./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.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_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI --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 87d55100d8515cc1c8c9aa61ce99443e0eafb474 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:32,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:32,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:32,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:32,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:32,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:32,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:32,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:32,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:32,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:32,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:32,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:32,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:32,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:32,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:32,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:32,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:32,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:32,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:32,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:32,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:32,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:32,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:32,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:32,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:32,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:32,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:32,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:32,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:32,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:32,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:32,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:32,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:32,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:32,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:32,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:32,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:32,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:32,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:32,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:32,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:32,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:27:32,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:32,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:32,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:32,227 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:32,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:32,228 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:32,228 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:32,228 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:32,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:32,229 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:32,230 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:32,230 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:32,231 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:32,231 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:32,231 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:32,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:27:32,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:27:32,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:32,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:32,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:32,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:32,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:32,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:32,234 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:27:32,235 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:27:32,235 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:27:32,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:32,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:32,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:32,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:32,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:32,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:32,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:32,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:32,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:32,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:32,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:32,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:32,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:32,241 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_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87d55100d8515cc1c8c9aa61ce99443e0eafb474 [2021-10-11 02:27:32,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:32,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:32,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:32,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:32,583 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:32,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_15-2.c [2021-10-11 02:27:32,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/data/fb5084086/b9127fcb065b4c70ba28206dc11e6d81/FLAG433078db3 [2021-10-11 02:27:33,248 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:33,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/sv-benchmarks/c/locks/test_locks_15-2.c [2021-10-11 02:27:33,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/data/fb5084086/b9127fcb065b4c70ba28206dc11e6d81/FLAG433078db3 [2021-10-11 02:27:33,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/data/fb5084086/b9127fcb065b4c70ba28206dc11e6d81 [2021-10-11 02:27:33,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:33,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:33,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:33,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:33,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:33,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f828329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33, skipping insertion in model container [2021-10-11 02:27:33,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:33,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:33,976 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-10-11 02:27:33,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:33,998 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:34,044 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-10-11 02:27:34,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:34,079 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:34,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34 WrapperNode [2021-10-11 02:27:34,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:34,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:34,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:34,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:34,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:34,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:34,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:34,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:34,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:34,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:34,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:34,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:34,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:34,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:34,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:35,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:35,199 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:27:35,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:35 BoogieIcfgContainer [2021-10-11 02:27:35,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:35,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:35,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:35,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:35,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:33" (1/3) ... [2021-10-11 02:27:35,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62644944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:35, skipping insertion in model container [2021-10-11 02:27:35,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (2/3) ... [2021-10-11 02:27:35,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62644944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:35, skipping insertion in model container [2021-10-11 02:27:35,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:35" (3/3) ... [2021-10-11 02:27:35,216 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2021-10-11 02:27:35,233 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:35,238 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:27:35,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:27:35,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:35,292 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:27:35,293 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:35,293 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:35,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:35,293 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:35,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:35,294 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-10-11 02:27:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:27:35,321 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:35,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:27:35,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash 9647635, now seen corresponding path program 1 times [2021-10-11 02:27:35,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:35,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261185204] [2021-10-11 02:27:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:35,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261185204] [2021-10-11 02:27:35,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:35,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:35,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200316616] [2021-10-11 02:27:35,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:35,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:35,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:35,585 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2021-10-11 02:27:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:35,599 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2021-10-11 02:27:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:35,601 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:27:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:35,612 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:27:35,613 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 02:27:35,614 