./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a93221bc263791497331acd2a7a0150037c621aa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:24:56,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:24:56,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:24:56,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:24:56,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:24:56,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:24:56,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:24:56,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:24:56,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:24:56,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:24:56,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:24:56,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:24:56,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:24:56,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:24:56,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:24:56,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:24:56,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:24:56,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:24:56,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:24:56,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:24:56,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:24:56,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:24:56,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:24:56,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:24:56,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:24:56,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:24:56,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:24:56,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:24:56,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:24:56,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:24:56,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:24:56,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:24:56,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:24:56,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:24:56,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:24:56,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:24:56,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:24:56,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:24:56,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:24:56,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:24:56,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:24:56,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 20:24:56,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:24:56,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:24:56,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:24:56,413 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:24:56,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:24:56,413 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:24:56,414 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:24:56,414 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:24:56,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 20:24:56,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 20:24:56,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:24:56,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:24:56,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:24:56,416 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:24:56,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:24:56,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:24:56,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:24:56,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:24:56,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:24:56,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:24:56,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:24:56,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:24:56,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:24:56,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:24:56,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:24:56,418 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93221bc263791497331acd2a7a0150037c621aa [2020-12-09 20:24:56,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:24:56,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:24:56,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:24:56,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:24:56,608 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:24:56,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_11.c [2020-12-09 20:24:56,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/data/017925afc/7bff63d021c24d83aa8cd0f7651304bd/FLAGed12af43e [2020-12-09 20:24:57,004 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:24:57,004 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/sv-benchmarks/c/locks/test_locks_11.c [2020-12-09 20:24:57,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/data/017925afc/7bff63d021c24d83aa8cd0f7651304bd/FLAGed12af43e [2020-12-09 20:24:57,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/data/017925afc/7bff63d021c24d83aa8cd0f7651304bd [2020-12-09 20:24:57,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:24:57,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:24:57,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:24:57,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:24:57,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:24:57,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3825e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57, skipping insertion in model container [2020-12-09 20:24:57,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:24:57,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:24:57,156 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2020-12-09 20:24:57,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:24:57,165 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:24:57,182 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2020-12-09 20:24:57,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:24:57,192 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:24:57,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57 WrapperNode [2020-12-09 20:24:57,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:24:57,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:24:57,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:24:57,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:24:57,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:24:57,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:24:57,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:24:57,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:24:57,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... [2020-12-09 20:24:57,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:24:57,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:24:57,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:24:57,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:24:57,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:24:57,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:24:57,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:24:57,675 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 20:24:57,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:24:57 BoogieIcfgContainer [2020-12-09 20:24:57,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:24:57,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:24:57,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:24:57,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:24:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:24:57" (1/3) ... [2020-12-09 20:24:57,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7f4bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:24:57, skipping insertion in model container [2020-12-09 20:24:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:24:57" (2/3) ... [2020-12-09 20:24:57,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7f4bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:24:57, skipping insertion in model container [2020-12-09 20:24:57,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:24:57" (3/3) ... [2020-12-09 20:24:57,683 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-12-09 20:24:57,698 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:24:57,700 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 20:24:57,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 20:24:57,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:24:57,722 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 20:24:57,722 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:24:57,722 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:24:57,722 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:24:57,722 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:24:57,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:24:57,723 