 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 42 transitions. Word has length 7 [2020-12-09 19:42:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,071 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 42 transitions. [2020-12-09 19:42:45,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 42 transitions. [2020-12-09 19:42:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:42:45,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:42:45,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1364894276, now seen corresponding path program 1 times [2020-12-09 19:42:45,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406680517] [2020-12-09 19:42:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,105 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 19:42:45,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406680517] [2020-12-09 19:42:45,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407335493] [2020-12-09 19:42:45,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,107 INFO L87 Difference]: Start difference. First operand 25 states and 42 transitions. Second operand 4 states. [2020-12-09 19:42:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,121 INFO L93 Difference]: Finished difference Result 43 states and 72 transitions. [2020-12-09 19:42:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 19:42:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,122 INFO L225 Difference]: With dead ends: 43 [2020-12-09 19:42:45,122 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 19:42:45,122 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 19:42:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 19:42:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2020-12-09 19:42:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 41 transitions. [2020-12-09 19:42:45,125 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 41 transitions. Word has length 8 [2020-12-09 19:42:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,125 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 41 transitions. [2020-12-09 19:42:45,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 41 transitions. [2020-12-09 19:42:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:42:45,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 19:42:45,126 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,127 INFO L82 PathProgramCache]: Analyzing trace with hash 638164434, now seen corresponding path program 1 times [2020-12-09 19:42:45,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947013869] [2020-12-09 19:42:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,162 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 19:42:45,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947013869] [2020-12-09 19:42:45,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247276407] [2020-12-09 19:42:45,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,164 INFO L87 Difference]: Start difference. First operand 25 states and 41 transitions. Second operand 4 states. [2020-12-09 19:42:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,180 INFO L93 Difference]: Finished difference Result 41 states and 67 transitions. [2020-12-09 19:42:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 19:42:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,181 INFO L225 Difference]: With dead ends: 41 [2020-12-09 19:42:45,181 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 19:42:45,181 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 19:42:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 19:42:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2020-12-09 19:42:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 40 transitions. [2020-12-09 19:42:45,185 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 40 transitions. Word has length 9 [2020-12-09 19:42:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,185 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 40 transitions. [2020-12-09 19:42:45,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 40 transitions. [2020-12-09 19:42:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:42:45,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 19:42:45,187 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1691524655, now seen corresponding path program 1 times [2020-12-09 19:42:45,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362661942] [2020-12-09 19:42:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,223 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 19:42:45,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362661942] [2020-12-09 19:42:45,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144297470] [2020-12-09 19:42:45,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,225 INFO L87 Difference]: Start difference. First operand 25 states and 40 transitions. Second operand 4 states. [2020-12-09 19:42:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,239 INFO L93 Difference]: Finished difference Result 39 states and 62 transitions. [2020-12-09 19:42:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 19:42:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,240 INFO L225 Difference]: With dead ends: 39 [2020-12-09 19:42:45,240 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 19:42:45,241 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 19:42:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 19:42:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2020-12-09 19:42:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2020-12-09 19:42:45,244 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2020-12-09 19:42:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,245 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2020-12-09 19:42:45,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2020-12-09 19:42:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 19:42:45,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 19:42:45,246 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,246 INFO L82 PathProgramCache]: Analyzing trace with hash -897442041, now seen corresponding path program 1 times [2020-12-09 19:42:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528192102] [2020-12-09 19:42:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,280 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 19:42:45,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528192102] [2020-12-09 19:42:45,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711075171] [2020-12-09 19:42:45,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,282 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 4 states. [2020-12-09 19:42:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,297 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2020-12-09 19:42:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 19:42:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,298 INFO L225 Difference]: With dead ends: 37 [2020-12-09 19:42:45,298 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 19:42:45,298 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 19:42:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 19:42:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2020-12-09 19:42:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2020-12-09 19:42:45,302 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 38 transitions. Word has length 11 [2020-12-09 19:42:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,302 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 38 transitions. [2020-12-09 19:42:45,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 38 transitions. [2020-12-09 19:42:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 19:42:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 19:42:45,303 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2050684442, now seen corresponding path program 1 times [2020-12-09 19:42:45,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257527674] [2020-12-09 19:42:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,336 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 19:42:45,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257527674] [2020-12-09 19:42:45,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705346090] [2020-12-09 19:42:45,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,339 INFO L87 Difference]: Start difference. First operand 25 states and 38 transitions. Second operand 4 states. [2020-12-09 19:42:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,352 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2020-12-09 19:42:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 19:42:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,353 INFO L225 Difference]: With dead ends: 35 [2020-12-09 19:42:45,354 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 19:42:45,354 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 19:42:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 19:42:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2020-12-09 19:42:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 37 transitions. [2020-12-09 19:42:45,357 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 37 transitions. Word has length 12 [2020-12-09 19:42:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,357 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 37 transitions. [2020-12-09 19:42:45,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2020-12-09 19:42:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:42:45,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 19:42:45,359 