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 [2021-10-11 02:27:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 02:27:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-11 02:27:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-10-11 02:27:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions. [2021-10-11 02:27:35,656 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 4 [2021-10-11 02:27:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:35,657 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions. [2021-10-11 02:27:35,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions. [2021-10-11 02:27:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:35,658 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:35,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:35,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:35,658 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:35,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash 290335554, now seen corresponding path program 1 times [2021-10-11 02:27:35,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:35,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063548286] [2021-10-11 02:27:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:35,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063548286] [2021-10-11 02:27:35,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:35,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:35,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748751717] [2021-10-11 02:27:35,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:35,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:35,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:35,738 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand 3 states. [2021-10-11 02:27:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:35,748 INFO L93 Difference]: Finished difference Result 37 states and 66 transitions. [2021-10-11 02:27:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:35,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:35,752 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:27:35,753 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:27:35,754 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 [2021-10-11 02:27:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:27:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-11 02:27:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2021-10-11 02:27:35,773 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 5 [2021-10-11 02:27:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:35,775 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2021-10-11 02:27:35,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2021-10-11 02:27:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:35,776 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:35,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:35,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:35,778 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:35,779 INFO L82 PathProgramCache]: Analyzing trace with hash 419270216, now seen corresponding path program 1 times [2021-10-11 02:27:35,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:35,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781274957] [2021-10-11 02:27:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:35,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781274957] [2021-10-11 02:27:35,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:35,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:35,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64256099] [2021-10-11 02:27:35,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:35,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:35,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:35,945 INFO L87 Difference]: Start difference. First operand 35 states and 64 transitions. Second operand 4 states. [2021-10-11 02:27:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,009 INFO L93 Difference]: Finished difference Result 67 states and 122 transitions. [2021-10-11 02:27:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:27:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,012 INFO L225 Difference]: With dead ends: 67 [2021-10-11 02:27:36,012 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 02:27:36,012 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 [2021-10-11 02:27:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 02:27:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 35. [2021-10-11 02:27:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 63 transitions. [2021-10-11 02:27:36,020 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 63 transitions. Word has length 6 [2021-10-11 02:27:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,021 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 63 transitions. [2021-10-11 02:27:36,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 63 transitions. [2021-10-11 02:27:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:36,022 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:36,022 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,023 INFO L82 PathProgramCache]: Analyzing trace with hash 112686536, now seen corresponding path program 1 times [2021-10-11 02:27:36,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65069993] [2021-10-11 02:27:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65069993] [2021-10-11 02:27:36,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316465064] [2021-10-11 02:27:36,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,152 INFO L87 Difference]: Start difference. First operand 35 states and 63 transitions. Second operand 4 states. [2021-10-11 02:27:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,176 INFO L93 Difference]: Finished difference Result 65 states and 117 transitions. [2021-10-11 02:27:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:27:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,178 INFO L225 Difference]: With dead ends: 65 [2021-10-11 02:27:36,178 INFO L226 Difference]: Without dead ends: 65 [2021-10-11 02:27:36,178 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 [2021-10-11 02:27:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-11 02:27:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 35. [2021-10-11 02:27:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2021-10-11 02:27:36,184 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 7 [2021-10-11 02:27:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,184 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2021-10-11 02:27:36,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2021-10-11 02:27:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:36,185 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:36,185 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,186 INFO L82 PathProgramCache]: Analyzing trace with hash -801472611, now seen corresponding path program 1 times [2021-10-11 02:27:36,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173241325] [2021-10-11 02:27:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173241325] [2021-10-11 02:27:36,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377483765] [2021-10-11 02:27:36,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,269 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand 4 states. [2021-10-11 02:27:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,291 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2021-10-11 02:27:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:27:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,293 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:27:36,296 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:27:36,297 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 [2021-10-11 02:27:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:27:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2021-10-11 02:27:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2021-10-11 02:27:36,305 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 8 [2021-10-11 02:27:36,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,305 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2021-10-11 02:27:36,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2021-10-11 02:27:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:36,308 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:36,309 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash 924365245, now seen corresponding path program 1 times [2021-10-11 02:27:36,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137142528] [2021-10-11 02:27:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137142528] [2021-10-11 02:27:36,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039551736] [2021-10-11 02:27:36,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,399 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2021-10-11 02:27:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,433 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2021-10-11 02:27:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:27:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,437 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:27:36,437 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:27:36,438 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 [2021-10-11 02:27:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:27:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2021-10-11 02:27:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2021-10-11 02:27:36,453 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 9 [2021-10-11 02:27:36,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,455 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2021-10-11 02:27:36,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2021-10-11 02:27:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:36,458 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:27:36,458 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1409235726, now seen corresponding path program 1 times [2021-10-11 02:27:36,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940070008] [2021-10-11 02:27:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940070008] [2021-10-11 02:27:36,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607621616] [2021-10-11 02:27:36,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,502 INFO L87 Difference]: Start difference. First operand 35 states and 60 transitions. Second operand 4 states. [2021-10-11 02:27:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,521 INFO L93 Difference]: Finished difference Result 59 states and 102 transitions. [2021-10-11 02:27:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:27:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,525 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:27:36,525 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 02:27:36,526 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 [2021-10-11 02:27:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 02:27:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-10-11 02:27:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 59 transitions. [2021-10-11 