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:24:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-09 20:24:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 20:24:57,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:57,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 20:24:57,737 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash 7552401, now seen corresponding path program 1 times [2020-12-09 20:24:57,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:57,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011252500] [2020-12-09 20:24:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:57,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011252500] [2020-12-09 20:24:57,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:57,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:24:57,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608368869] [2020-12-09 20:24:57,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 20:24:57,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:57,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 20:24:57,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:24:57,871 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-12-09 20:24:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:57,880 INFO L93 Difference]: Finished difference Result 31 states and 52 transitions. [2020-12-09 20:24:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 20:24:57,881 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-09 20:24:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:57,887 INFO L225 Difference]: With dead ends: 31 [2020-12-09 20:24:57,888 INFO L226 Difference]: Without dead ends: 30 [2020-12-09 20:24:57,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:24:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-09 20:24:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-09 20:24:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 20:24:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 51 transitions. [2020-12-09 20:24:57,912 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 51 transitions. Word has length 4 [2020-12-09 20:24:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:57,912 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 51 transitions. [2020-12-09 20:24:57,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 20:24:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 51 transitions. [2020-12-09 20:24:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 20:24:57,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:57,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 20:24:57,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:24:57,913 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:57,914 INFO L82 PathProgramCache]: Analyzing trace with hash 227533950, now seen corresponding path program 1 times [2020-12-09 20:24:57,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:57,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127028078] [2020-12-09 20:24:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:57,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127028078] [2020-12-09 20:24:57,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:57,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 20:24:57,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963507828] [2020-12-09 20:24:57,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:24:57,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:24:57,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:24:57,950 INFO L87 Difference]: Start difference. First operand 30 states and 51 transitions. Second operand 3 states. [2020-12-09 20:24:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:57,954 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2020-12-09 20:24:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:24:57,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 20:24:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:57,955 INFO L225 Difference]: With dead ends: 29 [2020-12-09 20:24:57,955 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 20:24:57,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:24:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 20:24:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 20:24:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 48 transitions. [2020-12-09 20:24:57,958 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 48 transitions. Word has length 5 [2020-12-09 20:24:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:57,959 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 48 transitions. [2020-12-09 20:24:57,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:24:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 48 transitions. [2020-12-09 20:24:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 20:24:57,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:57,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 20:24:57,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:24:57,960 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1529800044, now seen corresponding path program 1 times [2020-12-09 20:24:57,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:57,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618416285] [2020-12-09 20:24:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618416285] [2020-12-09 20:24:58,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920700746] [2020-12-09 20:24:58,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,004 INFO L87 Difference]: Start difference. First operand 27 states and 48 transitions. Second operand 4 states. [2020-12-09 20:24:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,023 INFO L93 Difference]: Finished difference Result 51 states and 90 transitions. [2020-12-09 20:24:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 20:24:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,025 INFO L225 Difference]: With dead ends: 51 [2020-12-09 20:24:58,025 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 20:24:58,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 20:24:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 27. [2020-12-09 20:24:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2020-12-09 20:24:58,029 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2020-12-09 20:24:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,029 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2020-12-09 20:24:58,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2020-12-09 20:24:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 20:24:58,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 20:24:58,030 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash -178948084, now seen corresponding path program 1 times [2020-12-09 20:24:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996223576] [2020-12-09 20:24:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996223576] [2020-12-09 20:24:58,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324902552] [2020-12-09 20:24:58,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,066 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand 4 states. [2020-12-09 20:24:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,087 INFO L93 Difference]: Finished difference Result 49 states and 85 transitions. [2020-12-09 20:24:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 20:24:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,088 INFO L225 Difference]: With dead ends: 49 [2020-12-09 20:24:58,088 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 20:24:58,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 20:24:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2020-12-09 20:24:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2020-12-09 20:24:58,092 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 7 [2020-12-09 20:24:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,092 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2020-12-09 20:24:58,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2020-12-09 20:24:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:24:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 20:24:58,093 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1252209943, now seen corresponding path program 1 times [2020-12-09 20:24:58,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593650011] [2020-12-09 20:24:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593650011] [2020-12-09 20:24:58,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071098515] [2020-12-09 20:24:58,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,129 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 4 states. [2020-12-09 20:24:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,144 INFO L93 Difference]: Finished difference Result 47 states and 80 transitions. [2020-12-09 20:24:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 20:24:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,145 