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,360 INFO L82 PathProgramCache]: Analyzing trace with hash 853507132, now seen corresponding path program 1 times [2020-12-09 19:42:45,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463087324] [2020-12-09 19:42:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,390 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 19:42:45,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463087324] [2020-12-09 19:42:45,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113245093] [2020-12-09 19:42:45,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,392 INFO L87 Difference]: Start difference. First operand 25 states and 37 transitions. Second operand 4 states. [2020-12-09 19:42:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,403 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-12-09 19:42:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 19:42:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,403 INFO L225 Difference]: With dead ends: 33 [2020-12-09 19:42:45,403 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 19:42:45,404 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 19:42:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 19:42:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-12-09 19:42:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2020-12-09 19:42:45,406 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 36 transitions. Word has length 13 [2020-12-09 19:42:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,406 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 36 transitions. [2020-12-09 19:42:45,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-12-09 19:42:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 19:42:45,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 19:42:45,407 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,407 INFO L82 PathProgramCache]: Analyzing trace with hash 689133051, now seen corresponding path program 1 times [2020-12-09 19:42:45,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425361226] [2020-12-09 19:42:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,429 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 19:42:45,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425361226] [2020-12-09 19:42:45,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938572523] [2020-12-09 19:42:45,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,431 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand 4 states. [2020-12-09 19:42:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,446 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2020-12-09 19:42:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 19:42:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,448 INFO L225 Difference]: With dead ends: 31 [2020-12-09 19:42:45,448 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 19:42:45,448 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 19:42:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 19:42:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-12-09 19:42:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 19:42:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-12-09 19:42:45,451 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 14 [2020-12-09 19:42:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,451 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-12-09 19:42:45,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,451 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-12-09 19:42:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 19:42:45,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:42:45,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:42:45,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 19:42:45,452 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 19:42:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:42:45,453 INFO L82 PathProgramCache]: Analyzing trace with hash -111495823, now seen corresponding path program 1 times [2020-12-09 19:42:45,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:42:45,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409688277] [2020-12-09 19:42:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:42:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:42:45,482 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 19:42:45,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409688277] [2020-12-09 19:42:45,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:42:45,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:42:45,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480011781] [2020-12-09 19:42:45,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:42:45,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:42:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:42:45,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:42:45,484 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-12-09 19:42:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:42:45,496 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-12-09 19:42:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:42:45,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 19:42:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:42:45,497 INFO L225 Difference]: With dead ends: 25 [2020-12-09 19:42:45,497 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:42:45,497 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 19:42:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:42:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:42:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:42:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:42:45,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 19:42:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:42:45,498 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:42:45,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:42:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:42:45,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:42:45,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 19:42:45,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:42:45 BoogieIcfgContainer [2020-12-09 19:42:45,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:42:45,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:42:45,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:42:45,502 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:42:45,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:42:44" (3/4) ... [2020-12-09 19:42:45,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:42:45,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-09 19:42:45,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 19:42:45,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 19:42:45,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:42:45,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_686aaa22-477b-4a9b-a2ce-21d5ec09d55c/bin/utaipan/witness.graphml [2020-12-09 19:42:45,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:42:45,566 INFO L168 Benchmark]: Toolchain (without parser) took 1625.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,566 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 74.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:42:45,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.95 ms. Allocated memory is still 92.3 MB. Free memory was 58.6 MB in the beginning and 69.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.20 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,568 INFO L168 Benchmark]: Boogie Preprocessor took 23.58 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 66.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,568 INFO L168 Benchmark]: RCFGBuilder took 430.57 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 66.2 MB in the beginning and 85.7 MB in the end (delta: -19.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,568 INFO L168 Benchmark]: TraceAbstraction took 875.15 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 36.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,568 INFO L168 Benchmark]: Witness Printer took 62.65 ms. Allocated memory is still 111.1 MB. Free memory was 36.8 MB in the beginning and 88.1 MB in the end (delta: -51.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:42:45,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 74.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 192.95 ms. Allocated memory is still 92.3 MB. Free memory was 58.6 MB in the beginning and 69.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.20 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.58 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 66.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 430.57 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 66.2 MB in the beginning and 85.7 MB in the end (delta: -19.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 875.15 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 36.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. * Witness Printer took 62.65 ms. Allocated memory is still 111.1 MB. Free memory was 36.8 MB in the beginning and 88.1 MB in the end (delta: -51.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 163]: 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, 29 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 458 SDtfs, 351 SDslu, 533 SDs, 0 SdLazy, 90 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 12 MinimizatonAttempts, 126 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 4862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...