02:27:36,529 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 59 transitions. Word has length 10 [2021-10-11 02:27:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,529 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 59 transitions. [2021-10-11 02:27:36,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2021-10-11 02:27:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:36,530 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:27:36,531 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,531 INFO L82 PathProgramCache]: Analyzing trace with hash -736421454, now seen corresponding path program 1 times [2021-10-11 02:27:36,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041239432] [2021-10-11 02:27:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041239432] [2021-10-11 02:27:36,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394221077] [2021-10-11 02:27:36,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,574 INFO L87 Difference]: Start difference. First operand 35 states and 59 transitions. Second operand 4 states. [2021-10-11 02:27:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,592 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions. [2021-10-11 02:27:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:27:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,594 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:27:36,594 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:27:36,594 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 [2021-10-11 02:27:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:27:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2021-10-11 02:27:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2021-10-11 02:27:36,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 11 [2021-10-11 02:27:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,598 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2021-10-11 02:27:36,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2021-10-11 02:27:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:36,598 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:27:36,599 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1354015161, now seen corresponding path program 1 times [2021-10-11 02:27:36,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362591475] [2021-10-11 02:27:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362591475] [2021-10-11 02:27:36,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918648557] [2021-10-11 02:27:36,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,642 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand 4 states. [2021-10-11 02:27:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,662 INFO L93 Difference]: Finished difference Result 55 states and 92 transitions. [2021-10-11 02:27:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:27:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,663 INFO L225 Difference]: With dead ends: 55 [2021-10-11 02:27:36,663 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 02:27:36,663 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 [2021-10-11 02:27:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 02:27:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2021-10-11 02:27:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 57 transitions. [2021-10-11 02:27:36,667 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 57 transitions. Word has length 12 [2021-10-11 02:27:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,667 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 57 transitions. [2021-10-11 02:27:36,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 57 transitions. [2021-10-11 02:27:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:36,668 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:27:36,668 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,669 INFO L82 PathProgramCache]: Analyzing trace with hash 975416743, now seen corresponding path program 1 times [2021-10-11 02:27:36,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647866690] [2021-10-11 02:27:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647866690] [2021-10-11 02:27:36,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997302372] [2021-10-11 02:27:36,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,727 INFO L87 Difference]: Start difference. First operand 35 states and 57 transitions. Second operand 4 states. [2021-10-11 02:27:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,754 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2021-10-11 02:27:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:27:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,756 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:27:36,756 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:27:36,757 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 [2021-10-11 02:27:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:27:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2021-10-11 02:27:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2021-10-11 02:27:36,761 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 13 [2021-10-11 02:27:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,761 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2021-10-11 02:27:36,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2021-10-11 02:27:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:27:36,762 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:27:36,763 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash 173362076, now seen corresponding path program 1 times [2021-10-11 02:27:36,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109437761] [2021-10-11 02:27:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109437761] [2021-10-11 02:27:36,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434970051] [2021-10-11 02:27:36,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,818 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2021-10-11 02:27:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,842 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2021-10-11 02:27:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 02:27:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,844 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:27:36,844 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:27:36,845 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 [2021-10-11 02:27:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:27:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2021-10-11 02:27:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 55 transitions. [2021-10-11 02:27:36,849 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 55 transitions. Word has length 14 [2021-10-11 02:27:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,849 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 55 transitions. [2021-10-11 02:27:36,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 55 transitions. [2021-10-11 02:27:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:36,850 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:27:36,851 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1079471516, now seen corresponding path program 1 times [2021-10-11 02:27:36,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902535502] [2021-10-11 02:27:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902535502] [2021-10-11 02:27:36,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287503967] [2021-10-11 02:27:36,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,904 INFO L87 Difference]: Start difference. First operand 35 states and 55 transitions. Second operand 4 states. [2021-10-11 02:27:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,927 INFO L93 Difference]: Finished difference Result 49 states and 77 transitions. [2021-10-11 02:27:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:36,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:27:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,928 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:27:36,928 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:27:36,929 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 [2021-10-11 02:27:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:27:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2021-10-11 02:27:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2021-10-11 02:27:36,933 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 15 [2021-10-11 02:27:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,933 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2021-10-11 02:27:36,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2021-10-11 02:27:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:27:36,935 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:27:36,935 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,936 INFO L82 PathProgramCache]: Analyzing trace with hash -895906575, now seen corresponding path program 1 times [2021-10-11 02:27:36,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422523909] [2021-10-11 02:27:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:36,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422523909] [2021-10-11 02:27:36,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:36,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952838482] [2021-10-11 02:27:36,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:36,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:36,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:36,985 INFO L87 Difference]: Start difference. First operand 35 states and 54 transitions. Second operand 4 states. [2021-10-11 02:27:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,007 INFO L93 Difference]: Finished difference Result 47 states and 72 transitions. [2021-10-11 02:27:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:37,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:27:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,009 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:27:37,009 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:27:37,009 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 [2021-10-11 02:27:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:27:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-10-11 02:27:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-10-11 02:27:37,013 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 16 [2021-10-11 02:27:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,013 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-11 02:27:37,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2021-10-11 02:27:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:27:37,015 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:37,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:27:37,015 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2003084911, now seen corresponding path program 1 times [2021-10-11 02:27:37,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938439016] [2021-10-11 02:27:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:37,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938439016] [2021-10-11 