INFO L225 Difference]: With dead ends: 47 [2020-12-09 20:24:58,145 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 20:24:58,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 20:24:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-12-09 20:24:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2020-12-09 20:24:58,149 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 8 [2020-12-09 20:24:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,149 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2020-12-09 20:24:58,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2020-12-09 20:24:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 20:24:58,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 20:24:58,150 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,151 INFO L82 PathProgramCache]: Analyzing trace with hash -163588863, now seen corresponding path program 1 times [2020-12-09 20:24:58,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413742976] [2020-12-09 20:24:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413742976] [2020-12-09 20:24:58,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959242011] [2020-12-09 20:24:58,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,184 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand 4 states. [2020-12-09 20:24:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,199 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2020-12-09 20:24:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 20:24:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,201 INFO L225 Difference]: With dead ends: 45 [2020-12-09 20:24:58,201 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 20:24:58,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 20:24:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2020-12-09 20:24:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2020-12-09 20:24:58,206 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 9 [2020-12-09 20:24:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,206 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2020-12-09 20:24:58,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2020-12-09 20:24:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 20:24:58,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 20:24:58,207 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash -776073410, now seen corresponding path program 1 times [2020-12-09 20:24:58,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363310922] [2020-12-09 20:24:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363310922] [2020-12-09 20:24:58,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826128695] [2020-12-09 20:24:58,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,246 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand 4 states. [2020-12-09 20:24:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,260 INFO L93 Difference]: Finished difference Result 43 states and 70 transitions. [2020-12-09 20:24:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 20:24:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,261 INFO L225 Difference]: With dead ends: 43 [2020-12-09 20:24:58,261 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 20:24:58,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 20:24:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2020-12-09 20:24:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 43 transitions. [2020-12-09 20:24:58,266 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 43 transitions. Word has length 10 [2020-12-09 20:24:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,266 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 43 transitions. [2020-12-09 20:24:58,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2020-12-09 20:24:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:24:58,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 20:24:58,267 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1711742454, now seen corresponding path program 1 times [2020-12-09 20:24:58,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927332816] [2020-12-09 20:24:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927332816] [2020-12-09 20:24:58,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182168545] [2020-12-09 20:24:58,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,301 INFO L87 Difference]: Start difference. First operand 27 states and 43 transitions. Second operand 4 states. [2020-12-09 20:24:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,313 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2020-12-09 20:24:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 20:24:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,314 INFO L225 Difference]: With dead ends: 41 [2020-12-09 20:24:58,314 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 20:24:58,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 20:24:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2020-12-09 20:24:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 42 transitions. [2020-12-09 20:24:58,317 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 42 transitions. Word has length 11 [2020-12-09 20:24:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,317 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 42 transitions. [2020-12-09 20:24:58,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 42 transitions. [2020-12-09 20:24:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:24:58,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 20:24:58,318 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1524623251, now seen corresponding path program 1 times [2020-12-09 20:24:58,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465600341] [2020-12-09 20:24:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465600341] [2020-12-09 20:24:58,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522717380] [2020-12-09 20:24:58,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,351 INFO L87 Difference]: Start difference. First operand 27 states and 42 transitions. Second operand 4 states. [2020-12-09 20:24:58,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,364 INFO L93 Difference]: Finished difference Result 39 states and 60 transitions. [2020-12-09 20:24:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 20:24:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,365 INFO L225 Difference]: With dead ends: 39 [2020-12-09 20:24:58,365 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 20:24:58,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 20:24:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2020-12-09 20:24:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2020-12-09 20:24:58,373 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 12 [2020-12-09 20:24:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,373 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2020-12-09 20:24:58,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2020-12-09 20:24:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:24:58,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 20:24:58,375 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,375 INFO L82 PathProgramCache]: Analyzing trace with hash 18895595, now seen corresponding path program 1 times [2020-12-09 20:24:58,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529652348] [2020-12-09 20:24:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529652348] [2020-12-09 20:24:58,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705146293] [2020-12-09 20:24:58,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,405 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand 4 states. [2020-12-09 20:24:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,418 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2020-12-09 20:24:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 20:24:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,419 INFO L225 Difference]: With dead ends: 37 [2020-12-09 20:24:58,419 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 20:24:58,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 20:24:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-12-09 20:24:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2020-12-09 20:24:58,422 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 13 [2020-12-09 20:24:58,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,422 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2020-12-09 20:24:58,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2020-12-09 20:24:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 20:24:58,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 20:24:58,424 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,424 INFO L82 PathProgramCache]: Analyzing trace with hash 585978856, now seen corresponding path program 1 times [2020-12-09 20:24:58,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837125818] [2020-12-09 