02:27:37,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:37,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:37,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14290581] [2021-10-11 02:27:37,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:37,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:37,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:37,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:37,083 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand 4 states. [2021-10-11 02:27:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,104 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2021-10-11 02:27:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:37,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:27:37,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,107 INFO L225 Difference]: With dead ends: 45 [2021-10-11 02:27:37,108 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:27:37,109 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 [2021-10-11 02:27:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:27:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-10-11 02:27:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2021-10-11 02:27:37,115 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 17 [2021-10-11 02:27:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,115 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2021-10-11 02:27:37,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2021-10-11 02:27:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:27:37,117 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:37,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:27:37,117 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1965874618, now seen corresponding path program 1 times [2021-10-11 02:27:37,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30965941] [2021-10-11 02:27:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:37,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30965941] [2021-10-11 02:27:37,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:37,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:37,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232911772] [2021-10-11 02:27:37,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:37,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:37,193 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand 4 states. [2021-10-11 02:27:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,216 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2021-10-11 02:27:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:37,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 02:27:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,217 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:27:37,218 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:27:37,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:27:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2021-10-11 02:27:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2021-10-11 02:27:37,237 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 18 [2021-10-11 02:27:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,237 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2021-10-11 02:27:37,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:37,238 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2021-10-11 02:27:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:27:37,239 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:37,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:27:37,239 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash -812355194, now seen corresponding path program 1 times [2021-10-11 02:27:37,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377379230] [2021-10-11 02:27:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:37,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377379230] [2021-10-11 02:27:37,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:37,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:37,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219639949] [2021-10-11 02:27:37,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:37,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:37,310 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand 4 states. [2021-10-11 02:27:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,331 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2021-10-11 02:27:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:37,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 02:27:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,333 INFO L225 Difference]: With dead ends: 41 [2021-10-11 02:27:37,333 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:27:37,333 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 [2021-10-11 02:27:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:27:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-10-11 02:27:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:27:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2021-10-11 02:27:37,336 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 19 [2021-10-11 02:27:37,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,337 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2021-10-11 02:27:37,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-10-11 02:27:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:27:37,340 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:37,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:27:37,342 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:27:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash 587008923, now seen corresponding path program 1 times [2021-10-11 02:27:37,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122115228] [2021-10-11 02:27:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:37,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122115228] [2021-10-11 02:27:37,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:37,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:37,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562653136] [2021-10-11 02:27:37,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:37,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:37,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:37,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:37,454 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 4 states. [2021-10-11 02:27:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,477 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-10-11 02:27:37,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:37,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 02:27:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,479 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:27:37,479 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:37,480 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 [2021-10-11 02:27:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:37,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-11 02:27:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,482 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:37,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:37,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:37,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:27:37,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:37 BoogieIcfgContainer [2021-10-11 02:27:37,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:37,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:37,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:37,490 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:37,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:35" (3/4) ... [2021-10-11 02:27:37,494 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:37,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:27:37,518 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:27:37,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:37,520 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:37,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12b045a-e52f-461b-8eaa-8e2334b12f6f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:37,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:37,626 INFO L168 Benchmark]: Toolchain (without parser) took 4011.73 ms. Allocated memory was 109.1 MB in the beginning and 190.8 MB in the end (delta: 81.8 MB). Free memory was 79.2 MB in the beginning and 153.8 MB in the end (delta: -74.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:37,626 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 109.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:37,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.31 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 79.0 MB in the beginning and 125.0 MB in the end (delta: -46.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:37,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.55 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 122.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:37,628 INFO L168 Benchmark]: Boogie Preprocessor took 40.02 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 121.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:37,629 INFO L168 Benchmark]: RCFGBuilder took 1007.18 ms. Allocated memory is still 151.0 MB. Free memory was 121.4 MB in the beginning and 107.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:37,629 INFO L168 Benchmark]: TraceAbstraction took 2281.96 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 106.8 MB in the beginning and 158.0 MB in the end (delta: -51.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:37,630 INFO L168 Benchmark]: Witness Printer took 134.69 ms. Allocated memory is still 190.8 MB. Free memory was 158.0 MB in the beginning and 153.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:37,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 109.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 464.31 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 79.0 MB in the beginning and 125.0 MB in the end (delta: -46.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.55 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 122.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.02 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 121.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1007.18 ms. Allocated memory is still 151.0 MB. Free memory was 121.4 MB in the beginning and 107.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2281.96 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 106.8 MB in the beginning and 158.0 MB in the end (delta: -51.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 134.69 ms. Allocated memory is still 190.8 MB. Free memory was 158.0 MB in the beginning and 153.8 MB in the end (delta: 4.2 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: 233]: 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, 39 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 943 SDtfs, 751 SDslu, 1213 SDs, 0 SdLazy, 135 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 266 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 13177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...