20:24:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837125818] [2020-12-09 20:24:58,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285210704] [2020-12-09 20:24:58,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,453 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand 4 states. [2020-12-09 20:24:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,466 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-12-09 20:24:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 20:24:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,468 INFO L225 Difference]: With dead ends: 35 [2020-12-09 20:24:58,468 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 20:24:58,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 20:24:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2020-12-09 20:24:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2020-12-09 20:24:58,470 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 14 [2020-12-09 20:24:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,471 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2020-12-09 20:24:58,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2020-12-09 20:24:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:24:58,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 20:24:58,472 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,473 INFO L82 PathProgramCache]: Analyzing trace with hash 985691104, now seen corresponding path program 1 times [2020-12-09 20:24:58,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297156480] [2020-12-09 20:24:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297156480] [2020-12-09 20:24:58,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153298567] [2020-12-09 20:24:58,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,501 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 4 states. [2020-12-09 20:24:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,513 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-12-09 20:24:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 20:24:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,514 INFO L225 Difference]: With dead ends: 33 [2020-12-09 20:24:58,514 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 20:24:58,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 20:24:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-12-09 20:24:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 20:24:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2020-12-09 20:24:58,517 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 15 [2020-12-09 20:24:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,517 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2020-12-09 20:24:58,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2020-12-09 20:24:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 20:24:58,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:24:58,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:24:58,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 20:24:58,518 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 20:24:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:24:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash 491869245, now seen corresponding path program 1 times [2020-12-09 20:24:58,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:24:58,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455322429] [2020-12-09 20:24:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:24:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:24:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:24:58,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455322429] [2020-12-09 20:24:58,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:24:58,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:24:58,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232850230] [2020-12-09 20:24:58,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:24:58,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:24:58,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:24:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,546 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand 4 states. [2020-12-09 20:24:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:24:58,558 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-12-09 20:24:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:24:58,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 20:24:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:24:58,559 INFO L225 Difference]: With dead ends: 27 [2020-12-09 20:24:58,559 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:24:58,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:24:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:24:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:24:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:24:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:24:58,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 20:24:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:24:58,560 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:24:58,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:24:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:24:58,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:24:58,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 20:24:58,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:24:58 BoogieIcfgContainer [2020-12-09 20:24:58,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:24:58,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:24:58,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:24:58,564 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:24:58,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:24:57" (3/4) ... [2020-12-09 20:24:58,566 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:24:58,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-09 20:24:58,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 20:24:58,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 20:24:58,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:24:58,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d547daa-c0f7-4403-b3b2-dabc9b689af8/bin/utaipan/witness.graphml [2020-12-09 20:24:58,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:24:58,621 INFO L168 Benchmark]: Toolchain (without parser) took 1597.92 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 52.5 MB in the beginning and 55.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:24:58,621 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:24:58,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.54 ms. Allocated memory is still 92.3 MB. Free memory was 52.4 MB in the beginning and 65.9 MB in the end (delta: -13.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 20:24:58,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.39 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 64.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:24:58,622 INFO L168 Benchmark]: Boogie Preprocessor took 17.34 ms. Allocated memory is still 92.3 MB. Free memory was 64.1 MB in the beginning and 63.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:24:58,623 INFO L168 Benchmark]: RCFGBuilder took 438.78 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 39.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:24:58,623 INFO L168 Benchmark]: TraceAbstraction took 885.60 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 38.4 MB in the beginning and 59.5 MB in the end (delta: -21.1 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:24:58,623 INFO L168 Benchmark]: Witness Printer took 55.79 ms. Allocated memory is still 115.3 MB. Free memory was 58.6 MB in the beginning and 55.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:24:58,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 169.54 ms. Allocated memory is still 92.3 MB. Free memory was 52.4 MB in the beginning and 65.9 MB in the end (delta: -13.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.39 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 64.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.34 ms. Allocated memory is still 92.3 MB. Free memory was 64.1 MB in the beginning and 63.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 438.78 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 39.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 885.60 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 38.4 MB in the beginning and 59.5 MB in the end (delta: -21.1 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Witness Printer took 55.79 ms. Allocated memory is still 115.3 MB. Free memory was 58.6 MB in the beginning and 55.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 177]: 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, 31 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 541 SDtfs, 419 SDslu, 647 SDs, 0 SdLazy, 99 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 150 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...